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Cisco ASR 901 Aggregation Services Router Command Reference Guide

OL-26031-07

Chapter 1 CLI Command Reference

show interfaces rep

Examples

This is sample output from the

show interface rep

command:

Switch #

show interface rep

Interface Seg-id

Type

LinkOp

Role

---------------------- ------ ------------ ----------- ----

GigabitEthernet 0/1

Primary Edge TWO_WAY

Open

GigabitEthernet

0/2

1 Edge

TWO_WAY Open

This is sample output from the

show interface rep

command when the edge port is configured to have

no REP neighbor. Note the asterisk (*) next to

Primary Edge

Router#

show interface rep

Interface Seg-id Type LinkOp Role

---------------------- ------ -------------- ----------- ----

GigabitEthernet0/1 2 TWO_WAY Open

GigabitEthernet0/2 2 Primary Edge* TWO_WAY Open

This is sample output from the

show interface rep

command when external neighbors are not

configured:

Switch #

show interface rep

Interface Seg-id

Type

LinkOp

Role

---------------------- ------ ------------ ----------- ----

GigabitEthernet0/1 1

NO_NEIGHBOR

FailNoNbr

GigabitEthernet0/2 2

NO_NEIGHBOR

FailLogOpen

This is sample output from the

show interface rep detail

command for a specified interface:

Switch #

show interface gigabitethernet0/2 rep detail

GigabitEthernet0/2 REP enabled

Segment-id: 1 (Segment)

PortID: 00030019E85BDD00

Preferred flag: No

Operational Link Status: INIT_DOWN

Current Key: 00000000000000000000

Port Role: Fail

Blocked VLAN: 1-4094

Admin-vlan: 1

Preempt Delay Timer: disabled

LSL Ageout Timer: 5000 ms

Configured Load-balancing Block Port: 1234567890123456

Configured Load-balancing Block VLAN: 1-4094

STCN Propagate to: none

LSL PDU rx: 0, tx: 0

HFL PDU rx: 0, tx: 0

BPA TLV rx: 0, tx: 0

BPA (STCN, LSL) TLV rx: 0, tx: 0

BPA (STCN, HFL) TLV rx: 0, tx: 0

EPA-ELECTION TLV rx: 0, tx: 0

EPA-COMMAND TLV rx: 0, tx: 0

EPA-INFO TLV rx: 0, tx: 0

Related Commands

Command

Description

repsegment

Enables REP on an interface and assigns a segment ID. This command is also
used to configure a port as an edge port, a primary edge port, or a preferred
port.

show reptopology

[

detail

]

Displays information about all ports in the segment, including which one was
configured and selected as the primary edge port.

Summary of Contents for 901

Page 1: ...stems Inc 170 West Tasman Drive San Jose CA 95134 1706 USA http www cisco com Tel 408 526 4000 800 553 NETS 6387 Fax 408 527 0883 Cisco ASR 901 Aggregation Services Router Command Reference July 30 2014 Text Part Number OL 26031 07 ...

Page 2: ...ITATION THOSE OF MERCHANTABILITY FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OR ARISING FROM A COURSE OF DEALING USAGE OR TRADE PRACTICE IN NO EVENT SHALL CISCO OR ITS SUPPLIERS BE LIABLE FOR ANY INDIRECT SPECIAL CONSEQUENTIAL OR INCIDENTAL DAMAGES INCLUDING WITHOUT LIMITATION LOST PROFITS OR LOSS OR DAMAGE TO DATA ARISING OUT OF THE USE OR INABILITY TO USE THIS MANUAL EVEN IF CISCO OR IT...

Page 3: ...ument Revision History v Objectives v Audience vi Conventions vi Related Documentation vii Obtaining Documentation and Submitting a Service Request vii Using Command Line Interface 1 1 Getting Help 1 1 How to Find Command Options 1 2 Understanding Command Modes 1 4 Using the No and Default Forms of Commands 1 5 Saving Configuration Changes 1 5 CLI Command Reference 1 1 ...

Page 4: ...Contents iv Cisco ASR 901 Series Aggregation Services Router Command Reference Guide OL 26031 07 ...

Page 5: ...g a Service Request page vii Document Revision History The Document Revision History table below records technical changes to this document Objectives This guide explains how to use the Command Line Interface on the Cisco ASR 901 Series Aggregation Services Router Document Number Date Change Summary OL 26031 01 October 25 2011 Initial release of the document OL 26031 02 August 16 2012 Updated the ...

Page 6: ...In this situation you might perform an action that could result in equipment damage or loss of data Convention Indication bold font Commands and keywords and user entered text appear in bold font italic font Document titles new or emphasized terms and arguments for which you supply values are in italic font Elements in square brackets are optional x y z Required alternative keywords are grouped in...

Page 7: ...ety Information for the Cisco ASR 901 Series Aggregation Services Router Release Notes for Cisco ASR 901 Series Aggregation Services Router for Cisco IOS Release Note To obtain the latest information access the online documentation Obtaining Documentation and Submitting a Service Request For information on obtaining documentation submitting a service request and gathering additional information se...

Page 8: ... viii Cisco ASR 901 Series Aggregation Services Router Command Reference Guide OL 26031 07 Chapter ...

Page 9: ...o obtain a list of commands that are available for each command mode enter a question mark at the system prompt You also can obtain a list of any command s associated keywords and arguments with the context sensitive help feature Table 1 1 lists commands you can enter to get help that is specific to a command mode a command a keyword or an argument Table 1 1 Getting Help Command Purpose abbreviate...

Page 10: ... the keywords For example if you are in global configuration mode and want to see all the keywords for the cem command you enter cem Table 1 2 shows examples of how you can use the question mark to assist you in entering commands and also guides you through entering the following command interface gigabitethernet 0 1 Table 1 2 How to Find Command Options Command Comment Router enable Password pass...

Page 11: ...olicy Apply policy propogated by bgp community string bridge group Transparent bridging interface parameters carrier delay Specify delay for interface transitions cdp CDP interface subcommands channel group Etherchannel port bundling configuration clns CLNS interface subcommands cmns OSI CMNS custom queue list Assign a custom queue list to an interface decnet Interface DECnet config commands defau...

Page 12: ...de where you can enter interface configuration mode subinterface configuration mode and a variety of protocol specific modes ROM monitor mode is a separate mode that is used when the Cisco ASR 901 series router cannot boot properly If your Cisco ASR 901 series router or access server does not find a valid system image when it is booting or if its configuration file is corrupted at startup the syst...

Page 13: ...s can have a default form The default form of a command returns the command setting to its default Most commands are disabled by default so the default form is the same as the no form However some commands are enabled by default and have arguments that are set to certain default values In these cases the default form of the command enables the command and sets arguments to their default values Thi...

Page 14: ...1 6 Cisco ASR 901 Aggregation Services Router Command Reference Guide OL 26031 07 Chapter 1 Using Command Line Interface Saving Configuration Changes ...

Page 15: ...ly support all of the commands listed in the 15 1S documentation asr901 ecmp hash config global type asr901 ecmp hash config ipv4 type asr901 ecmp hash config ipv6 type asr901 ecmp hash config mpls to ip asr901 multicast source asr901 platf frr enable asr901 platf multicast enable asr901 platf multi nni cfm bfd all interfaces bfd interval channel group interface channel protocol interface class po...

Page 16: ...e atm ima interface port channel interface range ip tos l3 over l2 flush buffers load interval mac flap ctrl match ip dscp match vlan mtu name negotiation network clock clear switch network clock eec network clock external hold off network clock hold off global network clock hold off network clock input source network clock input source controller network clock output source system network clock q...

Page 17: ...ofile telecom ql enabled rep segment qos config scheduling mode min bw guarantee rep block port rep platform fast lsl enable rep platform vlb segment rep segment router isis service instance service policy policy map class set cos set dscp set ip dscp set ip precedence policy map set ip precedence route map set ip precedence tunnel set ip tos route map set network clocks set precedence shape perce...

Page 18: ... platform hardware show platform ptp state show platform ptp stats show platform ptp stats detailed show platform tcam detailed show platform tcam summary show policy map show policy map interface show ptp port running detail show rep topology show table map show xconnect snmp mib rep trap rate speed synce state master synce state slave synchronous mode table map termination transport ipv4 tune bu...

Page 19: ... Command Modes Global configuration config Command History Usage Guidelines This command is used to configure the ECMP hash configurations for improved load distribution of IP traffic The hash crc16 mode algorithm is enabled by default for ECMP Examples The following example shows how to configure the ECMP hash configuration on a Cisco ASR 901 router Router configure terminal Router config asr901 ...

Page 20: ...mp hash config global type Related Commands Command Description asr901 ecmp hash con fig ipv4 type Enables the ipv4 type of ECMP hash configurations asr901 ecmp hash con fig ipv6 type Enables the ipv6 type of ECMP hash configurations asr901 ecmp hash con fig mpls to ip Enables the mpls to ip type of ECMP hash configurations ...

Page 21: ...d is used to configure IPv4 type ECMP hash configurations for improved load distribution of IP traffic All the ECMP parameters are enabled by default except dest l4 port src intf and src l4 port You should configure the asr901 ecmp hash config ipv4 type command to enable them Examples The following example shows how to configure IPv4 type ECMP hash configuration on a Cisco ASR 901 router Router co...

Page 22: ...p hash config ipv4 type Related Commands Command Description asr901 ecmp hash con fig global type Enables the global type of ECMP hash configurations asr901 ecmp hash con fig ipv6 type Enables the ipv6 type of ECMP hash configurations asr901 ecmp hash con fig mpls to ip Enables the mpls to ip type of ECMP hash configurations ...

Page 23: ...d is used to configure IPv6 type ECMP hash configurations for improved load distribution of IP traffic All the ECMP parameters are enabled by default except dest l4 port src intf and src l4 port You should configure the asr901 ecmp hash config ipv6 type command to enable them Examples The following example shows how to configure IPv6 type ECMP hash configuration on a Cisco ASR 901 router Router co...

Page 24: ...p hash config ipv6 type Related Commands Command Description asr901 ecmp hash con fig global type Enables the global type of ECMP hash configurations asr901 ecmp hash con fig ipv4 type Enables the IPv4 type of ECMP hash configurations asr901 ecmp hash con fig mpls to ip Enables the mpls to ip type of ECMP hash configurations ...

Page 25: ...ommand History Usage Guidelines This command is used to configure MPLS to IP type ECMP hash configurations All the ECMP parameters are enabled by default except dest l4 port src intf and src l4 port You should configure the asr901 ecmp hash config mpls to ip command to enable them Examples The following example shows how to configure MPLS to IP type ECMP hash configuration on a Cisco ASR 901 route...

Page 26: ...ecmp hash config mpls to ip Related Commands Command Description asr901 ecmp hash con fig global type Enables the global type of ECMP hash configurations asr901 ecmp hash con fig ipv4 type Enables the IPv4 type of ECMP hash configurations asr901 ecmp hash con fig ipv6 type Enables the IPv6 type of ECMP hash configurations ...

Page 27: ...cription This command has no arguments or keywords Command Default This command is enabled by default Command Modes Interface configuration config if Command History Usage Guidelines This command should be enabled on the SVI interface that is connected to the traffic source After the configuration normal Protocol Independent Multicast sparse mode PIM SM register process begins Examples This exampl...

Page 28: ...ration mode To delete this configuration use the no form of this command asr901 platf frr enable no asr901 platf frr enable Syntax Description This command has no arguments or keywords Command Default The TE FRR functionality is not enabled Command Modes Global configuration config Command History Examples The following example shows how to enable TE FRR on the Cisco ASR 901 router Router configur...

Page 29: ...efault This command is enabled by default Command Modes Global configuration config Command History Usage Guidelines This command is used to enable platform multicast on a Cisco ASR 901 series router Examples This example shows how to enable multicast on a Cisco ASR 901 series router Router configure terminal Router config ip multicast routing Router config asr901 platf multicast enable Related Co...

Page 30: ...enable multi NNI CFM configuration or SLM over cross connect EVC configuration on a Cisco ASR 901 router You can configure by enabling or disabling the command By default the multi NNI CFM configuration is enabled When you run the required command a syslog is generated so that you can save the configuration and reload the router You should reload the router after using the asr901 multi nni cfm com...

Page 31: ... all neighbors of a routing protocol enter the bfd all interfaces command in router configuration mode If you do not want to enable BFD on all interfaces enter the bfd interface command in router configuration mode Examples The following example shows BFD enabled for all Intermediate System to Intermediate System IS IS neighbors Router enable Router configure terminal Router config router isis tag...

Page 32: ... 3 multiplier 3 Router config if end Related Commands interval milliseconds Specifies the rate at which BFD control packets will be sent to BFD peers The configurable time period for the milliseconds argument is from 50 to 999 milliseconds ms min_rx milliseconds Specifies the rate at which BFD control packets will be expected to be received from BFD peers The configurable time period for the milli...

Page 33: ...on the channel without any negotiation With the on mode a usable EtherChannel exists only when a port group in on mode is connected to another port group in on mode If you enter the channel group command on an interface that is added to a channel with a different protocol than the protocol you are entering the command is rejected If the interface belongs to a channel the no form of this command is...

Page 34: ...e interface port channel command or when the channel group gets its first physical interface assignment The port channels are not created at runtime or dynamically Any configuration or attribute changes that you make to the port channel interface are propagated to all interfaces within the same channel group as the port channel for example configuration changes are also propagated to the physical ...

Page 35: ...ode Use the no form of this command to deselect the protocol channel protocol lacp no channel protocol Syntax Description Command Modes Interface configuration Command History Usage Guidelines This command is valid on multiple interfaces for example Fast Ethernet and routers and switches Examples The following example shows how to set the lacp config if channel protocol lacp lacp Specifies LACP to...

Page 36: ... you specify a policy map you can configure policy for new classes or modify the policy for any existing classes in that policy map Class Characteristics The class name that you specify in the policy map ties the characteristics for that class that is its policy to the class map and its match criteria as configured using the class map command When you configure policy for a class and specify its b...

Page 37: ...g pmap class class2 Router config pmap c bandwidth 3000 Router config pmap c random detect Router config pmap c Related Commands Command Description bandwidth policy map class Specifies or modifies the bandwidth allocated for a class belonging to a policy map class map Creates a class map to be used for matching packets to a specified class fair queue class default Specifies the number of dynamic ...

Page 38: ...ejitter buffer dejitter in ms idle pattern 8 bit idle pattern payload size payload size in ms Note You can improve the performance of packet reordering on TDM PWE connections by using the increasing the size of the dejitter buffer using the dejitter buffer parameter Examples The following example shows how to configure CEM interface parameters Router config t Router config class cem mycemclass Rou...

Page 39: ...Commands Command Description dejitter buffer Specifies the size of the dejitter buffer used for network jitter in CEM configuration mode idle pattern Specifies the data pattern to transmit on the T1 E1 line when missing packets are detected on the PWE3 circuit in CEM configuration mode cem Enters circuit emulation configuration mode ...

Page 40: ...atform ptp stats Syntax Description This command has no arguments Command Modes Privileged EXEC Command History Examples The following example shows sample output for clear platform ptp stats command Router clear platform ptp stats PTP counters cleared Related Commands Release Modification 15 1 2 SNG Support for this command was introduced on the Cisco ASR 901 router Command Description show platf...

Page 41: ... clock ordinary domain 0 Router config ptp clk clock port SLAVE slave Router config ptp port transport ipv4 unicast interface loopback Router config ptp clk clock source 8 8 8 1 Related Commands name Specifies a name for the clock port port role Specifies the role of the clock port which can be slave or master slave Sets the clock port to PTP slave mode the port exchanges timing packets with a PTP...

Page 42: ...ster unicast negotiation you do not need to use this command as the router uses negotiation to determine the IP address of PTP slave devices Examples The following example shows how to configure a PTP announcement Router config ptp clk clock port MASTER Master Router config ptp port transport ipv4 unicast interface loopback Router config ptp port clock destination 8 8 8 2 Router config if exit Rou...

Page 43: ...y Usage Guidelines By default the clock source on the interface is set to internal Examples The following example instructs the controller to use an internal clock source Router config ptp clk clock port SLAVE slave Router config ptp port transport ipv4 unicast interface loopback 0 Router config ptp port clock source 2 2 2 2 Router config if exit Router config exit Related Commands clock ip addres...

Page 44: ...roller e1 E1 controller slot port Backplane slot number and port number on the interface Refer to your hardware installation manual for the specific values and slot numbers subslot number Defines the subslot on the router in which the HWIC is installed port Port number of the controller Valid numbers are 0 and 1 The slash mark is required between the slot argument and the port argument Release Mod...

Page 45: ...ic ppp set ip dscp cs Syntax Description This command has no arguments or keywords Command Default None Command Modes Global configuration config Command History Usage Guidelines This command is used to mark the CPU generated traffic transmitted through MLPPP Interface It enables the user to provide desired QoS treatment to CPU generated traffic The valid values are from cs1 to cs7 Examples This e...

Page 46: ...ax Description Command Default None Command Modes Global configuration config Command History Usage Guidelines This command is used to mark the CPU generated traffic transmitted through MLPPP Interface It enables the user to provide desired QoS treatment to CPU generated traffic The valid values are from 0 to 7 Examples This example shows how to re mark the CPU generated traffic from default value...

Page 47: ...de To disable TCAM error printing use the no debug platform tcam error command debug platform tcam error no debug platform tcam error Syntax Description This command has no arguments or keywords Command Modes Privileged EXEC Command History Examples The following is sample output from the debug platform tcam error command Router debug platform tcam error TCAM Error printing turned ON Release Modif...

Page 48: ...AM info printing use the no debug platform tcam info command debug platform tcam info no debug platform tcam info Syntax Description This command has no arguments or keywords Command Modes Privileged EXEC Command History Examples The following is sample output from the debug platform tcam info command Router debug platform tcam info TCAM Info printing turned ON Release Modification 15 3 2 S This c...

Page 49: ...ter config interface cem 0 0 Router config if no ip address Router config if cem 0 Router config if cem dejitter buffer 10 Router config if cem xconnect 10 10 10 10 200 encapsulation mpls Router config if cem xconn exit Router config if cem exit Router config if exit Router config exit Related Commands size Specifies the size of the dejitter buffer in milliseconds The range is 4 to 500 ms the defa...

Page 50: ...rminal Router config interface GigabitEthernet 0 0 Router config if service instance 1310 ethernet ssvc1310 Router config if srv encapsulation dot1q 1310 Router config if srv rewrite ingress tag pop 1 symmetric Router config if srv bridge domain 1310 Router config if srv cfm mep domain sdmm mpid 1310 Router config if srv ecfm mep dmm responder hardware timestamp Related Commands Release Modificati...

Page 51: ...d is changed to 10 or 100 the duplex mode stays at half duplex You must configure the correct duplex mode when the transmission speed is changed to 10 or 100 from 1000 Gigabit Ethernet is full duplex only You cannot change the duplex mode on Gigabit Ethernet ports or on a 10 100 1000 Mbps port that is configured for Gigabit Ethernet When manually configuring the interface speed to either 10 or 100...

Page 52: ...lf speed 10 Forces 10 Mbps and half duplex operation and disables autonegotiation on the interface duplex full speed 10 Forces 10 Mbps and full duplex operation and disables autonegotiation on the interface duplex half speed 100 Forces 100 Mbps and half duplex operation and disables autonegotiation on the interface duplex full speed 100 Forces 100 Mbps and full duplex operation and disables autone...

Page 53: ...s The following example shows how to use the efd notify g8032 command Router configure terminal Router config ethernet cfm global Router config ethernet cfm domain MD4 level 4 Router config ecfm service 1 evc evc1 vlan 99 direction down Router config ecfm srv continuity check Router config ecfm srv continuity check interval 3 3ms Router config ecfm srv offload sampling 6000 Router config ecfm srv ...

Page 54: ...d are single VLAN range of VLANs and lists of the previous two A single 802 1Q service instance allows one VLAN multiple VLANs or a range of VLANs The native keyword can only be set if a single VLAN tag has been specified Only a single service instance per port is allowed to have the native keyword Only one encapsulation command may be configured per service instance Examples The following example...

Page 55: ...vice instance Related Commands Command Description encapsulation dot1q second dot1q Defines the matching criteria to map Q in Q ingress frames on an interface to the appropriate service instance encapsulation untagged Defines the matching criteria to map untagged ingress Ethernet frames on an interface to the appropriate service instance ...

Page 56: ...auses the router to categorize the interface as an 802 1ad interface This causes special processing for certain protocols and other features MSTP uses the IEEE 802 1ad MAC STP address instead of the STP MAC address Certain QoS functions may use the Drop Eligibility DE bit of the IEEE 802 1ad tag The encapsulation dot1ad command requires the interface to be of dot1ad nni network network interface p...

Page 57: ...802 1Q encapsulation Matching criteria to be used to map QinQ frames ingress on an interface to the appropriate EFP The outer tag is unique and the inner tag can be a single VLAN a range of VLANs or lists of VLANs or VLAN ranges encapsulation untagged Matching criteria to be used to map untagged native Ethernet frames entering an interface to the appropriate EFP Command Description ...

Page 58: ...ors use the no form of this command environment monitor no environment monitor Syntax Description This command has no arguments or keywords Command Default This command is enabled by default Command Modes Global configuration Command History Examples The following example shows how to use the environment monitor command Router configure terminal Router config environment monitor Router config end ...

Page 59: ...eceive ESMC message from peer node on the interface then the interface is removed from selectable clock source list By default this is enabled for synchronous mode and disabled for asynchronous mode Note This command is not supported for non synchronous ethernet interfaces Examples The following example shows how to enable ESMC process Router config if esmc mode tx Related Commands tx Transmission...

Page 60: ...t loopback operation configured on the interface stop Stops the Ethernet loopback operation configured on the interface local interface type number Specifies the interface on which to start or stop the loopback operation service instance instance number Specifies the service instance ID This is an optional field external internal source mac address source address Specifies the external or internal...

Page 61: ...fig if srv encapsulation dotlq 10 Router config if srv rewrite ingress tag pop1 Router config if srv bridge domain 10 Router config if srv end Router ethernet loopback start local interface gigabitEthernet 0 1 service instance 10 internal source mac address 0123 4567 89ab destination mac address 255 255 255 timeout 9000 Router ethernet loopback stop local interface gigabitEthernet 0 1 id 3 Related...

Page 62: ...d Modes Interface configuration config if Command History Usage Guidelines Use this command to configure an interface to take specific actions when Ethernet OAM remote failure events occur Release 15 1 2 SNG does not support sending critical event messages but can receive all three message types Examples The following example shows how to configure the action that the Ethernet 1 1 interface takes ...

Page 63: ...how to specify a data pattern Router config t Router config interface cem 0 0 Router config if no ip address Router config if cem 0 Router config if cem idle pattern 0x55 Router config if cem xconnect 10 10 10 10 200 encapsulation mpls Router config if cem xconn exit Router config if cem exit Router config if exit Router config exit Related Commands pattern Optional An 8 bit hexadecimal number tha...

Page 64: ...rt A message displays whenever you create a new VLAN interface so that you can check if you entered the correct VLAN number If you delete an SVI by entering the no interface vlan vlanid command the associated initial domain part IDP pair is forced into an administrative down state and is marked as deleted The deleted interface will not be visible in the show interface command You can reinstate a d...

Page 65: ...nd does not enable the group You must use the interface atm slot imagroup number command to create the group Examples The following example shows the how to create the IMA group Router config interface ATM0 IMA0 Router config if no ip address Related Commands slot Specifies the slot location of the ATM IMA port adapter group number Specifies an IMA group number from 0 to 3 You can create up to fou...

Page 66: ...he group If the first EtherChannel interface is later removed the second EtherChannel interface to be configured becomes the bundled master by default Repeat this configuration on every EtherChannel port to be bundled into a FastEtherChannel FEC or GigabitEtherChannel GEC group This configuration must be present on all EtherChannel interfaces before the EtherChannel group can be configured Example...

Page 67: ...cify either the interfaces or the name of a range macro A range must consist of the same interface type and the interfaces within a range cannot span slots You cannot specify both the interface range and macro keywords in the same command After creating a macro the command does not allow you to enter additional ranges Likewise if you have already specified an interface range the command does not a...

Page 68: ...l VLANs in the specified range that do not already exist If you are using discontiguous VLANs you can use the interface range vlan command to configure multiple SVIs without creating unneeded SVIs and wasting interface descriptor blocks IDBs After specifying a VLAN range you can continue using the interface range command to specify another interface ATM Fast Ethernet Gigabit Ethernet loopback port...

Page 69: ...lue value_number Syntax Description Defaults The default ToS value is 0 Command Modes Pseudowire class configuration Command History Examples Router config pseudowire class ether pw Router config pw ip tos value 1 Related Commands value value_number Specifies the type of service ToS level for IP traffic in the pseudowire Release Modification 15 1 2 SNI Support for this command was introduced on th...

Page 70: ...ion config Command History Usage Guidelines This command is required only when layer 3 is deployed over layer 2 When this command is enabled ARP flushing is done whenever there is a MAC table flush You should use the no form of this command before configuring Layer 3 FRR features Examples The following example shows how to enable l3 over l2 flush buffers for layer 3 over layer 2 deployments on a C...

Page 71: ...fig if Command History Usage Guidelines Use this command to forward tagged and drop untagged layer 2 control protocol packets Examples The following example shows how to configure the forwarding of tagged Layer 2 Control Packets and dropping of untagged layer 2 control packets using the l2proto forward command Router configure terminal Router config interface gigabitethernet 0 1 Router config if l...

Page 72: ...s This data is used for a weighted average calculation in which more recent load data has more weight in the computation than older load data If the load interval is set to 30 seconds the average is computed for the last 30 seconds of load data The load interval command allows you to change the default interval of 5 minutes to a shorter or longer period of time if you change it to a shorter period...

Page 73: ...59 Cisco ASR 901 Aggregation Services Router Command Reference Guide OL 26031 07 Chapter 1 CLI Command Reference load interval Related Commands Command Description show interfaces Displays ALC information ...

Page 74: ...e the maximum number of MAC movements that are allowed in a specified time interval beyond which the MAC movement is termed as flapping As preventive action err disabling is done in one of the ports that has MAC flapping Once the port is err disabled it can be administratively brought up using the shut and no shut commands Examples The following example sets the maximum number of mac movements to ...

Page 75: ... match statement For example if you wanted the IP DSCP values of 0 1 2 3 4 5 6 or 7 note that only one of the IP DSCP values must be a successful match criterion not all of the specified IP DSCP values enter the match ip dscp 0 1 2 3 4 5 6 7 command This command is used by the class map to identify a specific IP DSCP value marking on a packet The ip dscp value arguments are used as markings only T...

Page 76: ...uter config cmap exit Router config policy map priority55 Router config pmap class ip dscp 15 Router config pmap c priority55 Router config pmap c exit Router config pmap exit Router config interface gigabitethernet0 0 Router config if service policy input priority55 Related Commands Command Description class map Creates a class map to be used for matching packets to a specified class policy map C...

Page 77: ...fication numbers separated by spaces for example 2 5 7 or a range of VLAN identification numbers separated by a hyphen for example 25 35 Support Restrictions The following restrictions apply to the match vlan command The match vlan command is supported for IEEE 802 1q and Inter Switch Link ISL VLAN encapsulations only Examples In the following sample configuration the match vlan command is enabled...

Page 78: ...nd Description bandwidth policy map class Specify or modifies the bandwidth allocated for a class belonging to a policy map class map Creates a class map to be used for matching packets to a specified class policy map Creates or modifies a policy map that can be attached to one or more interfaces service policy Attached a policy map to an interface ...

Page 79: ...rface configuration config if Connect configuration xconnect conn config xconnect subinterface configuration config if xconn Command History Usage Guidelines Each interface has a default maximum packet size or MTU size This number generally defaults to the largest size possible for that interface type Note The connect configuration mode is used only for Frame Relay Layer 2 interworking Changing th...

Page 80: ...ue specified with the mtu interface configuration command and you change the value for the mtu interface configuration command the ip mtu value automatically matches the new mtu interface configuration command value However changing the values for the ip mtu configuration commands has no effect on the value for the mtu interface configuration command Examples The following example shows how to spe...

Page 81: ...et interface profile on the GGSN Examples This example shows how to create Ethernet VLAN 20 name it test20 and add it to the VLAN database Router configure terminal Router config vlan 20 Router config vlan name test20 Router config vlan end Related Commands target_name Name of the SCSI target Release Modification 15 1 2 SNG Support for this command was introduced on the Cisco ASR 901 router Comman...

Page 82: ...uplex and speed commands which are used on Ethernet to automatically configure the duplex and speed settings of the interfaces The no negotiation auto command is used to disable the autonegotiation If the speed is set to 1000 Mbps and full duplex is set for the Gigabit Ethernet interface in small form factor pluggable SFP mode then the autonegotiation is disabled forced mode using the no negotiati...

Page 83: ...ch and manual switch commands network clock clear switch t0 external slot card port 10m Syntax Description Command Modes Global configuration Command History Examples This example clears the switch command Router config network clock clear switch t0 slot card port Specifies the slot card port Release Modification 15 1 2 SNG Support for this command was introduced on the Cisco ASR 901 router ...

Page 84: ...s Global configuration Command History Usage Guidelines The network clock eec command configures the clocking system hardware with the desired parameters Examples The following example configures the clocking system hardware with EEC option 1 Router config network clock eec 1 Related Commands 1 For option 1 the default value is EEC Option 1 2048 2 For option 2 the default value is EEC Option 2 154...

Page 85: ...on Command Modes Global configuration Command History Usage Guidelines The ASR 901 router displays a warning message for values above 1800 ms as waiting longer causes the clock to go into the holdover mode Examples This example specifies the hold off timer value for the external interface Router config network clock external 3 1 1 hold off 300 Related Commands slot port card Specifies the slot car...

Page 86: ...x Description Command Default The default value is 300 milliseconds Command Modes Interface configuration Command History Usage Guidelines Displays a warning message for values below 300 ms and above 1800 ms Examples This example configures the hold off timer Router config if network clock hold off 75 global Related Commands global Configures the hold off timer globally Release Modification 15 1 2...

Page 87: ...ription Command Default The default value is 300 milliseconds Command Modes Interface configuration Command History Usage Guidelines Displays a warning message for values below 300 ms and above 1800 ms Examples This example configures the hold off timer Router config if network clock hold off 1000 Related Commands 50 10000 Sets the hold off timer The default value is 300 milliseconds Release Modif...

Page 88: ...ity has changed to undefined and the state machine is informed Examples This example configures the priority of the interface to 23 Router config network clock input source 23 interface top 0 12 priority Selection priority for the clock source 1 is the highest priority When the higher priority clock source fails the next higher priority clock source is selected Priority is a number between 1 and 2...

Page 89: ... Services Router Command Reference Guide OL 26031 07 Chapter 1 CLI Command Reference network clock input source Related Commands Command Description network clock wait to restore Sets the value for the wait to restore timer globally ...

Page 90: ... input source controller Syntax Description Command Modes Global configuration Command History Examples This example configures a clock as one of the nominated sources Router config network clock input source 10 controller e1 0 12 Related Commands priority Selection priority for the clock source 1 is the highest priority When the higher priority clock source fails the next higher priority clock so...

Page 91: ...nal timing output interfaces This command provides station clock output as per G 781 It is recommend that you use the interface level command instead of global commands Global command should preferably be used for interfaces that do not have an interface sub mode Examples This example sets the output source to external interface 3 0 1 Router config network clock output source system 55 external 3 ...

Page 92: ... The value is based on a global interworking Option If Option 1 is configured the available values are QL PRC QL SSU A QL SSU B QL SEC and QL DNU If Option 2 is configured with GEN 2 the available values are QL PRS QL STU QL ST2 QL TNC QL ST3 QL SMC QL ST4 and QL DUS If option 2 is configured with GEN1 the available values are QL PRS QL STU QL ST2 QL SMC QL ST4 and QL DUS This command is not suppo...

Page 93: ...iority are always non revertive The default value is non revertive In non revertive switching a switch to an alternate reference is maintained even after the original reference recovers from the failure that caused the switch In revertive switching the clock switches back to the original reference after that reference recovers from the failure independent of the condition of the alternate referenc...

Page 94: ...figuration mode Command History Usage Guidelines The wait to restore time is configurable in the range of 0 to 86400 seconds The default value is 300 seconds Caution Ensure that you set the wait to restore values above 50 seconds to avoid a timing flap Examples The following example shows how to use the network clock wait to restore command Router config t Router config if network clock wait to re...

Page 95: ... restore time is configurable in the range of 0 to 86400 seconds The default value is 300 seconds Caution Ensure that you set the wait to restore values above 50 seconds to avoid a timing flap Examples The following example shows how to use the network clock select command Router config t Router config network clock wait to restore 360 global Router config exit Related Commands 0 86400 The wait to...

Page 96: ...story Usage Guidelines The network clock set lockout command locks out a clock source A clock source flagged as lock out is not selected for SyncE To clear the lock out on a source use network clock clear lockout interface interface_name slot port external slot card port command Note Lockout takes precedence over force switch and force switch overrides the manual switch Examples This example shows...

Page 97: ...lear switch command to remove the forced switch command network clock switch force interface interface_name slot port external slot card port Syntax Description Command Modes Global configuration Command History Examples This example forcefully selects the synchronization source Router config network clock switch force interface GigabitEthernet 0 1 t1 interface_name Specifies the interface name sl...

Page 98: ...nual command network clock switch manual interface interface_name slot port external slot card port Syntax Description Command Modes Global configuration Command History Examples This example manually sets the synchronization source Router config network clock switch manual interface GigabitEthernet 0 1 t1 interface_name Specifies the interface name slot card port Specifies the external slot card ...

Page 99: ...nd History Usage Guidelines The network clock synchronization automatic command enables the G 781 based automatic clock selection process G 781 is the ITU T Recommendation that specifies the synchronization layer functions Examples The following example shows how to enable the G 781 based automatic clock selection process Router config network clock synchronization automatic Related Commands Relea...

Page 100: ...etween options need to be configured again The default option is 1 and while choosing option 2 you need to specify the second generation message GEN2 or first generation message GEN1 Examples This example show how to configure the router to work in a synchronized network mode Router config network clock synchronization ssm option 2 GEN1 Related Commands 1 Default Refers to synchronization networks...

Page 101: ...mples The following example shows how to use the offload sampling value command Router configure terminal Router config ethernet cfm global Router config ethernet cfm domain MD4 level 4 Router config ecfm service 1 evc evc1 vlan 99 direction down Router config ecfm srv continuity check Router config ecfm srv continuity check interval 3 3ms Router config ecfm srv offload sampling 6000 Related Comma...

Page 102: ...te Router config t Router config interface cem 0 0 Router config if no ip address Router config if cem 0 Router config if cem payload size 256 Router config if cem xconnect 10 10 10 10 200 encapsulation mpls Router config if cem xconn exit Router config if cem exit Router config if exit Router config exit payload size Specifies the size of the payload for packets on a structured CEM channel Valid ...

Page 103: ...7 Chapter 1 CLI Command Reference payload size Related Commands Command Description dejitter buffer Configures the size of the dejitter buffer on a CEM channel idle pattern Specifies the data pattern transmitted on the T1 E1 line when missing packets are detected on the PWE3 circuit ...

Page 104: ...s a number from 1 to 100 burst in msec Optional Burst in milliseconds Valid range is a number from 1 to 2000 bc Optional Conform burst bc size used by the first token bucket for policing traffic conform burst in msec Optional Specifies the bc value in milliseconds Valid range is a number from 1 to 2000 ms Optional Indicates that the burst value is specified in milliseconds be Optional Peak burst b...

Page 105: ...Relay frame and sends the packet with the DE bit set to 1 set prec transmit new prec Sets the IP precedence and sends the packet with the new IP precedence value setting transmit Sends the packet with no alteration policed dscp transmit Exceed and violate action only Changes the DSCP value per the policed DSCP map and sends the packet set cos inner transmit value Sets the inner class of service fi...

Page 106: ...el The police percent command can be configured for use in either a parent or child policy map Bandwidth and Hierarchical Policy Maps The police percent command uses the maximum rate of bandwidth available as the reference point for calculating the bandwidth percentage When the police percent command is configured in a child policy map the police percent command uses the bandwidth amount specified...

Page 107: ...l circuit VC the sustained cell rate SCR is used in the calculation For an available bit rate ABR VC the minimum cell rate MCR is used in the calculation For more information on bandwidth allocation refer to the Congestion Management Overview chapter in the Cisco IOS Quality of Service Solutions Configuration Guide Examples The following example shows how to configure traffic policing using a CIR ...

Page 108: ... for that interface or VC shape percent Specifies average or peak rate traffic shaping on the basis of a percentage of bandwidth available on an interface show policy map Displays the configuration of all classes for a specified service policy map or all classes for all existing policy maps show policy map interface Displays the packet statistics of all classes that are configured for all service ...

Page 109: ... is updated cir Specifies the CIR value in bits per second The value is a number from 8000 to 200000000 bc Optional Conform burst bc size used by the first token bucket for policing conform burst Optional Specifies the bc value in bytes The value is a number from 1000 to 51200000 pir Optional Peak information rate PIR at which the second token bucket is updated pir Optional Specifies the PIR value...

Page 110: ...CP value and sends the packet with the new IP DSCP value setting set dscp tunnel transmit value Sets the DSCP value 0 to 63 in the tunnel header of a Layer 2 Tunnel Protocol Version 3 L2TPv3 or Generic Routing Encapsulation GRE tunneled packet for tunnel marking and transmits the packet with the new value set frde transmit Sets the Frame Relay discard eligible DE bit from 0 to 1 on the Frame Relay...

Page 111: ...oken buckets are updated as follows Tc t min CIR t t1 Tc t1 Bc Tp t min PIR t t1 Tp t1 Be Marking Traffic The two rate policer marks packets as either conforming exceeding or violating a specified rate The following points using a packet of B bytes illustrate how a packet is marked If B Tp t the packet is marked as violating the specified rate If B Tc t the packet is marked as exceeding the specif...

Page 112: ...it traffic to an average committed rate of 500 kbps and a peak rate of 1 Mbps Router config class map police Router config cmap match access group 101 Router config cmap policy map policy1 Router config pmap class police Router config pmap c police cir 500000 bc 10000 pir 1000000 be 10000 conform action transmit exceed action set prec transmit 2 violate action drop Router config pmap c exit Router...

Page 113: ...Command Description police Configures traffic policing policy map Creates or modifies a policy map that can be attached to one or more interfaces to specify a service policy service policy Attaches a policy map to an input interface or an output interface to be used as the service policy for that interface show policy map Displays the configuration of all classes for a specified service policy map...

Page 114: ...class Because you can configure a maximum of 64 class maps a policy map cannot contain more than 64 class policies A single policy map can be attached to more than one interface concurrently Except as noted when you attempt to attach a policy map to an interface the attempt is denied if the available bandwidth on the interface cannot accommodate the total bandwidth requested by class policies that...

Page 115: ...ces Router Command Reference Guide OL 26031 07 Chapter 1 CLI Command Reference policy map Examples The following example creates a policy map called in gold policy Router config policy map in gold policy Router config pmap class in class1 ...

Page 116: ...protocol address virtual template inarp no broadcast disable check subnet no enable check subnet Syntax Description protocol Choose one of the following values arp IP ARP bridge bridging cdp Cisco Discovery Protocol clns ISO Connectionless Network Service CLNS clns_es ISO CLNS end system clns_is ISO CLNS intermediate system cmns ISO CMNS compressedtcp Compressed TCP ip IP llc2 llc2 pad packet asse...

Page 117: ...the peer router s IP address is not in the same subnet as the receiving sub interface on which the PVC is configured Does not provide support for SVC PVC and SVC bundles PVC range and PVC in range configuration modes support only IP Examples In the following example the router creates a static map on a VC indicates that 10 68 34 237 is connected to this VC and sends ATM pseudobroadcasts protocol i...

Page 118: ...ation Services Router Command Reference Guide OL 26031 07 Chapter 1 CLI Command Reference protocol ATM In the following example the VC carries PPP traffic and its associated parameters protocol ppp 10 68 34 237 virtual template ...

Page 119: ...the following configuration settings Data encapsulation type Control protocol IP address of the local Layer 2 interface Type of service ToS value in IP headers The local interface name for each pseudowire class configured between a pair of PE routers can be the same or different After entering the pseudowire class command the router switches to pseudowire class configuration mode where PW settings...

Page 120: ...Chapter 1 CLI Command Reference pseudowire class Related Commands Command Description pseudowire Binds an attachment circuit to a Layer 2 PW for an xconnect service xconnect Binds an attachment circuit to an Layer 2 PW for an xconnect service and then enters xconnect configuration mode ...

Page 121: ...om Syntax Description This command has no arguments Command Modes Clock configuration Command History Usage Guidelines This command enables the PTP telecom profile on the router Examples The following example shows how to configure a PTP clock and enter clock configuration mode Router configure terminal Router config ptp clock ordinary domain 0 Router config ptp clk ptp profile telecom Related Com...

Page 122: ...obal configuration Command History Usage Guidelines This command requires that you specify a synchronous Ethernet clock source Examples The following example shows how to use the ql enabled command Router config t Router config ql enabled rep segment 5 Router config exit Related Commands segment Specifies a REP segment segment id The REP segment ID of the REP segment Release Modification 15 1 2 SN...

Page 123: ...config scheduling mode min bw guarantee Syntax Description Command Default None Command Modes Interface configuration config if Command History Usage Guidelines This command allows the per class rate to use unutilized bandwidth if any in addition to the minimum guaranteed bandwidth that is configured Examples The following example shows how to use the qos config scheduling mode min bw guarantee co...

Page 124: ...led The REP port ID is a 16 character hexadecimal value You can view the port ID for an interface by entering the show interface interface id rep detail command neighbor_offset Identify the VLAN blocking alternate port by entering the offset number of a neighbor The range is 256 to 256 a value of 0 is invalid The primary edge port has an offset number of 1 positive numbers above 1 identify downstr...

Page 125: ...s the configured VLANs and unblocks all other segment ports If the primary edge port cannot determine the alternate port for VLAN balancing the default action is no preemption Each port in a segment has a unique port ID The port ID format is similar to the one used by the spanning tree algorithm a port number unique on the bridge associated to a MAC address unique in the network To determine the p...

Page 126: ...face gigabitethernet0 2 rep detail GigabitEthernet0 2 REP enabled Segment id 2 Segment PortID 0080001647FB1780 Preferred flag No Operational Link Status TWO_WAY Current Key 007F001647FB178009C3 Port Role Open Blocked Vlan empty Admin vlan 3 Preempt Delay Timer 35 sec Load balancing block port 6 Load balancing block vlan 1 110 STCN Propagate to none LSL PDU rx 1466780 tx 3056637 HFL PDU rx 2 tx 0 B...

Page 127: ...words Command Default None Command Modes Global configuration config Command History Usage Guidelines This command must be configured on the Cisco ASR 901 Routers to support Resilient Ethernet Protocol REP sessions with LSL timers that are less than one second long When this command is configured you can expect only subsecond convergence for REP The subsecond convergence period is also applicable ...

Page 128: ...routers participating in VLB for a particular segment and should have a matching VLAN list This vlan list should also match with the rep block command issued on primary edge port Examples The example shows how to configure the VLAN Load Balancing group Router config rep platform vlb segment 1 vlan 100 200 Related Commands segment id ID of the REP segment The range is from 1 to 1024 vlan vlan list ...

Page 129: ...as the secondary edge port Each segment has only two edge ports Note You must configure two edge ports including one primary edge port for each segment no neighbor Optional Enter no neighbor to configure a port with no external REP neighbors as an edge port The port inherits all properties of edge ports and you can configure them the same as any edge port primary Optional On an edge port specify t...

Page 130: ...Release 12 2 33 MRA does not support the no neighbor keyword If two ports on a switch belong to the same segment and one is configured as an edge port and one as a regular segment port a misconfiguration the edge port is treated as a regular segment port If you configure two ports in a segment as the primary edge port for example ports on different switches the REP selects one of them to serve as ...

Page 131: ...and To verify which port in the segment is the primary edge port enter the show rep topology privileged EXEC command Related Commands Command Description show interfaces rep detail Displays REP configuration and status for all interfaces or the specified interface show rep topology detail Displays information about all ports in the segment including which one was configured and selected as the pri...

Page 132: ...O IGRP at the same time However each area in an IS IS multiarea configuration should have a nonnull area tag to facilitate identification of the area You can configure only one IS IS routing process to perform Level 2 interarea routing You can configure this process to perform Level 1 intra area routing at the same time You can configure up to 29 additional processes as Level 1 only processes If L...

Page 133: ... processed locally if the specified target identifier is in the local target identifier cache If not they are propagated routed to all interfaces in the same Level 1 area The same area is defined as the area configured on the input interface Type 2 PDUs are processed locally if the specified target identifier is in the local target identifier cache If not they are propagated via all interfaces all...

Page 134: ...face and attaches an area designator to the routing process ip router isis Configures an IS IS routing process for IP on an interface and attaches an area designator to the routing process net Configures an IS IS NET for the routing process redistribute IP Redistribute routes from one routing domain into another routing domain route map IP Defines the conditions for redistributing routes from one ...

Page 135: ...Command Default None Command Modes Layer 2 VPN configuration config l2vpn Command History Usage Guidelines You must provision a Multiprotocol Label Switching MPLS pseudowire before configuring an Ethernet service instance in Layer 2 VPN configuration mode Examples The following example shows how to configure an Ethernet service instance on a Cisco uBR10012 router Router config l2vpn service instan...

Page 136: ...licy input output policy map name is to attach service policies to interfaces The child policy is the previously defined service policy that is being associated with the new service policy through the use of the service policy command The new service policy using the preexisting service policy is the parent policy This command has the following restrictions The set command is not supported on the ...

Page 137: ...cy map class Specifies or modifies the bandwidth allocated for a class belonging to a policy map fair queue Specifies the number of queues to be reserved for use by a traffic class policy map Specifies the name of the service policy to configure priority Gives priority to a class of traffic belonging to a policy map service policy Specifies the name of the service policy to be attached to the inte...

Page 138: ...ches to interoperate and provide quality of service QoS based on the CoS markings Layer 2 to Layer 3 mapping can be configured by matching on the CoS value because switches already can match and set CoS values If a packet that needs to be marked to differentiate user defined QoS services is leaving a router and entering a switch the router should set the CoS value of the packet because the switch ...

Page 139: ...e information about the table map value mapping command see the table map value mapping command page In this example the setting of the CoS value is based on the precedence value defined in table map1 Router config policy map policy cos Router config pmap class class default Router config pmap c set cos precedence table table map1 Router config pmap c end Related Commands Command Description match...

Page 140: ...cp dscp value no set ip dscp dscp value Syntax Description Command Default Disabled Command Modes Policy map class configuration Command History ip Optional Specifies that the match is for IPv4 packets only If not used the match is on both IPv4 and IPv6 packets dscp value A number from 0 to 63 that sets the DSCP value The following reserved keywords can be specified instead of numeric values EF ex...

Page 141: ...t do not specify the table keyword and the applicable table map name argument the default action will be to copy the value associated with the from field category as the DSCP value For instance if you configure the set dscp cos command the CoS value will be copied and used as the DSCP value Note The CoS field is a three bit field and the DSCP field is a six bit field If you configure the set dscp ...

Page 142: ...nterface refer to the Modular Quality of Service Command Line Interface section of the Cisco IOS Quality of Service Solutions Configuration Guide Related Commands Command Description match protocol Configures the match criteria for a class map on the basis of the specified protocol policy map Creates or modifies a policy map that can be attached to one or more interfaces to specify a service polic...

Page 143: ...gregation Services Router Command Reference Guide OL 26031 07 Chapter 1 CLI Command Reference set ip dscp set ip dscp The set ip dscp command is replaced by the set dscp command See the set dscp command for more information ...

Page 144: ...nd Reference Guide OL 26031 07 Chapter 1 CLI Command Reference set ip precedence policy map set ip precedence policy map The set ip precedence policy map command is replaced by the set precedence command See the set precedence command for more information ...

Page 145: ...he corresponding name argument for precedence values in the IP header They are listed from least to most important You can set the precedence using either a number or the corresponding name Once the IP Precedence bits are set other QoS services such as weighted fair queueing WFQ and Weighted Random Early Detection WRED then operate on the bit settings number name Optional A number or name that set...

Page 146: ...rily correspond numerically to better or worse handling in the network Use the route map IP global configuration command with the match and set route map configuration commands to define the conditions for redistributing routes from one routing protocol into another or for policy routing Each route map command has an associated list of match and set commands The match commands specify the match cr...

Page 147: ...ader of the tunnel packet and overwrites the values set by ip tos commands The order of enforcement is as follows when these commands are used simultaneously 1 set ip dscp tunnel or set ip precedence tunnel L2TPv3 or GRE tunnel marking 2 ip tos reflect 3 ip tos tos value This is the designed behavior We recommend that you configure only L2TPv3 or GRE tunnel marking and reconfigure any peers config...

Page 148: ...Router config cmap match fr de Router config cmap exit Router config policy map policy1 Router config pmap class tunnel Router config pmap c set ip precedence tunnel 7 Router config pmap c end Related Commands Command Description ip tos Specifies the ToS level for IP traffic in the TN3270 server set ip dscp tunnel Sets the DSCP value in the header of an L2TPv3 tunneled packet ...

Page 149: ...the four bits in binary form The T3 bit sets the delay Setting T3 to 0 equals normal delay and setting it to 1 equals low delay tos bit value Optional A value number from 0 to 15 that sets the ToS bits in the IP header See Table 1 5 for more information max reliability Optional Sets the maximum reliability ToS bits to 2 max throughput Optional Sets the maximum throughput ToS bits to 4 min delay Op...

Page 150: ...mands specify the match criteria the conditions under which redistribution or policy routing is allowed for the current route map command The set commands specify the set actions the particular redistribution or policy routing actions to perform if the criteria enforced by the match commands are met The no route map command deletes the route map The set route map commands specify the redistributio...

Page 151: ...ommand Modes Privileged EXEC Command History Examples The following example shows how to use the set network clocks force reselect command Router set network clocks force reselect Related Commands force reselect Forces the router to select a new network clock next select Forces the router to select the next available network clock Release Modification 15 1 2 SNG Support for this command was introd...

Page 152: ...e one value or the other but not both Bit Settings Once the precedence bits are set other quality of service QoS features such as weighted fair queueing WFQ and Weighted Random Early Detection WRED then operate on the bit settings Precedence Value The network gives priority or some type of expedited handling to marked traffic through the application of WFQ or WRED at points downstream in the netwo...

Page 153: ...recedence range for example 10 the packet marking value will not be copied and the packet will not be marked No action is taken Setting Precedence Values for IPv4 Packets Only To set the precedence values for IPv4 packets only use a command involving the ip keyword like the match ip precedence or match ip dscp command or include the match protocol ip command along with the others in the class map ...

Page 154: ... group ID that can be used later to classify packets show policy map Displays the configuration of all classes for a specified service policy map or all classes for all existing policy maps show policy map interface Displays the configuration for all classes configured for all service policies on the specified interface or displays the classes for the service policy for a specific PVC on the inter...

Page 155: ... value in bits per second bps is calculated on the basis of the interface bandwidth and the percent value entered with this command The show policy map interface command can then be used to verify the CIR bps value calculated average Specifies average rate traffic shaping percent Specifies that a percent of bandwidth will be used for either the average rate traffic shaping or peak rate traffic sha...

Page 156: ...be used to calculate the total amount of bandwidth available on an entity for example a physical interface When the bandwidth and priority commands calculate the total amount of bandwidth available on an entity the following guidelines are invoked If the entity is a physical interface the total bandwidth is the bandwidth on the physical interface If the entity is a shaped ATM permanent virtual cir...

Page 157: ...res traffic policing on the basis of a percentage of bandwidth available on an interface policy map Creates or modifies a policy map that can be attached to one or more interfaces to specify a service policy priority Gives priority to a class of traffic belonging to a policy map service policy Attaches a policy map to an input interface or VC or an output interface or VC to be used as the service ...

Page 158: ...bits sent out in each interval mean rate Optional Also called committed information rate CIR Indicates the bit rate used to shape the traffic in bits per second When this command is used with backward explicit congestion notification BECN approximation the bit rate is the upper bound of the range of bit rates that will be permitted For a committed average burst rate valid values are 30 000 10 000 ...

Page 159: ...e average 1000000 interface pos1 0 0 service policy output dts interface all action Traffic Shaping Overhead Accounting for ATM When a parent policy has ATM overhead accounting enabled for shaping you are not required to enable accounting at the child level using the police command In the following configuration example ATM overhead accounting is enabled for bandwidth on the gaming and class defau...

Page 160: ...lass belonging to a policy map and enables ATM overhead accounting show policy map Displays the configuration of all classes for a specified service policy map or all classes for all existing policy maps If configured the command output includes information about ATM overhead accounting show running config Displays the current configuration of the router If configured the command output includes i...

Page 161: ...ents or keywords Command Modes Privileged EXEC Command History Usage Guidelines This command displays the platform support for IPv4 or IPv6 multicast Examples This example shows the output from show asr901 multicast support command on a Cisco ASR 901 series router Router show asr901 multicast support Platform support for IPv4 v6 Multicast ENABLED Related Commands Release Modification 15 4 1 S This...

Page 162: ...ywords Command Modes Privileged EXEC Command History Examples The following example shows output from the show atm cell packing command Router show atm cell packing avg avg Circuit local cells pkt negotiated cells pkt MCPT Type MNCP rcvd MNCP sent us ATM0 2 0 1 200 vc 1 200 1 0 1 0 50 ATM0 2 0 1 300 vc 1 300 1 0 1 0 50 Related Commands Release Modification 15 1 2 SNG Support for this command was i...

Page 163: ...UP Enabled UP CEM0 4 4 UP UP Enabled UP CEM0 5 5 UP UP Enabled UP Router show cem circuit 5 CEM0 5 ID 5 Line UP Admin UP Ckt Enabled Controller state up Idle Pattern 0xFF Idle cas 0x8 Dejitter 4 Sample Rate 1 Payload Size 192 Framing Framed DS0 channels 1 24 CEM Defects Set None Signalling No CAS RTP No RTP Ingress Pkts 527521938 Dropped 0 Egress Pkts 527521938 Dropped 0 CEM Counter Details Input ...

Page 164: ...eference show cem circuit Related Commands Command Description show cem circuit detail Displays detailed information about all CEM circuits show cem platform Displays platform specific error counters for all CEM circuits show cem platform errors Displays platform specific error counters for all CEM circuits ...

Page 165: ...cem_drops 50 527658759 net2cem_drops_underflow 25 net2cem_drops_overflow 25 Last cleared 6d02h CEM0 2 errors net2cem_drops 2 526990836 net2cem_drops_overflow 2 Last cleared never CEM0 3 errors net2cem_drops 1 526982274 net2cem_drops_overflow 1 Last cleared never CEM0 4 errors net2cem_drops 51 527658758 net2cem_drops_underflow 26 net2cem_drops_overflow 25 Last cleared 6d02h CEM0 5 errors net2cem_dr...

Page 166: ... CLI Command Reference show cem platform Related Commands Command Description show cem circuit Displays a summary of CEM circuits show cem circuit detail Displays detailed information about all CEM circuits show cem platform errors Displays platform specific error counters for all CEM circuits ...

Page 167: ...ing of IPv6 traffic if the traffic is bridged onto an EtherChannel for example it is a Layer 2 channel and traffic in the same VLAN is bridged across it the traffic is always load balanced by the IPv6 addresses or src dest or src dest depending on the configuration For this reason the switch ignores the MAC IP ports for bridged IPv6 traffic If you configure src dst mac the src dst ip v6 address is...

Page 168: ...iguration src dst mac EtherChannel Load Balancing Addresses Used Per Protocol Non IP Source XOR Destination MAC address IPv4 Source XOR Destination MAC address IPv6 Source XOR Destination MAC address routed packets Source XOR Destination IP address bridged packets Related Commands Command Description channel group Assigns and configures an EtherChannel interface to an EtherChannel group channel pr...

Page 169: ...owing example shows how to verify the configuration Router show ethernet loopback active Interface GigabitEthernet0 3 Service Instance 32 Direction Terminal Time out sec 300 Status on Start time 14 15 01 742 IST Tue Jun 18 2013 Time left 00 04 48 Source Mac Address 0000 0002 0002 Destination Mac Address 4055 3989 751c Related Commands active Displays active ethernet loopback sessions brief Display...

Page 170: ...d operational status use the show interface port channel command in privileged EXEC mode show interface port channel number Syntax Description Command Default No default behaviors or values Command Modes Privileged EXEC Command History number Optional value enables the display of information for one port channel interface number The range is from 1 to 8 Release Modification 15 1 2 SNG Support for ...

Page 171: ... on all VLANs The other failed Port Role shows as Fail No Ext Neighbor this port blocks traffic for all VLANs When the external neighbors for the failed ports are configured the failed ports go through the alternate port state transitions and eventually go to an Open state or remain as the alternate port based on the alternate port election mechanism The output of this command is also included in ...

Page 172: ...HBOR FailLogOpen This is sample output from the show interface rep detail command for a specified interface Switch show interface gigabitethernet0 2 rep detail GigabitEthernet0 2 REP enabled Segment id 1 Segment PortID 00030019E85BDD00 Preferred flag No Operational Link Status INIT_DOWN Current Key 00000000000000000000 Port Role Fail Blocked VLAN 1 4094 Admin vlan 1 Preempt Delay Timer disabled LS...

Page 173: ...r to any VRF use the interfaces keyword To display information about VPN IDs assigned to a PE router use the id keyword Examples The following example displays information about all the VRFs configured on the router including the downstream VRF for each associated VAI The lines that are highlighted for documentation purposes only indicate the downstream VRF Router show ip vrf Name Default RD Inter...

Page 174: ...default VPNID not set Interfaces Virtual Access3 Virtual Access4 Connected addresses are not in global routing table No Export VPN route target communities Import VPN route target communities RT 2 1 No import route map No export route map Table 1 7 describes the significant fields shown in the display The following example shows the interfaces bound to a particular VRF Router show ip vrf interface...

Page 175: ...rs RDs Router show ip vrf id VPN Id Name RD 2 3 vpn2 not set A1 3F6C vpn1 100 1 Table 1 9 describes the significant fields shown in the display Table 1 8 show ip vrf interfaces Field Descriptions Field Description Interface Specifies the network interfaces for a VRF IP Address Specifies the IP address of a VRF interface VRF Specifies the VRF name Protocol Displays the state of the protocol up or d...

Page 176: ...in the Learn field are always set to Yes Examples The following example shows the output for the show mac address table count command Router show mac address table count address mac addr Displays information about the MAC address table for a specific MAC address see the Usage Guidelines section for format guidelines vlan vlan id Optional Displays information for a specific VLAN only Range 1 to 409...

Page 177: ... Chapter 1 CLI Command Reference show mac address table Mac Entries for Vlan 4094 Dynamic Address Count 1 Static Address Count 0 Total Mac Addresses 1 Mac Entries for Vlan 3107 Dynamic Address Count 0 Static Address Count 0 Total Mac Addresses 0 Total Mac Address Space Available 32756 ...

Page 178: ...d Synchronization source manually switched Automatic selection process Enable Equipment Clock 2048 EEC Option1 Clock Mode QL Disable ESMC Disabled SSM Option 1 T0 GigabitEthernet0 4 Hold off global 300 ms Wait to restore global 300 sec Tsm Delay 180 ms Revertive No Nominated Interfaces Interface SigType Mode QL Prio QL_IN ESMC Tx ESMC Rx Internal NA NA Dis 251 QL SEC NA NA To0 12 NA NA En 1 QL FAI...

Page 179: ...tion recorded begin 2A sf_change 2A Nominated Interfaces Interface SigType Mode QL Prio QL_IN ESMC Tx ESMC Rx Internal NA NA Dis 251 QL SEC NA NA To0 12 NA NA En 3 QL SEC NA NA External 0 0 0 10M NA Dis 1 QL SEC NA NA Gi0 11 NA Sync En 2 QL DNU T4 Out External Interface SigType Input Prio Squelch AIS External 0 0 0 E1 CRC4 Internal 1 FALSE FALSE Interface Local Interface Internal Signal Type NA Mo...

Page 180: ...figured QL Receive Overrided QL Transmit QL Transmit Configured Hold off 300 Wait to restore 0 Lock Out FALSE Signal Fail FALSE Alarms FALSE Active Alarms None Slot Disabled FALSE SNMP input source index 3 SNMP parent list index 0 Local Interface Gi0 11 Signal Type NA Mode Synchronous Ql disabled ESMC Tx ENABLED ESMC Rx ENABLED Priority 2 QL Receive QL DNU QL Receive Configured QL Receive Override...

Page 181: ...and Reference show network clock synchronization Priority 1 QL Receive QL SEC QL Receive Configured QL Receive Overrided QL Transmit QL Transmit Configured Hold off 300 Wait to restore 0 Lock Out FALSE Signal Fail FALSE Alarms FALSE Slot Disabled FALSE SNMP input source index 1 SNMP parent list index 1 ...

Page 182: ...bout the adrian hardware bits Displays information about the BITS hardware cpld Displays information about the CPLD hardware cpu Displays information about the CPU ethernet Displays information about the ethernet interfaces on the Cisco ASR 901 fio Displays information about the FIO fpga hardware hwic Displays information about the HWICs installed on the Cisco ASR 901 rtm Displays information abou...

Page 183: ...ec Window Forward Flow Transactions Used 23 0 Forward Flow Oper Min TDEV 4254 0 nsec Forward Mafie 38 0 Forward Flow Min Cluster Width 7550 0 nsec Forward Flow Mode Width 21400 0 nsec Reverse Flow Weight 100 0 Reverse Flow Transient Free 900 900 sec Window Reverse Flow Transient Free 3600 3600 sec Window Reverse Flow Transactions Used 200 0 Reverse Flow Oper Min TDEV 487 0 nsec Reverse Mafie 36 0 ...

Page 184: ...and Reference show platform ptp state Forward Interpacket Jitter 0 0 usec Reverse IPDV Below Threshold 0 0 Reverse Maximum IPDV 0 0 usec Reverse Interpacket Jitter 0 0 usec Related Commands Command Description show platform ptp stats Displays statistics about the ptp protocol on the Cisco ASR 901 router ...

Page 185: ... Router show platform ptp stats Statistics for PTP clock 0 Number of ports 1 Pkts Sent 1811997 Pkts Rcvd 619038 Pkts Discarded 0 Statistics for PTP clock port 1 Pkts Sent 1811997 Pkts Rcvd 619038 Pkts Discarded 0 Signals Rejected 0 Statistics for peer 1 IP addr 9 9 9 14 Pkts Sent 355660 Pkts Rcvd 124008 Statistics for peer 2 IP addr 9 9 9 13 Pkts Sent 355550 Pkts Rcvd 123973 Statistics for peer 3 ...

Page 186: ...outer Command Reference Guide OL 26031 07 Chapter 1 CLI Command Reference show platform ptp stats Pkts Rcvd 123326 Related Commands Command Description show platform ptp status Displays the status of the ptp protocol on the Cisco ASR 901 router ...

Page 187: ...t for show platform ptp stats detailed comamnd Router show platform ptp stats detailed Statistics for PTP clock 0 Number of ports 1 Pkts Sent 37416 Pkts Rcvd 113563 Invalid Pkts Rcvd 0 Statistics for PTP clock port 1 Pkts Sent 37416 Pkts Rcvd 113563 Invalid Pkts Rcvd 0 Statistics for peer 0 IP address 10 10 10 10 Announces Sent 0 Announces Rcvd 297 Syncs Sent 0 Syncs Rcvd 37925 Follow Ups Sent 0 F...

Page 188: ... Router Command Reference Guide OL 26031 07 Chapter 1 CLI Command Reference show platform ptp stats detailed Related Commands Command Description show platform ptp stats Displays the statistics of the ptp protocol on the Cisco ASR 901 router ...

Page 189: ...he show platform tcam detailed command Router show platform tcam detailed Ingress 2 8 slices 512 2048 entries used Pre Ingress 3 4 slices 768 1024 entries used Egress 0 4 slices 0 512 entries used Slice ID 1 Stage Pre Ingress Mode Single Entries used 28 256 Slice allocated to Layer 2 Classify and Assign Group Slice ID 4 Stage Pre Ingress Mode Double Entries used 10 128 Slice allocated to L2CP Slic...

Page 190: ...m summary command show platform tcam summary Syntax Description This command has no arguments Command Modes Privileged EXEC Command History Examples The following is sample output freom the show platform tcam summary command Router show platform tcam summary Ingress 2 8 slices 512 2048 entries used Pre Ingress 3 4 slices 768 1024 entries used Egress 0 4 slices 0 512 entries used Release Modificati...

Page 191: ...rmation if configured and used to determine the amount of unused excess bandwidth to allocate to a class queue during periods of congestion Examples This section provides sample output from typical show policy map commands Depending upon the interface or platform in use and the options enabled for example Weighted Fair Queueing WFQ the output you see may vary slightly Traffic Policing Example The ...

Page 192: ...ault class before you configure its policy class map Creates a class map to be used for matching packets to a specified class drop Configures a traffic class to discard packets belonging to a specific class police Configures traffic policing police two rates Configures traffic policing using two rates the CIR and the PIR policy map Creates or modifies a policy map that can be attached to one or mo...

Page 193: ...e ranges from 0 to 1 less than the maximum value set for this interface by the atm vc per vp command Typically the lower values 0 to 31 are reserved for specific traffic F4 Operation Administration and Maintenance OAM switched virtual circuit SVC signaling Integrated Local Management Interface ILMI and so on and should not be used The VCI is a 16 bit field in the header of the ATM cell The VCI val...

Page 194: ...orm specific SPA hardware installation guide and the corresponding Specifying the Interface Address on an SPA topic in the platform specific SPA software configuration guide for subslot information port ATM shared port adapter only Port or interface number See the appropriate hardware manual for port information For SPAs see the corresponding Specifying the Interface Address topics in the platform...

Page 195: ...cy map that can be attached to one or more interfaces to specify a service policy priority Specifies that low latency behavior must be given to a traffic class and configures multiple priority queues shape percent Specifies average or peak rate traffic shaping on the basis of a percentage of bandwidth available on an interface show class map Display all class maps and their matching criteria show ...

Page 196: ...not required for selecting the best master Examples This example shows the output from show ptp port running detail command on a Cisco ASR 901 router Router show ptp port running detail PORT SLAVE CURRENT PTP MASTER PORT Protocol Address 10 10 10 10 Clock Identity 0xE4 D3 F1 FF FE 22 FD B8 PORT SLAVE PREVIOUS PTP MASTER PORT Protocol Address 30 30 30 30 Clock Identity 0xE0 2F 6D FF FE 74 EF 70 Rea...

Page 197: ...7 Chapter 1 CLI Command Reference show ptp port running detail LOCAL PRIORITY 1 Protocol Address 30 30 30 30 Clock Identity 0xE0 2F 6D FF FE 74 EF 70 PTSF Status Alarm In Stream Clock Stream Id 0 Priority1 1 Priority2 1 Class 104 Accuracy Unknown Offset log variance 0 Steps Removed 0 ...

Page 198: ...d EXEC command Switch show rep topology segment 1 REP Segment 1 BridgeName PortName Edge Role sw1_multseg_3750 Gi1 1 1 Pri Alt sw3_multseg_3400 Gi0 13 Open sw3_multseg_3400 Gi0 14 Alt sw4_multseg_3400 Gi0 13 Open sw4_multseg_3400 Gi0 14 Open sw5_multseg_3400 Gi0 13 Open sw5_multseg_3400 Gi0 14 Open sw2_multseg_3750 Gi1 1 2 Open sw2_multseg_3750 Gi1 1 1 Open sw1_multseg_3750 Gi1 1 2 Sec Open segmen...

Page 199: ...ogy detail REP Segment 2 repc_2_24ts Fa0 2 Primary Edge Alternate Port some vlans blocked Bridge MAC 0019 e714 5380 Port Number 004 Port Priority 080 Neighbor Number 1 10 repc_3_12cs Gi0 1 Intermediate Open Port all vlans forwarding Bridge MAC 001a a292 3580 Port Number 001 Port Priority 000 Neighbor Number 2 9 repc_3_12cs Po10 Intermediate Open Port all vlans forwarding Bridge MAC 001a a292 3580 ...

Page 200: ...1_multseg_3750 Gi1 1 1 Pri Open sw3_multseg_3400 Gi0 13 Open sw3_multseg_3400 Gi0 14 Open sw4_multseg_3400 Gi0 13 Open sw4_multseg_3400 Gi0 14 Open sw5_multseg_3400 Gi0 13 Open sw5_multseg_3400 Gi0 14 Open sw2_multseg_3750 Gi1 1 2 Alt sw2_multseg_3750 Gi1 1 1 Open sw1_multseg_3750 Gi1 1 2 Sec Open Related Commands Command Description rep segment Enables REP on an interface and assigns a segment ID...

Page 201: ...rom relationship will be set to a default value The following sample output of the show table map command displays the contents of a table map called map1 In this table map a packet marking value of 0 is mapped to a packet marking value of 1 All other packet marking values are mapped to the default value 3 Router show table map map1 Table Map map1 from 0 to 1 default 3 Table 1 11 describes the fie...

Page 202: ...attached to one or more interfaces to specify a service policy show policy map Displays the configuration of all classes for a specified service policy map or all classes for all existing policy maps show policy map class Displays the configuration for the specified class of the specified policy map table map value mapping Creates and configures a mapping table for mapping and converting one packe...

Page 203: ...h VP xconnect information for a specific ATM virtual path identifier VPI This command does not display information about virtual connect VC xconnects using the specified VPI atm number vp vpi value vci value Displays VC xconnect information for a specific ATM VPI and virtual circuit identifier VCI combination serial number Displays xconnect information for a specific serial interface serial number...

Page 204: ... sec ac Et1 0 2 100 Eth VLAN UP mpls 10 55 55 3 1101 UP Table 1 12 describes the significant fields shown in the display The following example shows show xconnect all command output in the detailed display format Table 1 12 show xconnect all Field Descriptions Field Description XC ST State of the xconnect attachment circuit or PW Valid states are UP The xconnect attachment circuit or PW is up Both...

Page 205: ... 55 55 3 1101 UP Interworking none Local VC label 23 Remote VC label 17 pw class mpls The additional fields displayed in the detailed output are self explanatory Related Commands Command Description show atm pvc Displays all ATM PVCs and traffic information show atm vc Displays all ATM PVCs and SVCs and traffic information show atm vp Displays the statistics for all VPs on an interface or for a sp...

Page 206: ...cription Command Modes Global Configuration Command History Usage Guidelines The snmp mib rep trap rate command configures the switch to send REP specific traps to notify the SNMP server of link operational status changes and port role changes Examples The example shows how to configure the switch to send REP specific traps Router config snmp mib rep trap rate 500 value Specifies the number of tra...

Page 207: ...Ethernet interfaces or on a 10 100 1000 Mbps interface that is configured for Gigabit Ethernet Speed Command Syntax Combinations Table 1 1 lists the supported command options by interface When manually configuring the interface speed to either 10 or 100 Mbps the switch prompts you to configure duplex mode on the interface 10 Configures the interface to transmit at 10 Mbps 100 Configures the interf...

Page 208: ...lf duplex capability during autonegotiation Router configure terminal Router config interface gigabitethernet 0 1 Router config if speed 10 Router config if duplex full With this configuration the interface advertises the following capabilities during autonegotiation 10 Mbps and half duplex 10 Mbps and full duplex Related Commands Table 1 14 Relationship Between duplex and speed Commands duplex Co...

Page 209: ...Reference speed show controllers gigabitethernet Displays Gigabit Ethernet interface information transmission statistics and errors and applicable MAC destination address and VLAN filtering tables show interfaces gigabitethernet Displays information about the Gigabit Ethernet interfaces Command Description ...

Page 210: ...ion This command has no arguments Command Default None Command Modes Interface configuration Command History Usage Guidelines The synce state master command configures the synchronous ethernet copper port as the master in the interface configuration mode Examples The following command configures the ethernet copper port as master Router config if synce state master Related Commands Release Modific...

Page 211: ...This command has no arguments Command Default None Command Modes Interface configuration mode Command History Usage Guidelines The synce state slave command configures the synchronous ethernet copper port as the slave in the interface configuration mode Examples The following command configures the ethernet copper port as slave Router config if synce state slave Related Commands Release Modificati...

Page 212: ...e the configuration synchronous mode no synchronous mode Command Default Asynchronous mode Command Modes Interface configuration Command History Usage Guidelines This command is applicable to Synchronous Ethernet capable interfaces The default value is asynchronous mode Examples This example configures the ethernet interface to synchronous mode Router config if synchronous mode Release Modificatio...

Page 213: ...t the tag name and the route metric to implement redistribution You can use match clauses of route maps in the table map command IP access list autonomous system paths and next hop match clauses are supported Examples In the following router configuration mode example the Cisco IOS software is configured to automatically compute the tag value for the BGP learned routes and to update the IP routing...

Page 214: ...er in address family configuration mode for configuring routing sessions such as BGP RIP or static routing sessions that use standard VPN Version 4 address prefixes match as path Matches a BGP autonomous system path access list match ip address Distributes any routes that have a destination network number address that is permitted by a standard or extended access list and performs policy routing o...

Page 215: ...on Command History Examples The following example shows how to use the termination command Router configure terminal Router config controller shdsl2 0 Router config controller equipment type co Related Commands co The WIC functions as central office equipment and can interface with another G SHDSL WIC configured as cpe cpe The WIC functions as customer premises equipment and can interface with a D...

Page 216: ...rt transport ipv4 unicast interface loopback 23 negotiation Router config ptp port exit Router config ptp clk exit Related Commands unicast Specifies that the router sends unicast PTP traffic multicast Specifies that the router sends multicast PTP traffic interface Specifies the interface used to send PTP traffic slot port Backplane slot number and port number on the interface Refer to your hardwa...

Page 217: ...on Command Default This configuration is disabled by default Command Modes Global configuration config Command History Usage Guidelines This command is used only on the Gigabit Ethernet interfaces Use this command to avoid traffic drops that occur due to congestion as a result of formation of micro loops during link recovery Examples The following example shows how to avoid traffic drops Router co...

Page 218: ...figuration Command History Usage Guidelines Use this command to enable syslog reporting of the status of the xconnect redundancy group Examples The following example enables syslog reporting of the status of the xconnect redundancy group and shows the messages that are generated during switchover events Router config t Router config xconnect logging redundancy Router config exit Activating the Pri...

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