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Configuring the Cisco NM-1A-T3/E3 Network Module

Recommendations for Watermark Settings

17

Cisco IOS Release 12.4(15)T

Traffic Pattern

•

The following pageant configuration was used in bi-directional way for continuous burst on traffic
streams:
packet length - 300 bytes and 1400 bytes:

–

For 300 bytes data traffic from pageant, the following rates were used:
350 for 1 Mbps; 700 for 2 Mbps; 1750 for 5 Mbps; and 3500 for 10 Mbps

–

For 1400 bytes data traffic from pageant, the following rates were used:
150 for 1 Mbps; 300 for 2 Mbps; 750 for 5 Mbps; and 1500 for 10 Mbps

•

IXIA was used for pumping UDP bi-directional unicast streams for simulating racing condition.

•

Average latency is calculated based on two to three minutes of traffic from IXIA; Latency might
differ based on the drop rate of data traffic.

•

1500 bytes (data) was not used due to ATM cell conversion overhead.

•

64B frame size IXIA traffic streams includes CRC.

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Содержание NM-1A-E3

Страница 1: ...tion over ATM adaptive layer 5 AAL5 segmentation RFC 1483 Point to Point Protocol PPP over ATM LAN Emulation LANE Finding Feature Information in This Module Your Cisco IOS software release may not support all the features documented in this module To reach links to specific feature documentation in this module and to see a list of the releases in which each feature is supported see the Feature Inf...

Страница 2: ...ported on the ATM T3 E3 network module Information About the Cisco ATM T3 E3 Network Module To configure the Cisco ATM T3 E3 network module you should understand the following ATM page 2 Permanent Virtual Circuits page 3 Switched Virtual Circuits page 3 Classes of Service page 4 ATM ATM is an International Telecommunication Union Telecommunications Standards Section ITU T standard for cell relay w...

Страница 3: ...ome ATM switches might have point to multipoint PVCs that do the equivalent of broadcasting A point to multipoint PVC can be used as the sole broadcast PVC for all multicast requests These switching features can be turned off by using interface configuration commands Flow must be explicitly enabled for each interface Switched Virtual Circuits ATM switched virtual circuit SVC service operates much ...

Страница 4: ...of user information Available Bit Rate ABR ABR has the transport priority of 2 ABR provides rate based flow control and is aimed at data traffic Unspecified Bit Rate UBR UBR has the transport priority of 3 UBR is a best effort class of service that uses the unutilized bandwidth for a connection Traffic categorized as UBR is guaranteed a minimum line rate through the minimum cell rate MCR traffic p...

Страница 5: ...tasks SUMMARY STEPS 1 enable 2 configure terminal 3 no card type t3 e3 4 card type t3 e3 slot 5 reload Command or Action Purpose Step 1 enable Example Router enable Enables privileged EXEC mode Enter your password if prompted Step 2 configure terminal Example Router configure terminal Enters global configuration mode Step 3 card type t3 e3 slot Example Router config card type t3 1 Specifies T3 or ...

Страница 6: ...Mbps and the card type is changed from T3 to E3 the traffic shaping characteristics of the VCs will be changed The Cisco IOS software will reconfigure the VCs so that the total allocated guaranteed bandwidth does not exceed the maximum allowable E3 bandwidth Command or Action Purpose Step 1 enable Example Router enable Enables privileged EXEC mode Enter your password if prompted Step 2 configure t...

Страница 7: ...rform these tasks Creating a PVC Mapping a Protocol Address to a PVC Configuring the AAL and Encapsulation Type Configuring PVC Traffic Parameters Setting PVC Watermarks page 10 Command or Action Purpose Step 1 interface ATM slot Example Router config interface ATM 1 Enters interface configuration mode Step 2 atm clock internal Example Router config if atm clock internal Mandatory if the ATM port ...

Страница 8: ...is section describes how to map a PVC to an address which is a required task for configuring a PVC To map a protocol address to a PVC use the following command in interface ATM VC configuration mode Note If you enable or disable broadcasting directly on a PVC by using the protocol command this broadcasting configuration will take precedence over any direct configuration made using the broadcast co...

Страница 9: ... use one of the following commands beginning in interface ATM VC configuration mode Command Purpose Router config if atm vc encapsulation aal2 aal5auto aal5autoppp virtual template number group group name aal5ciscoppp virtual template number aal5mux protocol aal5nlpid aal5snap Example Router config if atm vc encapsulation aal5auto Configures the ATM adaptation layer AAL and encapsulation type on t...

Страница 10: ...tency shaping and throughput on the PVCs use the following command in interface ATM VC configuration mode Router config if atm vc vbr rt peak rate average rate burst Example Router config if atm vc vbr rt 10000 3000 64 Configures real time VBR Router config if atm vc cbr rate Example Router config if atm vc cbr 10000 Configures CBR Command Purpose Command Purpose Router config if atm vc atm abr ra...

Страница 11: ...e configuration mode Note This ILMI PVC can be set up only on an ATM main interface not on ATM subinterfaces Once you have configured an ILMI PVC you can optionally enable the ILMI keepalive function by using the following command in interface configuration mode No other configuration steps are required ILMI address registration for receipt of SNMP traps and new network prefixes is enabled by defa...

Страница 12: ...wo SVCs This is a fully meshed network workstations A B and C can all communicate with each other Figure 1 SVCs within a signaling PVC To configure the signaling PVC for all SVC connections use the following command in interface configuration mode Note This signaling PVC can be set up only on an ATM main interface not on ATM subinterfaces The VPI and VCI values must be configured consistently with...

Страница 13: ...ix 26 hexadecimal characters is provided by the ATM switch To configure the router to obtain the NSAP prefix from the switch and use locally entered values for the remaining fields of the address use the following commands beginning in interface configuration mode SUMMARY STEPS 1 pvc name 0 16 ilmi 2 exit 3 atm esi address esi selector DETAILED STEPS The atm nsap address and atm esi address comman...

Страница 14: ...ring the no svc name command For a list of AAL types and encapsulations see the section Configuring the AAL and Encapsulation Type Command Purpose Step 1 Router config if svc name nsap address Example Router config if svc cisco nsap 47 0091 81 000000 0040 0B0A 2501 ABC1 3333 3333 05 Creates an SVC and specifies the destination NSAP address Step 2 Router config if atm vc encapsulation aal5encap Exa...

Страница 15: ...e supports different framing types when it is configured as a T3 connection or an E3 connection To configure T3 ATM framing on the T3 E3 network module enter the following command in interface configuration mode The no form of this command removes T3 ATM framing To configure E3 ATM framing on the ATM T3 E3 network module use the following command in interface configuration mode The no form of this...

Страница 16: ...s recommendations for watermark settings on the ATM T3 E3 module with a single VC For information about the traffic pattern used to test the watermark settings recommendations see Traffic Pattern page 17 For an example of the router configuration see Example of the Router Configuration Used for Watermark Testing page 18 Command Purpose Router config if loopback Sets loopback mode Command Purpose R...

Страница 17: ... 350 for 1 Mbps 700 for 2 Mbps 1750 for 5 Mbps and 3500 for 10 Mbps For 1400 bytes data traffic from pageant the following rates were used 150 for 1 Mbps 300 for 2 Mbps 750 for 5 Mbps and 1500 for 10 Mbps IXIA was used for pumping UDP bi directional unicast streams for simulating racing condition Average latency is calculated based on two to three minutes of traffic from IXIA Latency might differ ...

Страница 18: ...etect dscp 0 901 1200 10 service policy Child_Map2 interface GigabitEthernet0 0 ip address 110 0 0 2 255 255 255 0 load interval 30 duplex auto speed auto media type rj45 interface GigabitEthernet0 1 ip address 20 0 0 1 255 0 0 0 load interval 30 duplex auto speed auto media type rj45 class map match any COSQ_NBIP_LABS_TC1_COS4 match any class map match any COSP_NBIP_LABS_TC1_COS4 match any class ...

Страница 19: ...ded EF_QUEUE_IPV4_TC1 permit udp any eq 5060 any permit udp any any eq 5060 deny ip any 120 0 0 0 0 0 0 255 interface ATM1 0 mtu 1500 bandwidth 5000 no ip address ip virtual reassembly load interval 30 atm scrambling cell payload no atm ilmi keepalive interface ATM1 0 1 point to point ip address 195 18 18 2 255 255 255 0 ip virtual reassembly pvc 1 313 vbr nrt 10000 10000 1 vc hold queue 2048 oam ...

Страница 20: ...t the following URL http www cisco com go mibs RFC Title No new or modified RFCs are supported by this feature and support for existing RFCs have not been modified by this feature Description Link The Cisco Support website provides extensive online resources including documentation and tools for troubleshooting and resolving technical issues with Cisco products and technologies To receive security...

Страница 21: ...hen traffic sent to the SAR exceeds the peak cell rate for a particular virtual circuit VC the SAR indicates this to the host by sending flow control indications These indications inform the host that either the high watermark or the low watermark has been reached for that VC queue When a high watermark is received from the SAR indicating that the VC queue is full the host will stop sending packet...

Страница 22: ...ample output from the debug atm t3e3 data command Router debug atm t3e3 data DATA debugging is on Router Jun 27 22 03 17 996 Packet Indication Jun 27 22 03 17 996 word 0 0x00007D24 Jun 27 22 03 17 996 word 1 0x00002F02 Jun 27 22 03 17 996 word 2 0xEE323464 Jun 27 22 03 17 996 word 3 0x006C006D Table 3 describes the significant fields shown in the display Example for the debug atm t3e3 flow command...

Страница 23: ...000000 Jun 27 22 41 11 402 PCI_COMMAND_REG Offset 0x4 value 0x2A00006 Jun 27 22 41 11 402 FPGA Base address is 0x5C900000 Jun 27 22 41 11 402 FPGA PCI config Reg is 0x02200002 Examples for the debug atm t3e3 sar command The following examples illustrate the output from the debug atm t3e3 sar command The first example displays command indications for setting up a VC and opening the reassembly chann...

Страница 24: ...ACK debugging is on Router configure terminal Router config interface atm 2 0 router config if pvc 2 2 Router config if atm vc exit Router config if Jun 27 22 15 09 284 Command Sent Jun 27 22 15 09 284 word 0 0x00000480 Jun 27 22 15 09 284 word 1 0x00012010 Jun 27 22 15 09 284 word 2 0x00000000 Jun 27 22 15 09 284 word 3 0x00000000 Jun 27 22 15 09 284 word 4 0x00200020 Jun 27 22 15 09 284 word 5 0...

Страница 25: ...00000 Jun 27 22 15 09 284 word 4 0x00200020 Jun 27 22 15 09 284 word 5 0x00000000 Jun 27 22 15 09 284 word 6 0x00000000 Jun 27 22 15 09 284 word 7 0x00000000 Jun 27 22 15 09 284 word 8 0x00000000 Jun 27 22 15 09 284 Command Indication Jun 27 22 15 09 284 word 0 0x00000000 Jun 27 22 15 09 284 word 1 0x01042110 Jun 27 22 15 09 284 word 2 0x01050000 Jun 27 22 15 09 284 word 3 0x0000003B Jun 27 22 15 ...

Страница 26: ...see the command reference documentation Use Cisco Feature Navigator to find information about platform support and software image support Cisco Feature Navigator enables you to determine which Cisco IOS and Catalyst OS software images support a specific software release feature set or platform To access Cisco Feature Navigator go to http www cisco com go cfn An account on Cisco com is not required...

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