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4-17

The output indicates that both GigabitEthernet 1/0/50 and GigabitEthernet 1/0/51 are in Advertisement

state, which means both links are bidirectional.

# Enable system information monitoring on Device A, and enable the display of log and trap

information.

[DeviceA] quit

<DeviceA> terminal monitor

<DeviceA> terminal logging

<DeviceA> terminal trapping

The following log and trap information is displayed on Device A:

#Jan 18 17:36:18:798 2010 DeviceA DLDP/1/TrapOfUnidirectional: -Slot=1;

h3cDLDPUnidirectionalPort : DLDP detects a unidirectional link in port 17825792.

%Jan 18 17:36:18:799 2010 DeviceA IFNET/3/LINK_UPDOWN: GigabitEthernet1/0/50 link status

is DOWN.

%Jan 18 17:36:18:799 2010 DeviceA DLDP/3/DLDP_UNIDIRECTION_AUTO: -Slot=1; DLDP detects a

unidirectional link on port GigabitEthernet1/0/50. The transceiver has malfunction in the

Tx direction or cross-connected links exist between the local device and its neighbor. The

shutdown mode is AUTO. DLDP shuts down the port.

#Jan 18 17:36:20:189 2010 DeviceA DLDP/1/TrapOfUnidirectional: -Slot=1;

h3cDLDPUnidirectionalPort : DLDP detects a unidirectional link in port 17825793.

%Jan 18 17:36:20:189 2010 DeviceA IFNET/3/LINK_UPDOWN: GigabitEthernet1/0/51 link status

is DOWN.

%Jan 18 17:36:20:190 2010 DeviceA DLDP/3/DLDP_UNIDIRECTION_AUTO: -Slot=1; DLDP detects a

unidirectional link on port GigabitEthernet1/0/51. The transceiver has malfunction in the

Tx direction or cross-connected links exist between the local device and its neighbor. The

shutdown mode is AUTO. DLDP shuts down the port.

%Jan 15 16:54:56:040 2010 DeviceA DLDP/3/DLDP_UNIDIRECTION_AUTO_ENHANCE: -Slot=1; In

enhanced DLDP mode, port GigabitEthernet1/0/50 cannot detect its aged-out neighbor. The

transceiver has malfunction in the Tx direction or cross-connected links exist between the

local device and its neighbor. The shutdown mode is AUTO. DLDP shuts down the port.

The output above indicates that the link status of both GigabitEthernet 1/0/50 and GigabitEthernet

1/0/51 is down, and DLDP has detected a unidirectional link on both ports and has automatically shut

them down.

Assume that in this example, the unidirectional links are caused by cross-connected fibers. Correct

the fiber connections on detecting the unidirectional link problem. As a result, the ports shut down by

DLDP automatically recover, and Device A displays the following log information:

%Jan 18 17:47:33:869 2010 DeviceA IFNET/3/LINK_UPDOWN: GigabitEthernet1/0/50 link status

is UP.

%Jan 18 17:47:35:894 2010 DeviceA IFNET/3/LINK_UPDOWN: GigabitEthernet1/0/51 link status

is UP.

The output above indicates that the link status of both GigabitEthernet 1/0/50 and GigabitEthernet

1/0/51 is now up.

Manually Shutting Down Unidirectional Links

Network requirements

As shown in

Figure 4-4

, Device A and Device B are connected with two fiber pairs.

Содержание S5500-SI Series

Страница 1: ...H3C S5500 SI Series Ethernet Switches High Availability Configuration Guide Hangzhou H3C Technologies Co Ltd http www h3c com Document Version 20100722 C 1 03 Product Version Release 2202...

Страница 2: ...ware Secware Storware NQA VVG V2 G Vn G PSPT XGbus N Bus TiGem InnoVision and HUASAN are trademarks of Hangzhou H3C Technologies Co Ltd All other trademarks that may be mentioned in this manual are th...

Страница 3: ...aining Documentation z Documentation Feedback Audience This documentation set is intended for z Network planners z Field technical support and servicing engineers z Network administrators working with...

Страница 4: ...ion Description Means reader be extremely careful Improper operation may cause bodily injury Means reader be careful Improper operation may cause data loss or damage to equipment Means a complementary...

Страница 5: ...covery Manual Tells how to find the lost password or recover the password when the login password is lost Operations and maintenance Release notes Provide information about the product release includi...

Страница 6: ...ion 2 7 Configuring Errored Frame Event Detection 2 8 Configuring Errored Frame Period Event Detection 2 8 Configuring Errored Frame Seconds Event Detection 2 8 Enabling OAM Remote Loopback 2 9 Displa...

Страница 7: ...1 Setting the DelayDown Timer 4 11 Setting the Port Shutdown Mode 4 12 Configuring DLDP Authentication 4 12 Resetting DLDP State 4 13 Displaying and Maintaining DLDP 4 14 DLDP Configuration Examples 4...

Страница 8: ...of Flush Messages 6 43 Displaying and Maintaining Smart Link 6 43 Smart Link Configuration Examples 6 44 Single Smart Link Group Configuration Example 6 44 Multiple Smart Link Groups Load Sharing Conf...

Страница 9: ...iv Displaying and Maintaining Track Object s 8 4 Track Configuration Examples 8 4 Static Routing Track NQA Collaboration Configuration Example 8 4 9 Index 9 1...

Страница 10: ...ect system functions from being affected if faults occur Device and link redundancy and deployment of switchover strategies 3 Enable the system to recover fast even if system functions are affected Pr...

Страница 11: ...ork along with other high availability technologies to detect faults through a collaboration mechanism See Table 1 2 for the details of these technologies Table 1 2 Fault detection technologies Techno...

Страница 12: ...orm certain operations through the track module More specifically the detection modules probe the link status network performance and so on and inform the application modules of the detection result t...

Страница 13: ...gs RRPP can prevent broadcast storms caused by data loops when an Ethernet ring is healthy and rapidly restore the communication paths between the nodes in the event that a link is disconnected on the...

Страница 14: ...en absent all along hindering the usage of Ethernet in MANs and WANs Implementing Operation Administration and Maintenance OAM on Ethernet networks has now become an urgent matter As a tool monitoring...

Страница 15: ...be forwarded Source addr Source MAC address of the Ethernet OAMPDU It is the bridge MAC address of the sending side and is a unicast MAC address Type Type of the encapsulated protocol in the Ethernet...

Страница 16: ...and establishes sessions with them In this phase interconnected OAM entities notify the peer of their OAM configuration information and the OAM capabilities of the local nodes by exchanging Informati...

Страница 17: ...ially when the physical connection in the network is not disconnected but network performance is degrading gradually Link monitoring is used to detect and indicate link faults in various environments...

Страница 18: ...frames appear in a certain second this second is called an errored frame second Remote fault detection Information OAMPDUs are exchanged periodically among Ethernet OAM entities across established OAM...

Страница 19: ...peer After receiving these PDUs the peer does not forward them according to their destination addresses Instead it returns them to the sender along the original path Remote loopback enables you to ch...

Страница 20: ...e default is active Ethernet OAM mode Enable Ethernet OAM on the current port oam enable Required Ethernet OAM is disabled by default To change the Ethernet OAM operating mode on an Ethernet OAM enabl...

Страница 21: ...the errored frame event triggering threshold oam errored frame threshold threshold value Optional 1 by default Configuring Errored Frame Period Event Detection An errored frame period event occurs if...

Страница 22: ...l Otherwise no errored frame seconds event can be generated Enabling OAM Remote Loopback After enabling OAM remote loopback on a port you can send loopback frames from the port to a remote port and th...

Страница 23: ...s For more information about link aggregation groups refer to Ethernet Link Aggregation Configuration in the Layer 2 LAN Switching Configuration Guide z Enabling internal loopback test on a port in re...

Страница 24: ...and set the errored frame event triggering threshold to 10 DeviceA oam errored frame period 20 DeviceA oam errored frame threshold 10 2 Configure Device B Configure GigabitEthernet 1 0 1 to operate i...

Страница 25: ...nt statistic Link Fault 0 Dying Gasp 0 Critical Event 0 According to the above output information no critical link event occurred on the link between Device A and Device B You can use the display oam...

Страница 26: ...e The MD boundary is defined by some maintenance association end points MEPs configured on the ports An MD is identified by an MD name To accurately locate faults CFD introduces eight levels from 0 to...

Страница 27: ...sociation end points MEPs and maintenance association intermediate points MIPs z MEP Each MEP is identified by an integer called a MEP ID The MEPs of an MD define the range and boundary of the MD The...

Страница 28: ...ure 3 4 demonstrates a grading example of the CFD module In the figure there are six devices labeled A through F respectively Suppose each device has two ports and MEPs and MIPs are configured on some...

Страница 29: ...erified LBMs and LBRs are unicast messages They are used to verify the connectivity between two points Linktrace Linktrace is responsible for identifying the path between the source MEP and the destin...

Страница 30: ...d as an outward facing MEP it can still receive and send CCM messages even if it is blocked by STP z Only Ethernet ports support CFD Basic Configuration Tasks Basic configuration tasks include z Confi...

Страница 31: ...mplemented through operations on MEPs which provides such functions as CC LB LT and gives prompts on error CCMs and cross connections As a MEP is configured on a service instance the MD level and VLAN...

Страница 32: ...low to high levels and follow the procedure described in Figure 3 5 to create or not to create MIPs within the same VLAN Figure 3 5 Procedure of creating MIPs You can choose appropriate MIP generation...

Страница 33: ...tion is configured MEPs can send CCM frames to one another to check the connectivity between them You must configure CC before configuring other CFD functions Follow these steps to configure CC on a M...

Страница 34: ...e configuring this function you should first complete the MEP and MIP configuration tasks Configuration Procedure Follow these steps to configure LB on MEP To do Use the command Remarks Enter system v...

Страница 35: ...tance instance id mep mep id target mep target mep id target mac mac address ttl ttl value hw only Required Enabling Automatic LT Messages Sending Follow these steps to enable automatic LT messages se...

Страница 36: ...figuring Service Instance Network requirements As shown in Figure 3 6 there are five devices in the MDs Each device has four ports belonging to VLAN 100 The light blue square frame and the blue one sp...

Страница 37: ...B DeviceB system view DeviceB cfd enable DeviceB cfd md MD_A level 5 DeviceB cfd ma MA_MD_A md MD_A vlan 100 DeviceB cfd service instance 1 md MD_A ma MA_MD_A DeviceB cfd md MD_B level 3 DeviceB cfd...

Страница 38: ...1001 DeviceA GigabitEthernet1 0 1 cfd remote mep 4002 service instance 1 mep 1001 DeviceA GigabitEthernet1 0 1 cfd mep service instance 1 mep 1001 enable DeviceA GigabitEthernet1 0 1 cfd cc service in...

Страница 39: ...twork requirements After finishing MEP configuration you can continue to configure the MIPs MIPs which are generated by some rules are configured in the following way z Decide the device on which MIPs...

Страница 40: ...wn in Figure 3 7 enable LB on Device A so that Device A can send LBM messages to MEPs on Device D Configuration procedure Configure Device A DeviceA system view DeviceA cfd loopback service instance 1...

Страница 41: ...he other end but the other end cannot For example if two switches Switch A and Switch B are connected via a fiber pair one used for sending packets from A to B and the other for sending packets from B...

Страница 42: ...evices detecting unidirectional links and shutting down unreachable ports The cooperation of the auto negotiation mechanism and DLDP ensures that physical logical unidirectional links can be detected...

Страница 43: ...t in the Active Advertisement or Probe DLDP link state transits to this state rather than removes the corresponding neighbor entry and transits to the Inactive state when it detects a port down event...

Страница 44: ...ceived from a neighbor when the entry timer expires Enhanced timer is set to 1 second After the Enhanced timer is triggered the device sends up to eight probe packets to the neighbor at a frequency of...

Страница 45: ...s still up In enhanced DLDP mode however the port on Device A tests the peer port on Device B after the Entry timer concerning the port on Device B expires The port on Device A then transits to the Di...

Страница 46: ...the Authentication field and sets the Authentication type field to 2 The receiving side checks the values of the two fields of received DLDP packets and drops the packets with the two fields conflicti...

Страница 47: ...the corresponding neighbor entry does not exist creates the neighbor entry transits to Probe state and returns Echo packets Probe packet Retrieves the neighbor information If the corresponding neighb...

Страница 48: ...and removes the corresponding neighbor entry Link auto recovery mechanism If the port shutdown mode upon detection of a unidirectional link is set to auto DLDP sets the state of the port where a unid...

Страница 49: ...this state the corresponding neighbor entries maintained on other devices are removed DLDP Configuration Task List Complete the following tasks to configure DLDP Task Remarks Enabling DLDP Required Se...

Страница 50: ...default z DLDP takes effect only on Ethernet interfaces optical or copper z DLDP can detect unidirectional links only after all physical links are connected Therefore before enabling DLDP make sure th...

Страница 51: ...al 5 seconds by default z The interval to send Advertisement packets applies to all DLDP enabled ports z To enable DLDP to operate properly make sure the intervals to send Advertisement packets on bot...

Страница 52: ...down mode dldp unidirectional shutdown auto manual Optional auto by default z On a port with both remote OAM loopback and DLDP enabled if the port shutdown mode is auto mode the port will be shut down...

Страница 53: ...ch automatically enables the port upon detecting that the link has been restored to bidirectional For how to reset DLDP state with the dldp reset command see Resetting DLDP state in system view and Re...

Страница 54: ...a port display dldp interface type interface number Available in any view Display the statistics on DLDP packets passing through a port display dldp statistics interface type interface number Availabl...

Страница 55: ...le DLDP on the port DeviceA interface gigabitethernet 1 0 50 DeviceA GigabitEthernet1 0 50 duplex full DeviceA GigabitEthernet1 0 50 speed 1000 DeviceA GigabitEthernet1 0 50 dldp enable DeviceA Gigabi...

Страница 56: ...onal shutdown auto 3 Verifying the configurations After the configurations are complete you can use the display dldp command to display the DLDP configuration information on ports Display the DLDP con...

Страница 57: ...tional link on port GigabitEthernet1 0 51 The transceiver has malfunction in the Tx direction or cross connected links exist between the local device and its neighbor The shutdown mode is AUTO DLDP sh...

Страница 58: ...0 50 to operate in full duplex mode configure the port rate as 1000 Mbps and enable DLDP on the port DeviceA interface gigabitethernet 1 0 50 DeviceA GigabitEthernet1 0 50 duplex full DeviceA Gigabit...

Страница 59: ...dp unidirectional shutdown manual 3 Verifying the configurations After the configurations are complete you can use the display dldp command to display the DLDP configuration information on ports Displ...

Страница 60: ...t between the local device and its neighbor The shutdown mode is MANUAL The port needs to be shut down by the user The output above indicates that DLDP has detected a unidirectional link on both Gigab...

Страница 61: ...through two fiber pairs in which two fibers are cross connected The unidirectional links cannot be detected all the four ports involved are in Advertisement state Analysis The problem can be caused by...

Страница 62: ...onnected on the ring Background Metropolitan area networks MANs and enterprise networks usually use the ring structure to improve reliability However services will be interrupted if any node in the ri...

Страница 63: ...physical links on the Ethernet ring are connected z Disconnect state Some physical links on the Ethernet ring are broken As shown in Figure 5 1 Domain 1 contains two RRPP rings Ring 1 and Ring 2 The...

Страница 64: ...y ring and perform loop guard As shown in Figure 5 1 Ring 1 is the primary ring and Ring 2 is a subring Device A is the master node of Ring 1 Device B Device C and Device D are the transit nodes of Ri...

Страница 65: ...group configured on the edge node is called an edge node RRPP ring group and an RRPP ring group configured on an assistant edge node is called an assistant edge node RRPP ring group Up to one subring...

Страница 66: ...ts out the primary port and the secondary port receiving the Hello packets from the primary port If the secondary port receives the Hello packets sent by the local master node before the Fail timer ex...

Страница 67: ...nly when the nodes are sure that no loop will be brought forth by these ports Broadcast storm suppression mechanism in a multi homed subring in case of SRPT failure As shown in Figure 5 5 Ring 1 is th...

Страница 68: ...llo packets frequently If more subrings are configured or load balancing is configured for more multiple domains Device B and Device C will send or receive a mass of Edge Hello packets To reduce Edge...

Страница 69: ...efine an RRPP domain and configure one ring as the primary ring and the other rings as subrings Figure 5 4 Schematic diagram for an intersecting ring network Dual homed rings As shown in Figure 5 5 th...

Страница 70: ...ingle ring load balancing is achieved Figure 5 6 Schematic diagram for a single ring load balancing network Domain 1 Ring 1 Device A Device B Device D Device C Domain 2 Intersecting ring load balancin...

Страница 71: ...ANs for each RRPP domain and then determine the ring roles and node roles based on the traffic paths in each RRPP domain Complete the following tasks to configure RRPP Task Remarks Creating an RRPP Do...

Страница 72: ...niquely identifies an RRPP domain All devices in the same RRPP domain must be configured with the same domain ID Make this configuration on devices you want to configure as nodes in the RRPP domain Fo...

Страница 73: ...o into the control VLANs in transparent transmission mode and strike the RRPP ring Configuring Protected VLANs Before configuring RRPP rings in an RRPP domain configure the same protected VLANs for al...

Страница 74: ...nfiguring RRPP Ports Perform this configuration on each node s ports intended for accessing RRPP rings Follow these steps to configure RRPP ports To do Use the command Remarks Enter system view system...

Страница 75: ...cause temporary broadcast storm z You are recommended not to configure physical link state change suppression time on a port accessing an RRPP ring to accelerate topology convergence For more informat...

Страница 76: ...y port interface type interface number secondary port interface type interface number level level value Required Specifying an edge node When configuring an edge node you must first configure the prim...

Страница 77: ...interface number secondary port interface type interface number level level value Required Specify the current device as the assistant edge node of the subring and specify an edge port ring ring id no...

Страница 78: ...the Hello timer and Fail timer for the RRPP domain timer hello timer hello value fail timer fail value Required By default the Hello timer value is 1 second and the Fail timer value is 3 seconds z The...

Страница 79: ...and assistant edge node and the edge node and the assistant edge node have the same SRPTs z Ensure that a device plays the same role on the subrings in an RRPP ring group The role can be the edge node...

Страница 80: ...e B Device C and Device D as the transit nodes of primary ring 1 their GigabitEthernet 1 0 1 as the primary port and GigabitEthernet 1 0 2 as the secondary port Figure 5 8 Network diagram for single r...

Страница 81: ...pp enable 2 Configuration on Device B Disable physical state change suppression and STP on GigabitEthernet 1 0 1 and GigabitEthernet 1 0 2 configure the two ports as trunk ports and assign them to all...

Страница 82: ...working requirements As shown in Figure 5 9 z Device A Device B Device C Device D and Device E constitute RRPP domain 1 VLAN 4092 is the primary control VLAN of RRPP domain 1 and RRPP domain 1 protect...

Страница 83: ...iceA GigabitEthernet1 0 2 undo link delay DeviceA GigabitEthernet1 0 2 undo stp enable DeviceA GigabitEthernet1 0 2 port link type trunk DeviceA GigabitEthernet1 0 2 port trunk permit vlan all DeviceA...

Страница 84: ...eB GigabitEthernet1 0 3 undo link delay DeviceB GigabitEthernet1 0 3 undo stp enable DeviceB GigabitEthernet1 0 3 port link type trunk DeviceB GigabitEthernet1 0 3 port trunk permit vlan all DeviceB G...

Страница 85: ...port trunk permit vlan all DeviceC GigabitEthernet1 0 3 qos trust dot1p DeviceC GigabitEthernet1 0 3 quit Create RRPP domain 1 configure VLAN 4092 as the primary control VLAN of RRPP domain 1 and con...

Страница 86: ...he primary port and GigabitEthernet 1 0 2 as the secondary port and enable ring 1 DeviceD rrpp domain1 ring 1 node mode transit primary port gigabitethernet 1 0 1 secondary port gigabitethernet 1 0 2...

Страница 87: ...F constitute RRPP domain 1 and VLAN 100 is the primary control VLAN of the RRPP domain Device A is the master node of the primary ring Ring 1 Device D is the transit node of the primary ring Ring 1 D...

Страница 88: ...TP on GigabitEthernet 1 0 1 and GigabitEthernet 1 0 2 configure the two ports as trunk ports and assign them to VLAN 10 and VLAN 20 and configure them to trust the 802 1p precedence of the received pa...

Страница 89: ...gabitEthernet 1 0 2 as the master port and GigabitEthernet 1 0 1 as the secondary port and enable ring 1 DeviceA rrpp domain2 ring 1 node mode master primary port gigabitethernet 1 0 2 secondary port...

Страница 90: ...DeviceB GigabitEthernet1 0 4 undo stp enable DeviceB GigabitEthernet1 0 4 port link type trunk DeviceB GigabitEthernet1 0 4 port trunk permit vlan 10 DeviceB GigabitEthernet1 0 4 qos trust dot1p Devi...

Страница 91: ...viceC mst region active region configuration DeviceC mst region quit Disable physical state change suppression and STP on GigabitEthernet 1 0 1 and GigabitEthernet 1 0 2 configure the two ports as tru...

Страница 92: ...2 as the secondary port and enable ring 1 DeviceC rrpp domain1 ring 1 node mode transit primary port gigabitethernet 1 0 1 secondary port gigabitethernet 1 0 2 level 0 DeviceC rrpp domain1 ring 1 ena...

Страница 93: ...thernet 1 0 2 DeviceD GigabitEthernet1 0 2 undo link delay DeviceD GigabitEthernet1 0 2 undo stp enable DeviceD GigabitEthernet1 0 2 port link type trunk DeviceD GigabitEthernet1 0 2 port trunk permit...

Страница 94: ...net1 0 1 undo link delay DeviceE GigabitEthernet1 0 1 undo stp enable DeviceE GigabitEthernet1 0 1 port link type trunk DeviceE GigabitEthernet1 0 1 port trunk permit vlan 20 DeviceE GigabitEthernet1...

Страница 95: ...type trunk DeviceF GigabitEthernet1 0 2 port trunk permit vlan 10 DeviceF GigabitEthernet1 0 2 qos trust dot1p DeviceF GigabitEthernet1 0 2 quit Create RRPP domain 1 configure VLAN 100 as the primary...

Страница 96: ...the nodes in the same RRPP ring z Some ports are abnormal Solution z Use the display rrpp brief command to check whether RRPP is enabled for all nodes If not use the rrpp enable command and the ring e...

Страница 97: ...m device connects to two different upstream devices as shown in Figure 6 1 Figure 6 1 Diagram for a dual uplink network Device A Device E Device D Device C Device B Core network Port1 Port2 Port1 Port...

Страница 98: ...to port shutdown or presence of unidirectional link for example the standby port becomes active to take over while the original active port transits to the blocked state As shown in Figure 6 1 Port1 a...

Страница 99: ...e while Port2 is in the standby state When the master link fails Port2 takes over to forward traffic while Port1 is blocked and placed in the standby state z When a port switches to the forwarding sta...

Страница 100: ...ong different paths You can configure protected VLANs for a smart link group by referencing MSTIs Smart Link Collaboration Mechanisms Smart Link cannot sense by itself when faults occur on the uplink...

Страница 101: ...ou can bring up the port only after completing the smart link group configuration z Disable STP and RRPP on the ports you want to add to the smart link group and make sure that the ports are not membe...

Страница 102: ...k group in smart link group view To do Use the command Remarks Enter system view system view Create a smart link group and enter smart link group view smart link group group id Configure member ports...

Страница 103: ...Enter system view system view Create a smart link group and enter smart link group view smart link group group id Required Enable flush update in the specified control VLAN flush enable control vlan...

Страница 104: ...ages z If no control VLAN is specified for processing flush messages the device forwards the received flush messages without processing them z Make sure that the receive control VLAN is the same as th...

Страница 105: ...onfiguration on Device C Create VLANs 1 through 30 map these VLANs to MSTI 1 and activate the MST region configuration DeviceC system view DeviceC vlan 1 to 30 DeviceC stp region configuration DeviceC...

Страница 106: ...ly and configure them as trunk ports that permit VLANs 1 through 30 DeviceD interface gigabitethernet 1 0 1 DeviceD GigabitEthernet1 0 1 undo stp enable DeviceD GigabitEthernet1 0 1 port link type tru...

Страница 107: ...ports that permit VLANs 1 through 30 and enable flush message receiving on them DeviceE interface gigabitethernet 1 0 1 DeviceE GigabitEthernet1 0 1 port link type trunk DeviceE GigabitEthernet1 0 1 p...

Страница 108: ...E STANDBY 1 17 45 20 2009 02 21 You can use the display smart link flush command to display the flush messages received on each device For example Display the flush messages received on Device B Devic...

Страница 109: ...ceC GigabitEthernet1 0 1 port link type trunk DeviceC GigabitEthernet1 0 1 port trunk permit vlan 1 to 200 DeviceC GigabitEthernet1 0 1 quit DeviceC interface gigabitethernet 1 0 2 DeviceC GigabitEthe...

Страница 110: ...hernet 1 0 1 DeviceB GigabitEthernet1 0 1 port link type trunk DeviceB GigabitEthernet1 0 1 port trunk permit vlan 1 to 200 DeviceB GigabitEthernet1 0 1 smart link flush enable control vlan 10 101 Dev...

Страница 111: ...GigabitEthernet1 0 2 quit 5 Verifying the configurations You can use the display smart link group command to display the smart link group configuration on each device For example Display the smart lin...

Страница 112: ...kets 5 Receiving interface of the last flush packet GigabitEthernet1 0 2 Receiving time of the last flush packet 16 25 21 2009 02 21 Device ID of the last flush packet 000f e23d 5af0 Control VLAN of t...

Страница 113: ...k ports and adapt the up down state of downlink ports to the up down state of uplink ports triggering link switchover on the downstream device in time as shown in Figure 7 1 Figure 7 1 Monitor Link ap...

Страница 114: ...uplink is the link that connects the uplink ports in a monitor link group while the downlink is the link that connects the downlink ports How Monitor Link Works A monitor link group works independentl...

Страница 115: ...igure member ports for a monitor link group in port view To do Use the command Remarks Enter system view system view Enter Ethernet port view or Layer 2 aggregate port view interface interface type in...

Страница 116: ...ork diagram for monitor link configuration Device A Device D Device B GE1 0 1 GE1 0 2 GE1 0 1 GE1 0 1 GE1 0 2 GE1 0 2 Device C GE1 0 1 GE1 0 2 Configuration procedure 1 Configuration on Device C Creat...

Страница 117: ...30 and enable flush message receiving on them DeviceA interface gigabitethernet 1 0 1 DeviceA GigabitEthernet1 0 1 port link type trunk DeviceA GigabitEthernet1 0 1 port trunk permit vlan 1 to 30 Devi...

Страница 118: ...2 port trunk permit vlan 1 to 30 DeviceD GigabitEthernet1 0 2 smart link flush enable DeviceD GigabitEthernet1 0 2 quit Create monitor link group 1 and then configure GigabitEthernet 1 0 1 as an uplin...

Страница 119: ...7 7 Member Role Status GigabitEthernet1 0 1 UPLINK DOWN GigabitEthernet1 0 2 DOWNLINK DOWN...

Страница 120: ...rm certain operations through the Track module More specifically the detection modules probe the link status network performance and so on and inform the application modules of the detection result th...

Страница 121: ...t can collaborate with the Track module is Static routing Track Configuration Task List To implement the collaboration function establish collaboration between the Track module and the detection modul...

Страница 122: ...nt this problem configure another route to back up the static route When the static route is reachable packets are forwarded through the static route when the static route is unreachable packets are f...

Страница 123: ...ssociated Track object must monitor the next hop of the recursive route instead of that of the static route otherwise a valid route may be considered invalid z For details of static route configuratio...

Страница 124: ...master route is unavailable the backup route takes effect and Switch D forwards packets to 20 1 1 0 24 through Switch C Figure 8 2 Network diagram for static routing track NQA collaboration configura...

Страница 125: ...oute to 30 1 1 0 24 with the address of the next hop as 10 2 1 4 SwitchB system view SwitchB ip route static 30 1 1 0 24 10 2 1 4 Configure a static route to 20 1 1 0 24 with the address of the next h...

Страница 126: ...information of the track entry on Switch A SwitchA display track all Track ID 1 Status Positive Notification delay Positive 0 Negative 0 in seconds Reference object NQA entry admin test Reaction 1 Di...

Страница 127: ...sts in 20 1 1 0 24 can still communicate with the hosts in 30 1 1 0 24 SwitchA ping a 20 1 1 1 30 1 1 1 PING 30 1 1 1 56 data bytes press CTRL_C to break Reply from 30 1 1 1 bytes 56 Sequence 1 ttl 25...

Страница 128: ...8 9 5 packet s received 0 00 packet loss round trip min avg max 1 1 2 ms...

Страница 129: ...onfiguring Monitor Link Group Member Ports 7 3 Configuring Procedure 3 8 Configuring Protected VLANs for a Smart Link Group 6 40 Configuring Role Preemption for a Smart Link Group 6 41 Configuring RRP...

Страница 130: ...ng Configuration Example 6 47 P Protection Switchover Technologies1 3 R RRPP Timers 5 5 RRPPDUs 5 4 S Single Ring Configuration Example 5 19 Single Smart Link Group Configuration Example 6 44 Smart Li...

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