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Table of Contents

Networking Requirements

In Figure 1, the SwitchB has dual-access to the network through SwitchA1 and SwitchA2 using LACP LAGs.

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MLAG implements a backup link aggregation group between SwitchA1 and SwitchA2 to improve network reliability.

Figure 1 MLAG Topology

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Procedure

SwitchA1

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NOTE:

PICA8 recommends configuring a static ARP for peer-link interface to prevent ARP entry of the peer-link interface from being modified by ARP attack packets.

Step9         (Optional) Configure MLAG system priority.

                   admin@SwitchA1# set interface aggregate-ethernet ae1 aggregated-ether-options mlag priority 2

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                   admin@SwitchA1# set interface aggregate-ethernet ae1 aggregated-ether-options mlag reload-delay 300

Step12      (Optional) Step12       Configure system ID for LACP negotiation.

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                   admin@SwitchA2# set interface aggregate-ethernet ae1 aggregated-ether-options mlag reload-delay 300

Step12      (Optional)    Configure system ID for LACP negotiation.

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     10.10.0.1           48:0f:cf:af:50:7f      FULL            UP

•  You can use the run show mlag internal command to view the status of MLAG interface state, and view the results of the consistency check.  

    admin@SwitchA1# run show mlag internal

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    1                 ae1             false     true          FULL      CONFIG_MATCH       SLAVE

 •  You can run the run show mlag internal domain-id detail command on each peer-link device to view the details of the configuration items.

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    Tagged VlanID: 15

 •  You can use the run show lacp internal command to view the config information of local LACP.

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      te-1/1/50          32768      0x50          0x50        0x3D    Current              Slow Periodic    Collecting Distributing 

 •   You can use the run show lacp neighbor command to view the config information of LACP neighbor.

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    • run show lacp neighbor command to view the config information of LACP neighbor.

      Aggregated interface: ae1

        Port Number   Partner System ID                    Partner Port Num   Port Priority   Admin Key   Oper Key   State

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

             ge-1/1/1      32768,48:0F:CF:AF:50:7F       1                           32768           0x00              0x202      0x3D 

             ge-1/1/2      32768,48:0F:CF:AF:50:7F       513                       32768           0x00              0x202      0x3D 

    • run show lacp internal command to view the config information of local LACP.
      LACP System ID: 32768,08:9E:01:61:64:13
      Aggregated interface: ae1

      Port Number   Priority   Admin Key   Oper Key   State   Receive State   Transmit State   Mux State

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

       ge-1/1/1         32768      0x35            0x35          0x3D    Current             Slow Periodic    Collecting Distributing 

       ge-1/1/2         32768      0x35            0x35          0x3D    Current             Slow Periodic    Collecting Distributing