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VSX config sync bug?

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  • 1.  VSX config sync bug?

    Posted Jun 27, 2022 11:39 PM
    Hello,
    i have following situation:
    8325-1# sh vsx status
    VSX Operational State
    ---------------------
    ISL channel : In-Sync
    ISL mgmt channel : operational
    Config Sync Status : configuration_sync_missing_reference
    NAE : peer_reachable
    HTTPS Server : peer_reachable

    Attribute Local Peer
    ------------ -------- --------
    ISL link lag256 lag256
    ISL version 2 2
    System MAC 02:01:00:00:01:00 02:01:00:00:01:00
    Platform 8325 8325
    Software Version GL.10.09.1020 GL.10.09.1020
    Device Role primary secondary

    8325-1# sh vsx status config-sync
    Admin state : Enabled
    Operational State : Operational
    Error State : Missing reference error
    Recommended remediation : A. Execute 'show running-config vsx-sync peer-diff' to determine which lines did not sync correctly on secondary
    B. Identify the configuration that is missing from secondary and manually fix via CLI.
    Current time : Mon Jun 27 15:36:03 2022
    Last sync time : Mon Jun 27 15:10:41 2022

    8325-1# show running-config vsx-sync peer-diff
    No difference in configs.


    is it some known issue ?

    Regards,
    Mladen


  • 2.  RE: VSX config sync bug?

    EMPLOYEE
    Posted Jun 28, 2022 02:44 AM
    try the command vsx-configmate
    and shared the output.
    If no reported problem, I would  recommend to check the VLAN presence on secondary.


  • 3.  RE: VSX config sync bug?

    Posted Jun 28, 2022 03:16 AM
    8325-1# vsx-configmate
    ============================================
    VSX FEATURE CONFIG PARSER
    ============================================

    VSX configuration validation results below:-

    Rule-1: The allowed VLAN list for ISL port must match that in config for MCLAG in 8325-1 (Passed)
    Rule-1: The allowed VLAN list for ISL port must match that in config for MCLAG in 8325-2 (Passed)
    Rule-2: The native VLAN must also be part of allowed VLAN list for a MCLAG in 8325-1 (Passed)
    Rule-2: The native VLAN must also be part of allowed VLAN list for a MCLAG in 8325-2 (Passed)
    Rule-3: The inter-switch-link Timers should be consistent across VSX peers (Passed)
    Rule-4: The Keep-Alive Timers should be consistent across VSX peers (Passed)
    Rule-5: Active-Gateway configurations(IP, MAC and VRF) should be consistent across the VSX peers (Passed)
    Rule-6: The Keep-Alive UDP port should be consistent across VSX peers (Passed)
    Rule-7: The link-up-delay-timer should be consistent across VSX peers (Passed)
    Rule-8: The VSX System-MAC should be consistent across VSX peers (Passed)
    Rule-9: The VSX device roles should be consistent across VSX peers (Passed)
    Rule-10: VSX active-forwarding configurations should be consistent across the VSX peers (Passed)

    Br,
    Mladen


  • 4.  RE: VSX config sync bug?

    Posted Jun 28, 2022 03:21 AM
    And vlans:
    8325-1# sh vlan summary
    Number of existing VLANs : 126
    Number of static VLANs : 126
    Number of dynamic VLANs : 0
    Number of port-access VLANs: 0

    8325-2# sh vlan summary
    Number of existing VLANs : 126
    Number of static VLANs : 126
    Number of dynamic VLANs : 0
    Number of port-access VLANs: 0



  • 5.  RE: VSX config sync bug?

    MVP GURU
    Posted Jun 28, 2022 02:54 AM
    Have you tried to manually/visually do a diff between both running configurations (VSX Primary versus VSX Secondary)? if so, are there any notable differences?


  • 6.  RE: VSX config sync bug?

    Posted Jun 28, 2022 03:27 AM
    Hello,
    There is many config differences because physical ports are different (it isn't fully redundant setup unfortunately).
    Br,
    Mladen


  • 7.  RE: VSX config sync bug?

    EMPLOYEE
    Posted Jun 28, 2022 04:59 AM
    It should show up at the diff command but i would manually check the LAG interfaces (multi-chassis) that are even.


  • 8.  RE: VSX config sync bug?

    MVP GURU
    Posted Jun 28, 2022 07:36 AM
    Technically speaking any differences in VSX LAG (Multi-Chassis LAG) - such as VSX LAG missing - should have been explicitly reported on the events:

    As example:

    2021-01-10:19:00:22.026340|vsx-syncd|7602|LOG_INFO|AMM|-|Configuration sync update : Missing Reference Error: Could not find Port lag30 on secondary VSX database.



  • 9.  RE: VSX config sync bug?

    Posted Jun 29, 2022 06:48 AM
    I  looks like ospf configuration on interface present on primary but not on secondary makes problems:
    Test on interface without ospf before:

    8325-1# sh run interface lag 24
    interface lag 24
    no shutdown
    ip address 1.2.1.1/24
    ip pim-sparse enable
    exit
    8325-1#
    8325-1# conf t
    8325-1(config)# interface lag 24
    8325-1(config-lag-if)# ip ospf 10 area 0
    8325-1(config-lag-if)# no ip ospf passive
    8325-1(config-lag-if)# end

    A few moments later :)

    8325-2#
    2022-06-29T12:34:21.151018+0200 vsx-syncd[6162] <INFO> Event|7602|LOG_INFO|AMM|-|Configuration sync update : VSX configuration-sync updated database
    2022-06-29T12:34:21.214077+0200 vsx-syncd[6162] <ERR> Event|7601|LOG_ERR|AMM|-|Configuration sync error : Missing reference on table Port, remoteUUID ead3b9e0-46bb-4058-9cc1-f156286d2b2d, index lag24. Use "show running-config vsx-sync peer-diff" for more detail.
    2022-06-29T12:34:30.822304+0200 vsx-syncd[6162] <INFO> Event|7602|LOG_INFO|AMM|-|Configuration sync update : VSX configuration-sync updated database

    And
    8325-1# show running-config vsx-sync peer-diff
    No difference in configs.

    Should it be a bug or not ?






  • 10.  RE: VSX config sync bug?

    EMPLOYEE
    Posted Jun 29, 2022 12:40 PM
    Could you confirm you have configured "vsx-sync ospf" under vsx ?


  • 11.  RE: VSX config sync bug?

    Posted Jun 30, 2022 03:46 AM
    Hello,
    Yes I have vsx-sync ospf.


  • 12.  RE: VSX config sync bug?

    EMPLOYEE
    Posted Jun 30, 2022 04:23 AM
    Do you have non-LAG interface that have OSPF config synchronized ? On non-LAG, it should work. If not, then this is a regression => TAC.
    On L3 LAG interface, I have to check.