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IRB interface flap during commits

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  • 1.  IRB interface flap during commits

    Posted 08-27-2020 04:27

    Hi everyone,

     

    I have some mx104's which I am using for vpls and some peering, and have noticed when I commit a change, it caused the irb interfaces to flap which in turn causes bgp sessions over these to also flap. I can reproduce it over and over which leads me to believe its either a bug or I am doing something wrong.

     

    The interface does work once the commit is complete.

     

    Model: mx104
    Junos: 17.3R3-S7.2

     

    This is the log I see when the commit happens

    Aug 27 12:56:13 isd-pe1 rpd[2613]: RPD_COMMIT_JOBS_STATUS: RPD commit jobs started on MASTER
    Aug 27 12:56:16 isd-pe1 mib2d[2661]: SNMP_TRAP_LINK_DOWN: ifIndex 609, ifAdminStatus down(2), ifOperStatus down(2), ifName irb.404
    Aug 27 12:56:16 isd-pe1 mib2d[2661]: SNMP_TRAP_LINK_DOWN: ifIndex 603, ifAdminStatus down(2), ifOperStatus down(2), ifName irb.424
    Aug 27 12:56:17 isd-pe1 mgd[35165]: UI_COMMIT_COMPLETED: commit complete

     

    This is the config of the irb interface and the vpls instance:

    isd-pe1# show interfaces irb.404
    description "isd-pe1-irb-404 | EVC1000010002";
    bandwidth 10g;
    vlan-id 404;
    family inet {
    mtu 1500;
    no-redirects;
    sampling {
    input;
    }
    address x.x.x.x/x;
    }
    family inet6 {
    mtu 1500;
    no-redirects;
    address x:x:x:x/x;
    }

     


    user@isd-pe1# show routing-instances tis-1000010002
    instance-type vpls;
    vlan-id none;
    routing-interface irb.404;
    protocols {
    vpls {
    no-tunnel-services;
    vpls-id 1000010002;
    neighbor 172.31.255.254;
    }
    }

     

     

    Here is an example

    user@isd-pe1# run show interfaces terse | match ge-0/0/0
    ge-0/0/0 up down

    {master}[edit]

    user@isd-pe1# run show configuration | display set | match 0/0/0
    set protocols lldp interface ge-0/0/0

    {master}[edit]

    user@isd-pe1# delete protocols lldp interface ge-0/0/0

    {master}[edit]
    user@isd-pe1# commit

     

    user@isd-pe1# run show log messages | last 100 | match SNMP
    Aug 27 13:22:36 isd-pe1 mib2d[2661]: SNMP_TRAP_LINK_DOWN: ifIndex 609, ifAdminStatus down(2), ifOperStatus down(2), ifName irb.404
    Aug 27 13:22:36 isd-pe1 mib2d[2661]: SNMP_TRAP_LINK_DOWN: ifIndex 603, ifAdminStatus down(2), ifOperStatus down(2), ifName irb.424

    {master}[edit]
    user@isd-pe1#

     

    Any ideas whats going on here ?

     

    Thanks

     

     

     



  • 2.  RE: IRB interface flap during commits
    Best Answer

    Posted 08-28-2020 00:01

    Update:

    I resolved this by removing the vlan-id statement from the irb interfaces.



  • 3.  Re: IRB interface flap during commits

    Posted 30 days ago

    Hi,

     

    Could you explain how removing vlan id on irb interface worked?