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Traffic outage might occur on VSX Gateway with configured OSPF when adding a new Virtual System
Symptoms

  • Traffic outage might occur on VSX Gateway / VSX Cluster Member with configured OSPF when adding a new Virtual System.

  • After enabling generation of core dump files per sk92764 on VSX Gateway / VSX Cluster Members, core dump files for 'RouteD' process were generated in the /var/log/dump/usermode/ directory.

  • /var/log/routed.log file shows that adding a new Virtual System triggers deletion of the IP address from an external interface, on which OSPF is configured.

    Example: routed_1.log-Dec 5 00:30:31.131457 ifa_unnumbered: addresses for interface:int address: 127.0.0.1
    routed_1.log-Dec 5 00:30:31.131457
    routed_1.log:Dec 5 00:30:31.131457 EVENT bond1.10 x.x.x.x/30 -> x.x.x.x <>
    routed_1.log-Dec 5 00:30:31.131457 EVENT x.x.x.x
    routed_1.log-Dec 5 00:30:31.131457 EVENT index: 189 name: bond1.10 state: <>
    routed_1.log-Dec 5 00:30:31.131457 EVENT change: <> route: not installed
    routed_1.log-Dec 5 00:30:31.131457 EVENT refcount: 5 mtu: 1500
    routed_1.log-Dec 5 00:30:31.131457 EVENT network addr: x.x.x.x/30
    routed_1.log-Dec 5 00:30:31.131457
    routed_1.log-Dec 5 00:30:31.131457 task_ifaddr_change(431): Set the cluster flag for x.x.x.x(bond1.10) if clustered
    routed_1.log-Dec 5 00:30:31.131457
    routed_1.log-Dec 5 00:30:31.131457 task_ifaddr_change: Starting ifaddr_change of x.x.x.x(bond1.10) for task IF for instance default
    routed_1.log-Dec 5 00:30:31.131457 if_rtdelete: DELETE route for interface bond1.10 x.x.x.x/30
    routed_1.log-CHANGE x.x.x.x /30 gw 0.0.0.0 Static pref 60/- no metric bond1.10
    routed_1.log-CHANGE x.x.x.x /30 gw (null) Direct pref 0/- no metric bond1.10
    routed_1.log-Dec 5 00:30:31.131457 rt_close: 1 route proto IF
Solution
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