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SRX loosing ARP entry to def. gateway

  • 1.  SRX loosing ARP entry to def. gateway

    Posted 06-29-2022 09:34
    Hi all,

    I encountered a rather weird situation on a SRX4100 firewall after work we had not on the firewall but on Juniper virtual switch stack the firewall is connected to. The problem is that some time after the virtual switch stack upgrade the SRX lost the ARP entry to the default gateway(the IP of the def. gateway is a VRRP IP shared between 2 routers) making it "dead" for the rest of the network.
    All other equipment is visible to the SRX except the def. gateway. Also no other equipment either Juniper or Cisco in the same segment experienced something similar.

    I resolved the issue by making a static ARP entry to the def. gateway but this doesn't seem like a permanent solution.

    The SRX itself is in a passive/active cluster and OS version is 19.4R3-S1.3.

    Did somebody encounter something similar that could explain this behaviour?