Forum Discussion

eagertolearn's avatar
eagertolearn
Icon for Nimbostratus rankNimbostratus
Aug 16, 2024

Entry stucked and works after clearing

Hello Experts, 

We have encountered a issue where we have saw backend pool members /pool down on a Virtual server.  Checked all the things (vlan, firewall port communication etc) all were fine.  

 

Pool members came up after manually clearing the  arp of same following Network > Arp path. problem is repeatedly happened for 2-3 VIPs on same load balancer.

We are searching what is going wrong everytime due to which ARP getting stuck and need to reset from load balancer end.

Is anyone also gone through this problem, and how it became sorted out permanently.

 

Rgds

***

 

 

 

application delivery
  • zamroni777's avatar
    zamroni777
    Icon for Nacreous rankNacreous
    Aug 17, 2024

    how do you set the vlan and interfaces?

    redundant active-standby f5 pair isn't single Layer 2 entity, but 2 of separate L2 entities.

    so for example, you cannot have a lacp in switch side that the interface members go to both f5 devices.

    you also cannot make an f5 vlan contains more than 1 interfaces then connect them to more than 1 switch.

  • Aswin_mk's avatar
    Aswin_mk
    Icon for Cumulonimbus rankCumulonimbus
    Aug 17, 2024

    Hi, 

    1. Is it a viprion device,(in vcmp)
    2. During issues, arp status showing as incomplete?

     

     

    • eagertolearn's avatar
      eagertolearn
      Icon for Nimbostratus rankNimbostratus
      Aug 27, 2024

      Hi Aswin, 

       

      Sometime it shows INCOMPLETE, but recently it was showing RESOLVED, still server was not UP on LB monitoring. after resetting the ARP things were functional.