Forum Discussion

2019F5DevCentra's avatar
2019F5DevCentra
Icon for Cirrus rankCirrus
Jan 22, 2020

ARP By VIP?

I've noticed issues with Failing over, the ARP table does not refresh completely. I am pretty confident in stating it's an issue with a device between our HA Pair.

 

But to resolve this on the F5, the visibility I am seeing is that specific VIP's on the F5 are not being presented in the ARP Table. This presents a problems for just the specific VIPs. The resulting action is a "Page Cannot be Displayed" Message and the VIP looks like it is down. Troubleshooting on the F5, everything is green, responses and health checks are clear.

 

Now, I have Critical and Non Critical VIPs that reside on the same interface as these VIPs. Is there any way to force an ARP update for one Specific IP on the F5 without impacting the entire Interface?

 

 

application delivery
LTM
  • Lidev's avatar
    Lidev
    Icon for Nacreous rankNacreous
    Jan 22, 2020

    Hi,

    Take a look on MAC masquerade (https://support.f5.com/csp/article/K13502)

  • 2019F5DevCentra's avatar
    2019F5DevCentra
    Icon for Cirrus rankCirrus
    Jan 23, 2020

    MAC Masquerade looks like the long term solution.

     

    What about a quick remediation in between?

     

    Thanks