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SanYang's avatar
SanYang
Icon for Cirrus rankCirrus
Oct 16, 2024

Problems with ping dropped packets

Hello Experts,   I've recently encountered a strange problem where the ping node drops packets (about 10-20%) when gtm1 is active, but when gtm1 is in standby, the ping node doesn't drop any packet...
application delivery
LTM
zamroni777's avatar
zamroni777
Icon for Nacreous rankNacreous
Oct 19, 2024

how is the exact/detailed config of po27 in switches and f5 sides?
gtm1 and gtm2 should not be part of single LACP because f5 pairs are not cascaded switches.

you will also need to configure correct spanning config.
f5 devices by default will pass thorugh spanning tree frames.
i suggest disable it in f5 sides so it behaves like servers.
https://techdocs.f5.com/en-us/bigip-14-1-0/big-ip-tmos-routing-administration-14-1-0/spanning-tree-protocol/spanning-tree-mode.html

  • SanYang's avatar
    SanYang
    Icon for Cirrus rankCirrus
    Oct 20, 2024

    Hi zamroni777  ,

    Thanks for your reply.

    F5 and Switch po27 are both LACP.
    F5's STP mode is deisable already.