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tux143's avatar
tux143
Icon for Cirrus rankCirrus
Apr 15, 2020

Switching boot image

I have LTM 10350v with two images installed 13.1.0.8 and 12.1.2 (currently 13.x is running)   I am seeing some issue with 13.1.0.8 so thinking to switch it to 12.1.2 for testing, so question is do...
BIG-IP
devops
LTM
Joern's avatar
Joern
Icon for Altostratus rankAltostratus
Apr 15, 2020

something like that?

 

20569-1 : BIG-IP Source IP cmp-hash setting is distributing traffic unequally

Component: TMOS

Symptoms:

After a period of time, Inet port exhaustion error messages begin to be reported, and traffic starts to fail:

crit tmm1[17985]: 01010201:2: Inet port exhaustion on <ip_address> to <ip_address>.

Conditions:

1. BIG-IP system uses sock or virtIO drivers; cmp-hash is src-ip.

2. Both VLANs are set to Source Address CMP Hash configuration.

3. Pool members are distributed to different TMM cores based on the VLAN configuration.

4. Traffic is load balanced to the pool member mapped to the other core.

Impact:

The system reports Inet port exhaustion error messages, and traffic starts to fail.

 

  • tux143's avatar
    tux143
    Icon for Cirrus rankCirrus
    Apr 15, 2020

     

     

    This is interesting, In SNAT statistics i am seeing its equally spreading traffic across all SNAT pool members.

     

    https://cdn.f5.com/product/bugtracker/ID720569.html

     

    In above article they are saying "The cmp-hash src-ip setting has been improved to avoid unequal distribution." so how do i configure cmp-hash src-ip setting ?

     

    My current model F5 model is 10350 running 13.1.0.8 version of software and this guys having issue related SNAT.

     

    If i am running same load-test on F5 model 10200 running 12.0.0.0 and i not seeing any issue. do you think it issue of 13.x.x.x ? That is why i want to revert my image to verify.