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Forum Discussion

quattroginger's avatar
quattroginger
Icon for Nimbostratus rankNimbostratus
Nov 26, 2019

npath troubleshooting

i have npath configured where the VIP, both pool members and self IP are within the same subnet. i believe i am seeing what i should through a tcpdump. i see the SYN from the client, and the ACK from...
application delivery
BIG-IP
LTM
aaperson's avatar
aaperson
Icon for Cirrus rankCirrus
Dec 02, 2019

Questions to ask: Did this ever work successfully? When did it stop? Were any changes (such as patches or hardware changes) made to the server devices? Was a new server recently added to the pool?

The configuration of the servers for npath routing is equally important to the F5 config. Your comment about everything working fine for a while and then requiring a reboot to fix it sounds a lot more like a server issue than the F5.

 

For reference: https://techdocs.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/ltm-implementations-13-0-0/4.html

https://techdocs.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/ltm-implementations-13-0-0/5.html

quattroginger's avatar
quattroginger
Icon for Nimbostratus rankNimbostratus
Dec 02, 2019

this is a new configuration, so its never been in production functioning without issues. a few times he reported it worked within few minutes of reboot but then had error again. thanks for links. those are the ones I've been referencing. the resets i was seeing is what made me second guess the f5 config. waiting on capture now to see traffic from server side.