Forum Discussion
NimbostratusVirtual Server (type: standard) is not directing traffic to pool
I have an LTM appliance running BIG-IP 12.1.0 with a VS created, pointing at a pool containing two nodes. I can see the connected devices, all are responding to ICMP requests, and are in the same subnet, however navigating to the address of the VS does not take me to either load balanced node. To troubleshoot, I fired up tcpdump and tried to curl the VS address with an empty reply.
The nodes however, if I curl their addresses I immediately get a response from nginx (the application running).
Any insight? I suspected initially SNAT may be a solution point here, though when I go to compare the LTMs we have in production (and are managed by a third party), there are no SNAT pools or lists in use for the VS pointing to the child pools.
Thank you!
3 Replies
Vijay_ECirrus
Can you curl from F5's bash shell to the pool members ?
I suspect it is a SNAT issue. Just for testing purpose, can you add automap to the VS ?
R_MarcIf you are running in one-arm mode, you likely need to select automap (or create and use a snat pool).
TayF5unCould be asymmetric-routing problem. If you are running on inline mode, you can use irule;
when CLIENT_ACCEPTED {
if { [IP::addr [IP::client_addr] equals x.x.x.x] } {
snat automap
pool your_pool
}
}
