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Forum Discussion

mdiamore_227819's avatar
mdiamore_227819
Icon for Nimbostratus rankNimbostratus
Jun 14, 2018

VS fails to process ANY traffic

Currently attempting to configure my F5 to support unidirectional UDP forwarding of raw NetFlow from an upstream router but struggling to move traffic.   I can see traffic landing on 1.1 in the...
application delivery
BIG-IP
LTM
udp
virtual server
mdiamore_227819's avatar
mdiamore_227819
Icon for Nimbostratus rankNimbostratus
Jun 14, 2018

I have, and nothing. Only time I get any traffic on the intended back end member pool/port is when the udp healthcheck is enabled (which sends packets with the default_send_string text)

 

tcpdump -vvvnnnXi 1.5 (and 1.1 to see the traffic landing on the ingress interface) is the command used

 

The entirety of the virtual server statistics (bits in/out, packets in/out, connections) are all 0. (And I suspect this is not simply an F5 bug -- though I can't be sure -- due to the lack of packets traversing out 1.5 to the pool member)