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Forum Discussion

neeeewbie's avatar
neeeewbie
Icon for MVP rankMVP
Sep 26, 2019

No traffic flowing when running tcpdump

Hello!!! I need your help!   When setting interface mirror, I want to check the traffic to the mirror port. When using tcpdump -nei 1.1, no traffic flows to the mirror port. If you turn off tcpd...
application delivery
BIG-IP
operations
neeeewbie's avatar
neeeewbie
Icon for MVP rankMVP
Oct 15, 2019

Thanks!

How do I check a packet without using the tcpdump command?

Anjuli_Lam's avatar
Anjuli_Lam
Icon for Employee rankEmployee
Oct 23, 2019

You should use an external capture device attached to the network interface to analyze (sniff) traffic that is mirrored to the interface. Hope that helps!