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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
Rodrigo_Albuque's avatar
Rodrigo_Albuque
Icon for Cirrocumulus rankCirrocumulus
Oct 14, 2019

Are you trying to capture on the Standby? If this is L7 mirroring then try tcpdump on the same interface you'd receive external traffic if the box were Active.

  • neeeewbie's avatar
    neeeewbie
    Icon for MVP rankMVP
    Oct 24, 2019

    yes, F5 team release new note relate to this situaltion