For more information regarding the security incident at F5, the actions we are taking to address it, and our ongoing efforts to protect our customers, click here.

Forum Discussion

Daniel_Kopfenst's avatar
Daniel_Kopfenst
Icon for Nimbostratus rankNimbostratus
Nov 02, 2012

Tcpdump and route domains?

Hi,

 

I have configured 2 route domains on my bigip pair (LTM 3900 - v11.2 Build 2557). For troubleshooting purposes I took some network traces from networks which belong to the second route domain.

 

I analysed the traces with wireshark and saw in each line "ETHERNET FRAME CHECK SEQUENCE INCORRECT" as error. I checked the inbound (firewall) and outbound connection (internet router) via traces and mirror ports and wasn't able to find a failure. Also the traffic is working fine.

 

My suspicion is now that tcpdump has some problems with tracing route domains. Changing the route domain with rdsh ore executing the command with rdexec hasn't worked - in that case I don't catch any traffic.

 

Any idea?

 

Thanks Daniel

 

config
design

2 Replies

  • uni's avatar
    uni
    Icon for Altocumulus rankAltocumulus
    Nov 05, 2012
    tcpdump is fine with route domains. I use it all the time, and without getting frame check-sequence errors.