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

rrr2015's avatar
rrr2015
Icon for Nimbostratus rankNimbostratus
Oct 24, 2015

F5 LTM tagged interface doesn't encapsulate using 802.1q

Hi all. I've a problem. I want to use a single LTM interface for more that one VLAN so I configured it as a tagged interface and I configured a tag on each and every VLAN. The fact is that apparently the LTM correctly understands the 802.1q frames sent to it thru a (Cisco) trunk interface but it returns the traffic without the 16 bits 802.1q encapsulation so the Cisco switch doesn't accept them. Could you please help me understand what I'm missing ? Thanks

 

application delivery
cisco
deployment
LTM
TMOS

2 Replies

  • mimlo_61970's avatar
    mimlo_61970
    Icon for Cumulonimbus rankCumulonimbus
    Oct 26, 2015

    Never seen this before. Did you also add the vlan to the proper interface as Tagged?

     

  • rrr2015's avatar
    rrr2015
    Icon for Nimbostratus rankNimbostratus
    Oct 27, 2015

    Hi mimlo, thanks for the reply. I had a talk with a tech guy far before me in his knowledge of F5 LTM and he suggested that being my setup based on the trial 11.3 LTM the problem could be related to route domains missing in the partition I used. I told me that the right configuration procedure in 11.3 is not that in the config. guide but it's the same as before (10.x) but unfortunately I didn't find it. Does it ring a bell in you ?