Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

Ruchit_Patel_31's avatar
Ruchit_Patel_31
Icon for Nimbostratus rankNimbostratus
Apr 08, 2017

No interface available to add to trunk.

Hi All,   Good day,   I am new to BIG IP and I just installed the LTM Lab.   Now I am checking on trunking the internal and external interface but I am unable to see any interface in the ava...
application delivery
big-ip
LTM
Amine_Kadimi's avatar
Amine_Kadimi
Icon for MVP rankMVP
Apr 08, 2017

Hi,

 

I see that all your interfaces has been assigned to VLANs (column VLAN Count in the 2nd screenshot). You cannot add interfaces to a trunk if they are already assigned to VLANs. You must delete the two interfaces from their respective VLANs, then create the trunk with both of them, and then add the trunk to each of your two VLANs.