01-16-2004 11:09 PM - edited 03-02-2019 12:57 PM
According to the feature navigator, my 1721 should support dot1q subinterfaces on my current IOS-build. For now, I'm at 12.3(2)XF advancedsecurity.
However - the command encapsulation dot1q doesnt work.
fw#conf t
Enter configuration commands, one per line. End with CNTL/Z.
fw(config)#int eth0.1
fw(config-subif)#encapsulation dot1q
^
% Invalid input detected at '^' marker.
fw(config-subif)#enca?
encapsulation
fw(config-subif)#encapsulation ?
% Unrecognized command
It recognizes the encapsulation command but nothing after that.
Isnt it supported on 1721, or do I need another feature-set? Or have I missed a command or so? :)
As I said, the feature-navigator told me that it should support this, but perhaps it's incorrect?
Thanks for helping
Solved! Go to Solution.
01-17-2004 01:59 PM
01-17-2004 01:59 PM
You probably need a fastethernet interface to run dot1q.
Mark
01-17-2004 03:05 PM
Ahhh, okey. Thanks.
01-17-2004 02:27 PM
Hello,
There are two things you need for this:
- You will need IP plus to facilitate VLAN trunking
- VLAN trunking only works on fast ethernet interfaces.
Regards,
Leo
01-28-2004 02:51 PM
VLAN trunking can also work on ethernet if you have certain IOS version like T train
Thanks,
Siad
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