2611XM with FW-feature and dot1q-trunking

Answered Question
Aug 18th, 2007


I want to set up a dot1q trunk to my switch on Fa0/0 of a 2611XM with c2600-io3-mz.123-23.bin. But the "encapsulation dot1q command" is not supported on it's sub-interface. Does anyone know what's wrong?

Best regards, Peter

I have this problem too.
0 votes
Correct Answer by JORGE RODRIGUEZ about 9 years 5 months ago

Peter , Im glad you resolved the issue with code upgrade.



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Overall Rating: 3 (4 ratings)
purohit_810 Sat, 08/18/2007 - 19:49

I think it has ETHERNET port, it is has no Fast ethernet Port.

If it has not fast ethernet port than it will not support trunking. that is ONE.

Second if it has Fast ethernet port but still it is not showing encapulation, check into SUBINTERFACE Command if it is supporting ot not.

Third, If you have fast ethernet but still it not showing ecanpuslation dot1q, than upgrade the IOS. NOw when you are going to upgrade IOS please check your flash??? free space.

This is only end to end solution for that.

Again keep in mind... TRUNK only support by fast ethernet + check on SUB interface.


Dharmesh Purohit


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