How to disable the MET Vlans

[vesk01]

Hello guys,

we are hitting bug CSCuq70431 and as a workaround there it says "There is a backdoor method to disable the MET Vlans."

Can please someone let me know what this backdoor method for disabling the MET Vlans is?

Thanks in advance,

Vesko

[Madhukrishnan Gopinathan Nair · Accepted solution]

Hello I just checked some details on this bug. Here is what I got.

·         Gather your configuration that is running on a box that has MET reserved vlans and save as a text file. (even though you are not using the MET vlans for anything)
·         Add one of the MET reserved vlans to the  text file configuration
o   Vlan 4001
Name testvlan
·         Copy text file to startup
·         Copy startup to run(populates vlans that are new into vlan table)
·         Reload device
·         When asked ?System configuration has been modified. Save? [yes/no]:? say no
·         Proceed with reload
·         Once box is backup confirm you do not have met reserved vlans.  Only will see the below. Your 4001 vlan has also been created at this point.
 
 
VLAN Usage
---- --------------------
1006 online diag vlan0  
1007 online diag vlan1  
1008 online diag vlan2  
1009 online diag vlan3  
1010 online diag vlan4  
1011 online diag vlan5  
1012 PM vlan process (trunk tagging)

Once again, i have not tested anything like this in lab, i am just sharing this information to you. Applying this work around is solely at your discretion .

Hope this helps.

Thanks,

Madhu.

[vesk01]

Hello Madhu,

can you please let me know if we can also expect to have a release in which this bug will be fixed so that such a workaround is not needed.

Vesko

[Madhukrishnan Gopinathan Nair]

Not sure of that at this moment. 

Thanks,

Madhu

[Madhukrishnan Gopinathan Nair]

Hello Vesko,

Is there anything else needed on this. Kindly remember to rate useful posts.

Regards,

Madhu

[Madhukrishnan Gopinathan Nair]

Also this bug is not resolved yet.

[Mark Malone]

May help

http://packetpushers.net/cisco-catalyst-6500-understanding-the-met-reserved-vlan-range-on-ios-15/