[c-nsp] Cisco 7200 - IOS15.1 - Port-channel

[Billy Guthrie]

Jason,

I found this:

CSCsc62963

Symptoms: The interface MTU is not user configurable. When you attempt 
to configure the interface level command mtu command, the following 
message is printed:

% Interface {Interface Name} does not support user settable mtu.

Conditions: The symptom is observed with a 2-port FE on a Cisco 7200 
series router.

Workaround: There is no workaround.

Says it was fixed in Version 12.4(25c), also applies to the 2-port FE; 
however, it states to remove the mtu setting on the port-cahnnel could 
still very well be related to a variant of the bug. I was about to 
configure the FastE interface using Version 12.2(33)SRD4, so as 
suggested, I would open a case with TAC as it clearly appears to be a bug.

Good Luck
Billy

Jason Berenson wrote:
> Well, I downgraded to the latest 12.4 (c7200-is-mz.124-25c.bin).  Same 
> symptoms.  Any ideas?  I tried removing the port-channel and re-adding 
> too, no luck.
>
> -Jason
>
> On 4/12/2010 3:30 PM, Jason Berenson wrote:
>> Greetings,
>>
>> I just upgraded a Cisco 7206 NPE-400 to: 
>> c7200-advipservicesk9-mz.151-1.XB.bin from the latest 12.4.  I've got 
>> a port channel and it removed the 'channel-group 1' line from the two 
>> ethernet interfaces.  When I try to add them back I get:
>>
>> router(config-if)#channel-group 1
>> Error: This interface does not allow user-settable mtu.
>>  Remove the mtu command from the port channel configuration
>>  to be able to add this interfaceto the port channel
>>
>> I don't have any mtu commands on any interfaces except the defaults, 
>> which can't be removed.  Here's the relevant config:
>>
>> interface Port-channel1
>>  description << TO GI9/5 10/5 >>
>>  no ip address
>>  no ip redirects
>>  random-detect
>> !
>> interface Port-channel1.11
>>  encapsulation dot1Q 11
>>  ip address IP 255.255.255.0
>>  no ip redirects
>>  ip ospf authentication-key 7
>>  ip ospf cost 1
>>  ip ospf dead-interval minimal hello-multiplier 4
>> !
>> interface FastEthernet0/0
>>  description << TO 9/5 >>
>>  no ip address
>>  no ip redirects
>>  no ip unreachables
>>  duplex full
>>  random-detect
>>  no cdp enable
>> !
>> interface FastEthernet2/0
>>  description << TO 10/5 >>
>>  no ip address
>>  no ip redirects
>>  no ip unreachables
>>  duplex full
>>  no cdp enable
>> !
>>
>> Any tips/help would be greatly appreciated.
>>
>> Thanks,
>> Jason
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