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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