I read that the PA-GE module on the 7200 supports an mtu of >1500. I'm trying to set mine to 1546, but cannot. What command do I enter to enable support for this size?
Enter configuration commands, one per line. End with CNTL/Z.
EDR01(config)#int gig 5/0
EDR01(config-if)#ip mtu 1546
% Invalid input detected at '^' marker.
EDR01 (config-if)#ip mtu ?
<68-1500> MTU (bytes)
it is also a question of IOS image
also you need first to increase mtu with mtu command then you may be able to increase ip mtu
Hope to help