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hi,after testing 12.2(25)SEB1 on 3750 switches, it seems, the "ip mtu" command on loopback/vlan/l3-ports is not available.with 12.2(25)SE, ip mtu could be set on L3-interfaces as expected.is there a special knob in 12.2(25)SEB1 needed to enable user-...
thanks for the URL - if the 3750 featureset is handled same as the 3550, then it indeed seems this feature is no longer available in 12.2(25)SEB1.its always enlightening to see how essential features are removed between two minor releases..
you should try to find out if your nortel router supports dot1Q-trunk-links - as this is essential for doing inter-vlan-routing over one physical link between the switch and the router.
