Hi !
MTU changed on per-vlan basis.
NAME: "CISCO2911/K9", DESCR: "CISCO2911/K9 chassis, Hw Serial#: ___, Hw Revision: 1.0"
PID: CISCO2911/K9 , VID: V06 , SN: _
NAME: "4 Port GE Non-POE EHWIC Switch on Slot 0 SubSlot 2", DESCR: "4 Port GE Non-POE EHWIC Switch"
PID: EHWIC-4ESG , VID: V01 , SN: FOC1708____
RIGHT_2911#conf t
Enter configuration commands, one per line. End with CNTL/Z.
RIGHT_2911(config)#vlan 2
RIGHT_2911(config-vlan)#mtu ?
<1500-18190> Value of VLAN Maximum Tranmission Unit
RIGHT_2911(config-vlan)#mtu 9000
RIGHT_2911(config-vlan)#
Nikolay
Good luck
CCIE, Irkutsk, Russia
1
Sincerely from Nik