How can i enable Jumbo frame with EHWIC-4ESG?

[danielchau]

Dear all

According to the documentation, it should be supported, 

http://www.cisco.com/c/en/us/products/collateral/interfaces-modules/qa_c67-612908.html

However, i cannot found out any documentation, or any cases on the internet, that can enable this .

I have got a cisco 1921 router but failed with common way to enable the mtu

1921#sh int gigabitEthernet 0/1/0
GigabitEthernet0/1/0 is up, line protocol is up
Hardware is EHWIC-4 Gigabit Ethernet, address is b0fa.ebd3.9ce8 (bia b0fa.ebd3.9ce8)
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s
ARP type: ARPA, ARP Timeout 04:00:00

1921(config)#int gigabitEthernet 0/1/0

1921(config-if)#system mtu?
% Unrecognized command

1921(config-if)#mtu?

% Unrecognized command

Would you please kindly help on this?

Thanks.

Daniel

[mile.ljepojevic]

System MTU is on global configuration mode, not on interface, so try it there...

On Interface, try IP MTU ...

Thanks.

[danielchau]

Thanks Mile,  tried seems also not work...

r1921(config)#int gigabitEthernet 0/1/0
r1921(config-if)#ip mtu?
% Unrecognized command

[n-kirillov]

Hi Daniel!

It's changed in vlan configuration mode

Enter configuration commands, one per line. End with CNTL/Z.
RIGHT_2911(config)#vlan 511
RIGHT_2911(config-vlan)#mtu ?
<1500-18190> Value of VLAN Maximum Tranmission Unit

RIGHT_2911(config-vlan)#mtu