04-03-2012 11:28 PM - edited 03-07-2019 05:56 AM
I have one 12-port 3750 switch having one gig connectivity with ASR-9010 router having IOS-XR. I am not able to ping this link with 9000 mtu size. I have enable system mtu jumbo on switch to 9000 and on ASR router interface mtu is set to 9114.
At switch side switch interface is configured as a trunk port and one vlan has been passed on that interface.
SW1#sh run int gi1/0/10
Building configuration...
Current configuration : 152 bytes
!
interface GigabitEthernet1/0/10
switchport trunk encapsulation dot1q
switchport trunk native vlan 10
switchport mode trunk
speed nonegotiate
end
SW1#sh run int vlan 10
Building configuration...
Current configuration : 64 bytes
!
interface Vlan10
ip address 172.16.10.1 255.255.255.240
end
I am not able to ping the ip 172.16.10.2 with 9000 mtu size.
Kindly provide me the solution for same.
Thanks in advance...Amol
04-09-2012 03:13 AM
Hello ,
Pls reply someone...
04-09-2012 03:20 AM
Try pinging 172.16.10.2 with a range of MTU sizes. Are you able to ping it at all?
04-09-2012 03:37 AM
Hello Adam ,
Thanks for ur reply. I am not able to ping more than mtu size of 1998. It's only pinging with 1998 mtu size.
04-10-2012 12:14 AM
You can check MTU "show system mtu" on sw3750 and "show inter vlan 10" . Maybe 1998mtu is system MTU size
04-10-2012 12:23 AM
I have set the MTU size to 9000 by using command sysytem mtu jumbo 9000 and int vlan mtu size is 1500.
04-10-2012 02:27 AM
So you can increase mtu on interface vlan 9000, after you can check ping size 9000 again.
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