08-05-2010 03:33 AM - edited 03-04-2019 09:19 AM
Hi Again
I am looking to set the value on a gig port on a 7609 to 1000 bytes to troubleshoot an issue and it seems that the only value that I can use is 9216?
IEBHCATE1(config-if)#mtu ?
<9216-9216> MTU size in bytes
IEBHCATE1(config-if)#mtu 1000
^
% Invalid input detected at '^' marker.
Is it not possibel to set the MTU value down to 1000 bytes?
Best Regards,
Michael
08-05-2010 04:53 AM
MIchael
What is the module you are trying to set it on ?
Jon
08-05-2010 05:27 AM
Hi
Perform show interface and see what is default MTU on interface and clear interface and clear counters.
if then also not resolving , then u can reset the interface by default command and then try to configure again.
default interface ( global config mode)
Uttam
08-05-2010 07:42 AM
Hi Jon
The Module I am trying to change the MTU on is a WS-X6724-SFP 24 port Gigabit Ethernet SFP and I was trying to change the MTU value to 1000 on a number of interfaces on this blade.
The default MTU value on each interface is 1500.
GigabitEthernet1/16 is up, line protocol is up (connected)
Hardware is C6k 1000Mb 802.3, address is 0011.5cdd.ac63 (bia 0011.5cdd.ac63)
Description: AXD-20-03 lmijtn
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
When I go into interface configuration mode and run the command "mtu ?" this is the output shown
IEBHCATE1(config)#int g1/16
IEBHCATE1(config-if)#mtu ?
<9216-9216> MTU size in bytes
IEBHCATE1(config-if)#mtu
Which leads me to believe that I can only change the MTU value to 9216 bytes.
Uttam: As this is a live port I cannot simply set it back to defaults. I would need to get a downtime window first. I was hoping that the MTU value was something that could be set on the fly.
What I have managed to do is set theMTU value on the VLANs that these ports are associated with to 1000 bytes, and I am waiting to hear back from the troubleshooters whether this is sufficient for their requirements.
Best Regards & Thanks for the responses.
Michael
10-10-2010 04:57 AM
hi
When the port is L2 it only support 9216 I think.If you wanna make it lets say 1600 you have to use routed interface i mean L3 interface .
The port default came with 1500 mtu size in L2 mode whenever you wanna change the only optinon is 9216.
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