jumbo frames issue (9000 bytes MTU)

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jumbo frames issue (9000 bytes MTU)

jumbo frames issue (9000 bytes MTU)

2005-07-28 - By wolf2k5

Back

Reply: 1 2 3 4 5 6 7 8 9

Hi,

I enabled jumbo frames (9000 bytes MTU) on two Dell PowerEdge 1850
servers running Red Hat Enterprise Linux 3 ES Update 5 x86_64 using
the following commands:

ifconfig eth1 mtu 9000
service network restart

After the MTU change, I was able to transfer (scp) very small files
between the servers, ping also worked fine, but when trying to
transfer bigger files, the copy process got stuck.
Also, the NFS mounts didn't work anymore.

I reverted the MTU change and all got back to work as before.

The switch is a Dell PowerConnect 5324 and it should support jumbo
frames just fine.

Do you have any idea about the cause of the issue?

Should I reboot the server instead of just restarting the network service?

Thanks.

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