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System-wide MTU 1400 setting?

807557Nov 1 2006 — edited Nov 2 2006

How do I setup the interfaces to use MTU of 1400?

I have been able to add "mtu 1400" to /etc/hostname.XXX and got those NICs to set mtu to 1400.

However when I bring up the zones, the virtual NICs that get created in the process, sets the MTU to 1500.

Similarly in Veritas Cluster environment, when I bring up the service group, the virtual NIC that gets plumbed, also sets MTU to 1500.

Other than running a script to scan each NIC and executing - ifconfig <NIC> mtu 1400 - is there a way I can set the MTU to 1400 system-wide?

I need this setting for both Solaris 10 and Solaris 9 boxes.

If anybody has any input/suggestion on how to do this, please reply.

Thanks.

- SG

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Locked on Nov 30 2006

Added on Nov 1 2006

#oracle-solaris, #solaris-10

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