topic Re: Setting MTU on VSX in Firewall and Security Management

Setting MTU on VSX

Greg_Harbers — Wed, 26 Jun 2024 22:19:04 GMT

We have a requirement to change the MTU of a sub-interface on a VSX cluster, We can see that under the settings for the sub-interface there is the option to set the MTU but what about the parent interface? does that need to be increased also, or will VSX take care of that automatically?

ie in clish we can see

set interface bond1 mtu 1500
set interface bond1.100 mtu 1500

In the settings of the interface in smartconsole, there is the option to change the MTU of bond1.100, but not of bond1. Does this need to be increased at the OS level prior to increasing the MTU of the sub-interface via smartconsole?

Thanks

Re: Setting MTU on VSX

emmap — Thu, 27 Jun 2024 03:21:04 GMT

Setting MTU on the sub interface in SmartConsole and installing the VS policy will push that MTU config out to the trunk interface as well.

Re: Setting MTU on VSX

Greg_Harbers — Thu, 27 Jun 2024 04:21:55 GMT

Great, thanks

Re: Setting MTU on VSX

maildpak — Fri, 13 Dec 2024 11:32:00 GMT

On sub-interface it will show 1500 MTU (if u set from GUI), but still on bond and physical interface it will show previously configured MTU (for example 9000)

Will this not create a issue... ?