Wednesday, January 3, 2018

Do the new Catalyst 9k switches support ip tcp adjust-mss?

Hi everyone,

On my 3850s I see that ip tcp adjust-mss doesn't exist, which makes it a hard sell for use as a client side GRE termination solution, even though that's how they are marketed.

Online I've seen mention of the 3850 not supporting adjust-mss, however I haven't see any such mention of the Catalyst 9k switches.

I was wondering if anyone tried running "ip tcp adjust-mss" on their subinterfaces/Tunnels within a 9k switch? If so, I'd be happy to know whether or not it is supported.

Thanks!



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