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ip tcp adjust-mss on Catalyst 9500

Dear All,

 

I'm migrating an old c4948 to c9500-40x, but it appears the "ip tcp adjust-mss" option for a GRE tunnel is gone:

 

c9500-40x(config)#inter tun50
c9500-40x(config-if)#ip tcp adjust-mss 1360                             
                                   ^
% Invalid input detected at '^' marker.
c9500-40x(config-if)#ip tcp ?
  compression-connections  Maximum number of compressed connections
  header-compression       Enable TCP header compression

This is in Everest (v16.6). I read something on reddit about using Jumbos, but the problem here is that I'm using these switches as WAN agg and I can't yet do end to end Jumbos in this scenario. Does anyone know if Cisco plan to introduce adjust-mss in a later release? It is working on a 4500-x.

 

Regards

James.

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Re: ip tcp adjust-mss on Catalyst 9500

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Re: ip tcp adjust-mss on Catalyst 9500

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Re: ip tcp adjust-mss on Catalyst 9500

Thank you Georg, that looks hopeful. We need to sort out our internal licensing before I can jump to that code, but it's good to know the feature has been added.