On 6/Apr/20 11:48, Saku Ytti wrote: > > Ok, and because this particular FRR VM does more than just ISIS, you > want the extra mtu between 9k and 8192? Yes sir. FRR is just another service running on the box, mainly to pull traffic toward it. > > Change MTU after starting ISIS? :> Hehe, I'm old now - I try to look for excitement outside of network operations :-). Mark.