[c-nsp] How can I increase Ethernet MTU?

[Victor Sudakov]

Darren O'Connor wrote:
> > >> Switch(config)#system mtu jumbo 9198
> > > 
> > > Should I do that on all switches in the network simultaneously ?
> > >
> > > What if I set "system mtu jumbo 9198" on a random switch in the
> > > middle of the network, would it disrupt connectivity (STP or OSPF in
> > > the management VLAN or anything else)?
> > 
> > OSPF will be affected by an MTU mismatch, so if you have OSPF setup on
> > everything, expect a downtime until all switches are done.

> Or just set your routing MTU to 1500 while your ethernet MTU goes up to 9k+

I already have "system mtu routing 1500" configured, I guess it's the
default, I hope this will not change if I change the "system mtu jumbo"? 

Guess it's time for a lab.

-- 
Victor Sudakov,  VAS4-RIPE, VAS47-RIPN
sip:sudakov at sibptus.tomsk.ru