Hi, On Tue, May 29, 2012 at 04:11:17PM +1030, CiscoNSP_list CiscoNSP_list wrote: > Are there any "issues" with setting mtu at 9000? (We have a mix of > routers/switches some of which only support mtu of 1500), so is adding a new > switch(or adjusting an existing switch(3560+2960)) going to cause issues if > other connecting devices mtu is smaller?
You need to ensure that the MTU settings of the layer3 devices connected
to the l2 fabric is smaller or equal than the *lowest* L2 MTU of any
switch in the fabric.
If one of the switches has a bigger L2 MTU, that's no problem.
gert
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