[c-nsp] Large MTU on catalyst switch

[Mark Pace Balzan]

Hi,


I have a C2924XL 24 port 10/100 Base-T which has some ports running at
the regular 1500byte MTU, and some ports (used for MPLS) running at 1504

Im looking at upgrading the switch and getting a 48 port box.  However
it looks like the 2950,2960,3560 etc... do not support per interface MTU
larger than 1500, but just a global MTU applied to all interfaces.

Given that I only need some interfaces at 1504 and the rest at 1500, Im
kind of stuck.   What are the ill effects of having an MTU at 1504 on
the switchport, if the L3 interface of the router/host attached to that
particular port is set at 1500 (I assume no pmtud/fragmentation related
issues, since the MTU change is on the L2 switch port, not on the L3 IP
interface), and yes the switch is intended to do plain L2 aggregation.

Recommendations for which switch to go with,  anyone ?


Thanks


Mark