Hi, On Wed, Jan 25, 2012 at 01:52:16PM -0500, Lamar Owen wrote: > The Cat6k got its start as the Cat5k. The MSFC got its start as the > RSFC for the Cat5k SupIIG (and later IIIG). Cat5k/SupIIIG+RSFC = > something like Cat6k w/MSFC in hybrid mode with CatOS on the supervisor. > (Source: Kennedy Clark's 'Cisco LAN Switching' from a long time ago plus > my own experiences with currently running in production Cat5k hardware).
Ah, the times. The RSFC actually came later, the RSM was before that -
not a feature card for the Sup, but a full-sized 7500-RSP2 folded into
a cat5k line card, talking to the rest of the sytem via a special internal
trunk.
Interesting enough, the RSM was supported in IOS 12.2, while the (much
faster) RSFC died with 12.1 - which made a big difference for us at the
time, since 12.2 brought 64bit SNMP counters, and without those, the
(otherwise working) VLAN counters on the RSFC are fairly useless...
gert
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