I understand how MLS and its caching works on the switch. I also understand how CEF caching works as well.
However, what happens with the packets and frames when MLS is turned on on the switch, and the CEF turned on on the MSFC2 cards (routing module)?
Which one is faster? Which is more efficient? What problems could arise with having both of them turned on?
Interesting -- I've never used a 6509 with a SUP2 so I can't say for sure.
But per the CatOS documentation ( http://www.cisco.com/en/US/products/hw/switches/ps708/products_configuration_guide_chapter09186a008016399a.html ), it appears that there's a relationship between CEF and MLS on the Sup2, at least from a command standpoint. Apparently, what you're looking at with those "show mls" commands is actually CEF stats.