Cisco 3750 Mac address cache size

Depends on your SDM profile. I think the default is 8k. The 3750/3560 has only a limited amount of CAM memory and must be allocated for mac addresses (switching and multicast) and CEF tables (routing). The SDM profile adjusts how much CAM memory is allocated for each of these purposes. The command to see how CAM is allocated is something like "show sdm profile"

Thanks, I'll check it on Monday. Today I test one port using Spirent AST II on the 3750G. It is 4K for that port. I don't know Cisco give one numner for switch or also has a limited MAC size number for a single port. Any comments? /st

on the smaller switches it is 1 table for the entire switch.