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ACL strings limit

mhavin_mtu
Level 1
Level 1

I'm interesting what limitation on number of ACL strings does cisco catalyst switches have, in particular 3750?

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dominic.caron
Level 5
Level 5

The 3750 does hardware ACL processing in the TCAM. There is no max number of ACL string, it's all a mater of size after it's compile and put in hardware. If an ACL doesnt fit after the merge algo, you will have a message in the log and the ACL will be process by the CPU(this is bad) There is about 1K of space in the TCAM on a 3750 for security ACL and 1K for VLAN ACL if I remember correctly,