SMC Networks SMC6752AL2 Manual De Usuario

3-79

The following restrictions apply to ACLs:
•

Each ACL can have up to 32 rules.

•

The maximum number of ACLs is 88.

•

However, due to resource restrictions, the average number of rules 
bound to the ports should not exceed 20.

•

This switch supports ACLs for ingress filtering only. However, you can 
only bind one IP ACL to any port and one MAC ACL globally for 
ingress filtering. In other words, only two ACLs can be bound to an 
interface - Ingress IP ACL and Ingress MAC ACL. 

The order in which active ACLs are checked is as follows:
1. User-defined rules in the Ingress MAC ACL for ingress ports.
2. User-defined rules in the Ingress IP ACL for ingress ports.
3. Explicit default rule (permit any any) in the ingress IP ACL for ingress 

ports.

4. Explicit default rule (permit any any) in the ingress MAC ACL for 

ingress ports.

5. If no explicit rule is matched, the implicit default is permit all.

Use the ACL Configuration page to designate the name and type of an 
ACL.

•

Name – Name of the ACL. (Maximum length: 16 characters)

•

Type – There are three filtering modes:
-

Standard: IP ACL mode that filters packets based on the source 
IP address. 

-

Extended: IP ACL mode that filters packets based on source or 
destination IP address, as well as protocol type and protocol port 
number. If the “TCP” protocol is specified, then you can also 
filter packets based on the TCP control code.