Access Control Lists (ACLs) for the Series 3400cl and Series 6400cl Switches 
Configuring and Assigning an ACL 
Standard ACL Structure 
Individual ACEs in a standard ACL include only a permit/deny “type” state-
ment, the source IP addressing, and an optional log command (available with 
“deny” statements). 
ip access-list < type > "< id-string >" 
permit host < source-ip-address > 
deny < source-ip-address > < acl-mask > [log] 
. 
. 
. 
permit any 
exit 
Figure 10-9. Example of the General Structure for a Standard ACL 
For example, figure 10-10 shows how to interpret the entries in a standard 
ACL. 
ACL List Heading with 
List Type and ID String 
(Name or Number) 
Mask 
ACE Action 
(permit or deny) 
End-of-List Marker 
Source IP Address 
Optional Logging 
Command 
Figure 10-10. Example of a Displayed Standard ACL Configuration with Two ACEs 
Extended ACL Configuration Structure 
Individual ACEs in an extended ACL include: 
■  A permit/deny “type” statement 
■  Source IP addressing 
■  Optional TCP or UDP port type with optional source port ID and 
operator and/or optional destination port ID and operator 
■  Destination IP addressing 
10-37