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cbwfq classes with traffic matching multiple classes

peterbe
Beginner
Beginner

Hi

Using CBWFQ with access-lists to match traffic assigned to classes. If access-lists are not very specific, what happens to traffic that is matched by 2 or more access-lists i.e. traffic could be put multiple classes?

What is the process for the router uses to determine which class to assign that traffic too?

thanks

Peter

1 Accepted Solution

Accepted Solutions

Giuseppe Larosa
Hall of Fame Master Hall of Fame Master
Hall of Fame Master

Hello Peter,

the order of referring of the class-maps in the policy-amp config counts and so traffic will match on only one class the first one in the order for which the traffic flow matches a criteria like an ACL.

you can see the order in the output of

sh policy-map

This is not good practice and should be avoided if possible by defining ACLs with no possible matches in common for a clean configuration.

Hope to help

Giuseppe

View solution in original post

2 Replies 2

Giuseppe Larosa
Hall of Fame Master Hall of Fame Master
Hall of Fame Master

Hello Peter,

the order of referring of the class-maps in the policy-amp config counts and so traffic will match on only one class the first one in the order for which the traffic flow matches a criteria like an ACL.

you can see the order in the output of

sh policy-map

This is not good practice and should be avoided if possible by defining ACLs with no possible matches in common for a clean configuration.

Hope to help

Giuseppe

Thanks Giuseppe

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