QoS LLQ (Low Latency Queueing) on Cisco IOS

Hello Brahim

When implementing class maps, there are many things that you can match to and many different ways of implementation. In your particular class maps that you shared, you have matches using

  • access lists
  • DSCP values

And you have policy maps calling those class maps that will match them and assign either bandwidth percentages to them, or set various DSCP values.

in order to understand policy-maps and class-maps better, take a look at the following post which includes additional links:

I hope this has been helpful!

Laz

the first sent is matching specific access lists. In particular, the match-any keyword is being used. When multiple match criteria exist, match statements take place using a logical OR function. A packet must match any of the match statements within the stated ACLs to be accepted.