Cisco MLS

[intertouch]

Can anyone advice what the following configuration mean?

mls qos srr-queue input dscp-map queue 2 threshold 1 16 17 18 19 20 21 22 23

mls qos srr-queue input dscp-map queue 2 threshold 2 33 34 35 36 37 38 39 48

[mheusinger · Accepted solution]

Hello,

The command syntax and meaning of the different parameters can be found f.e. at

http://www.cisco.com/en/US/products/hw/switches/ps5206/products_command_reference_chapter09186a0080505274.html#wp2128468

In brief packets with DSCP values of 16 to 23 will be sorted into queue 2 with a threshold 1 for WRED.

Packets with DSCP values of 33 to 39 plus DSCP 48 will be sorted into queue 2 with a threshold 2 for WRED.

This means that packets belonging to the second group will be dropped later (at higher queue "filling") than packets from the first group. This way group 2 packets have some advantage against group 1 packets.

Hope this helps! Please rate all posts.

Regards, Martin

[mheusinger]

Hello,

The command syntax and meaning of the different parameters can be found f.e. at

http://www.cisco.com/en/US/products/hw/switches/ps5206/products_command_reference_chapter09186a0080505274.html#wp2128468

In brief packets with DSCP values of 16 to 23 will be sorted into queue 2 with a threshold 1 for WRED.

Packets with DSCP values of 33 to 39 plus DSCP 48 will be sorted into queue 2 with a threshold 2 for WRED.

This means that packets belonging to the second group will be dropped later (at higher queue "filling") than packets from the first group. This way group 2 packets have some advantage against group 1 packets.

Hope this helps! Please rate all posts.

Regards, Martin