Hey Folks!

today i was working with classifying / marking traffic on the A2/A4/B3/B5 Platforms (latest Firmware).

Basically i want my QoS Setup based on DSCP values, because its end to end.

As far as i could figure out, ETS switching does its priority internally on CoS values.

Does anyone of you know, if this is correct?

So that means somehow the CoS values must be set.

I found that this configuration is pretty doing this job (B5 Plattform):

set policy profile 1 name "QoS" cos 0 cos-status enable

set policy rule 1 iptos 32 mask 8 cos 1 forward

set policy rule 1 iptos 40 mask 8 cos 1 forward

set policy rule 1 iptos 64 mask 8 cos 2 forward

set policy rule 1 iptos 72 mask 8 cos 2 forward

set policy rule 1 iptos 96 mask 8 cos 3 forward

set policy rule 1 iptos 104 mask 8 cos 3 forward

set policy rule 1 iptos 128 mask 8 cos 4 forward

set policy rule 1 iptos 136 mask 8 cos 4 forward

set policy rule 1 iptos 184 mask 8 cos 5 forward

set policy rule 1 iptos 192 mask 8 cos 6 forward

set policy rule 1 iptos 224 mask 8 cos 7 forward

set policy port *.*.* 1

But the last two rules will never set cos 6 or cos 7, they set always cos to 5. Does anyone has an explaination for this?

Ok, this config does its job on untagged ports before a tag is imposed.

We have here also a couple router (firewall) on a stick scenarios; (CoS) marked tagged frames are going to the firewall, but they coming (CoS) unmarked and tagged back.

How do i derive CoS values from the DSCP values on tagged ports?

The A2 switch does not support the syntax of the b5 (i guess through the legacy device).

But anyway is there a option to do the same thing on the B5 platform?

any help would be great guys