Marque vlans voip with DSCP end-to-end

[csco11579831]

Hello,

I want to mark all vlan voip with  DSCP (value 46) end to end,could you plz tell me how i can do it?,

SW:2960 or 3560

SW_BB0:3570

Router3800

Phone type:Avaya

Phone <-------->SW<-------->SW_BB0 <--------> RouterX <--------> RouterY <------> RouterZ <--------> Router-customer<-------->Phone

Best regard

[paolo bevilacqua]

You don't need to anything, by default routers and switch will not change DSCP value.

[csco11579831]

Hi Paolo,

So should I configure DSCP just on first Switch or router?

And if you could please tell me the best place where I apply the config?

James

[paolo bevilacqua]

No need to configure anything, the end devices will set DSCP.

[csco11579831]

my problem is that I can not keep the tag after crossing a switch,

[paolo bevilacqua]

In the switch, remove all qos and similar useless configuarion. That will keep the dsp value inchanged.