Question on QOS via Trunks

Unanswered Question
Nov 20th, 2007
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Hi,

We have this Scenario...

Switch1/2/3(ip phones)<-Trunk-->bldg1 core<--giglink-->bldg2 core-->

Switch2--->Avaya PBX


Switch1/2/3: Auto QOS enabled on all ports including Trunk port (L2 uplink).


blbg1 Core: QOS is enabled globally, but Not on the trunk port to Switch1/2/3 etc..

bldg2 core:QOS is enabled globally, but Not on the L3 p2p gig connection to bldg1 core.


Switch2: QOS is not enabled.


No complaints from users. But curious to know if this is right way for QOS to work..?

Also, in general do we need qos to be enabled on other end of the up link ports (ex: bldg1 core: i/f to switch1)


Please advise.

Thanks in advance.

MS



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a.cruea1980 Fri, 11/30/2007 - 13:08
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I believe all you need to do with your trunks is to trust the dscp markings that have already been applied.


qos trust dscp, I believe is the interface command.

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