[cisco-voip] CallManager LAN QOS Question [bcc][faked-from][html-rem]

[steve.siltman at assurant.com]

Doesn't the COS bits make up the first 3 bits of the DSCP?  I should see 
both if the sniffer lets me. :(
It is setup as an access port. 

Thanks,

Steve Siltman
Assurant Corporate Technology
Work: 651-361-4752
Cell: 651-336-5563
steve.siltman at assurant.com



"Avner Izhar" <aizhar at ccbootcamp.com> 
12/10/2007 03:17 PM

To
"Linsemier, Matthew" <MLinsemier at apcapital.com>, 
<steve.siltman at assurant.com>, <cisco-voip at puck.nether.net>
cc

Subject
RE: [cisco-voip] CallManager LAN QOS Question [bcc][faked-from][html-rem]






Hi,

Call Manager is doing DSCP based marking and not COS based, unless we talk 
about different things and mean the same, it is acting as it should.

Have you configured trunk toward the Call Manager? It should be an access 
port.

HTH,
-------------------------------------------
thanks,
Avner Izhar
CCIE#15999 (Voice), CCVP, CCSI# 31623
Technical Instructor
CCBOOTCAMP - A Cisco Sponsored Organization (SO)
Email: aizhar at ccbootcamp.com
Toll Free: 877-654-2243
Direct: +1-702-968-5100 = Outside the USA
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-----Original Message-----
From: cisco-voip-bounces at puck.nether.net 
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Linsemier, 
Matthew
Sent: Monday, December 10, 2007 11:56
To: steve.siltman at assurant.com; cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] CallManager LAN QOS Question 
[bcc][faked-from][html-rem]

Are you just sniffing COS?  Are the DSCP values correct that CallManager
is sending out?  RTP should be marked as DSCP EF and all SCCP,H.323, and
SIP should be marked as DSCP C3.  What are your DSCP -> COS mappings on
your switch?

 

From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of
steve.siltman at assurant.com
Sent: Monday, December 10, 2007 2:20 PM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] CallManager LAN QOS Question

 


Hi All. 

I implemented QOS on the LAN this weekend in our shop.  I configured 6
closets running a slew of 3750's and four 6500 CAT switches (with a few
6x48 blades).   I have one issue so far.  I'm sniffing one of the Call
Manager interfaces on the switch and all packets coming into the
CallManager seem to have the correct COS assigned.  All of the packets
sourced by CallManager are COS = 0.  This makes it look like CallManager
is changing these packets to 0.  Did I miss something on CallManager
that I need to enable?   The clusterwide parameters (System - QOS) under
Service Parameters is set to Normal Priority, EF, AF41 and CS3. 

Running CallManager 4.1.3sr5d 

Thanks, 

Steve Siltman
Assurant Corporate Technology
Work: 651-361-4752
Cell: 651-336-5563
steve.siltman at assurant.com 

 


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