02-06-2009 06:47 AM - edited 03-15-2019 04:02 PM
Hello,
It seems that my IP Phones 7911 have their voice flow that are not tagged in EF but in DSCP 0, why ?
DSCP For Call Control CS3
DSCP For Configuration Default
DSCP For Services Default
How can I change this, I'm with a CCME.
thanks
Olivier
02-06-2009 07:28 AM
Where are your IP phones connected?
Is it a switch?
Does that switch have MLS qos enabled? Does the port the phone is connected to have 'mls qos trust dscp' or 'mls qos trust cos'?
-nick
02-06-2009 07:38 AM
no mls qos enabled I want to specify the IP Phone to tag the RTP in EF and the sig in AF31 but on the phone not on the routers.
Temporarely I have configure policy-map to identify with ACL my RTP and Sig trafic and to tag them but I prefer to do it internally on the IP Phone (7911)
02-08-2009 01:15 PM
NM-16ESW with PPWR-DCARD-16ESW - I think this integrated switch enables mls qos by default. Default means that nothing is trusted so you do need to enable trusting as you suggest.
02-06-2009 07:30 AM
Which exact IOS and phone FW ?
02-06-2009 07:36 AM
02-06-2009 07:53 AM
Hi
The phones mark the packets by default, but you need to apply a mls command so the switch can trust the phone marking.
Add on the interface the
mls qos trust
You can see an example config on this link.
Regards
Pedro
02-08-2009 01:12 PM
How is the access layer switch configured? Are the phones directly connected to your lan? What type of switch/line cards are you using?
Worst case scenario can you use MQC to remark RTP?
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