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Lan Qos

Posted: 19 Dec 2011 01:37
by ram
Hi Guys,

Can anyone tell me how to configure the lan qos in 6850...? first priority will be voice.please someone help me on this

Re: Lan Qos

Posted: 20 Dec 2011 07:01
by ram
Please help me on this

Re: Lan Qos

Posted: 21 Dec 2011 14:16
by silvio
we need little more informations ....voice in separate vlan?, do you use alcatel-phones? prio in pbx activated?
what do you mean with lan-qos? There are a lot of possibilities depents from your network.
regards
Silvio

Re: Lan Qos

Posted: 22 Dec 2011 19:55
by slixxboy
yes, give some information so that we can answers all your queries regarding in lan qos prio to voice.

Re: Lan Qos

Posted: 23 Dec 2011 10:38
by ram
Hi Silvio,

im going to use alcatel pbx and alcatel phones only and voice will be separate vlan.

Re: Lan Qos

Posted: 24 Dec 2011 05:15
by one6f
Hi,
the configuration depends on the design of the planning network.

One possible option, for example, you can find here.
If your IP phones are able to send out layer 3 DSCP values in the Ethernet frame, it will be configured on the ip phone, for example DSCP value 46.
If the phone is attached to the mobile port then traffic will be prioritized automatically, and you don't need any qos for this.
You need probably only to trust the default port where PBX attached (qos port 1/1 trusted).

Be sure that the communication path for Voice through your network include uplink ports is trusted.
Mobile and 802.1q ports are trusted and do not change the dscp if an trusted packet pass through. You need to trust only default ports/uplinks.

To verify dscp value use wireshark. DSCP will not be changed through trusted path!

Here is another good explanation for Voice recommendations with config examples. Please use search button to find more details.