QoS for VoIP on ICX switches

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Hello all,

I'm trying to set up some basic QoS functionality on a number of ICX7150 switches.  I have all of my phones in a particular vlan and would like to have the switch mark any incoming packets on that vlan with an appropriate DSCP value.  I thought that the command to do this was ip-dscp-remark 46, on the vlan in question.  But this doesn't apply to the vlan, but rather the whole switch.  

Anybody have any idea on how to do this?
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Chris Everett

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Posted 3 months ago

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Photo of Paul McGuire

Paul McGuire

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You should only need “trust dscp” on each port that has a phone.
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NETWizz

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Paul is correct provided the phone marks the DSCP value on the packets.  If not, there really is not much of a way to create classes and queues in the ICX environment.
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Yorix

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For VoIP I use these settings:

lldp med network-policy application voice tagged vlan <vlan_for_voice> priority 7 dscp 46 ports ethe 1/1/x to 1/1/xx
lldp med network-policy application voice-signaling tagged vlan <vlan_for_voice> priority 7 dscp 42 ports ethe 1/1/x to 1/1/xx

And on each ports, I have :

 loop-detection
 dual-mode  <vlan_for_workstation>
 spanning-tree root-protect
 spanning-tree 802-1w admin-edge-port
 inline power power-by-class 2
 voice-vlan <vlan_for_voice>
 stp-protect
 broadcast limit 12000
 unknown-unicast limit 10000
 stp-bpdu-guard
 trust dscp