QoS CBWFQ based on DSCP markings on Procurve

[Steffen Frederiksen]

Hi

We are planning to install Micosoft Communication server, and Office communicater on our clients.
Our users will then make IP-telephony calls through their Office communicater (softphone) on their PC's. Therefore I need to implement QoS to make sure the VoIP calls Quality is good.

AS you can se in this blog: http://voipnorm.blogspot.com/2010/03/enabling-qos-on-ocs-servers-part-1.html
the windows clients can do the DSCP marking. So i just need to trust the DSCP marking thoughout my network (I think so :-))

I'm planning to use a CBWFQ but have no idea how to configure that on HP equipment, (I have only used Cisco equipment before..)

I need the DCSP markings to remain into the packet (frame) thoughout the network and to setup CBWFQ's and have some classed that trust the DSCP values.

I Think it's very difficult to find good documentation on HP's website..

Is there anyone who can explain how it's done? and maybe provide me with a configuration example.

Regards Steffen - Denmark.

[Steffen Frederiksen]

BTW.. Our switche is..

Access switches: 2610 and 4208vl (layer2)

Core siwtches: 5406zl (layer 3)

[Shadow13]

You can check the Advanced traffic management guide for the 2610 and the other switches, there is a chapter for QoS and includes the IP ToS and DSCP.

Basiclly what you need is to enable ToS
Syntax: qos type-of-service diff-services < codepoint >
Causes the switch to read the < codepoint > (DSCP) of an incoming IPv4 packet and, when a match occurs, assign a corresponding 802.1p priority, as configured in the switchâ s DSCP table.

You have to make sure that the DSCP value set by clients are mapped on the switch and 802.1p is configured for them since non-routed traffic will use the 802.1p tagging.

use this to check the mapping:
show qos type-of-service

To map DSCP code to a 802.1p use below:
qos dscp-map < codepoint > priority < 0 - 7 > [name < ascii-string >]
Configures an 802.1p priority for the specified codepoint and, optionally, an identifying (policy) name.

the chapter explains more about this please check it.

[Steffen Frederiksen]

OKay thank you. Can you give a link to "Advanced traffic management guide for the 2610" i can't navigate on the HP websites :-)

[Steffen Frederiksen]

nevermind, i think i have found it:

http://cdn.procurve.com/training/Manuals/2610-AdvTrafficMgmt-Dec2007-59918641.pdf

:-)

[Steffen Frederiksen]

qos dscp-map 101110 name "OCS_VOICE"
qos dscp-map 101110 priority 5
qos dscp-map 100010 name "OCS_VIDEO"
qos dscp-map 100010 priority 4

qos type-of-service diff-services

I have made this configuration on my access switche, where the clients are conneted.

Its it correct?
I'm assigning a priority of 5 (802.1p) to the DSCP value of 101110 and the enable diff-services.

The QoS queues should be setup on the layer 3 devices right? i'm uning cisco as routers..