QoS with Managed Switch

[Retro2001]

I currently have a network setup that looks like this (2 public IPs):

DSL Modem ----- > Switch
................................./.........
........................Router.....VoIP

I need to do some very basic QoS so that the VoIP traffic takes precidence over the network traffic coming from the router. It seems like the Dell PowerConnect 2708 will do this with Port Based VLAN / QoS. I'm hoping that someone here can confirm or correct my thoughts.

Thanks!

Will

 

[Cooky]

Perhaps you can call Dell and find out.
I'd like to know it too so ... anyone?

 

[mfriedkin]

Originally posted by: Retro2001
I currently have a network setup that looks like this (2 public IPs):

DSL Modem ----- > Switch
................................./.........
........................Router.....VoIP

I need to do some very basic QoS so that the VoIP traffic takes precidence over the network traffic coming from the router. It seems like the Dell PowerConnect 2708 will do this with Port Based VLAN / QoS. I'm hoping that someone here can confirm or correct my thoughts.

Thanks!

Will

----------------------------------------------------------------------------------------------
Will:

You can do prioritization of the voice packets a couple of ways on the Dell 2708. One way is to see if the VOIP phone itself can be set to utilize the 802.1p bit, and set that bit to 6 or 7, which will direct the voice packets to q4, which is the highest priority queue on that switch.

The othe way is not easy at all on the Dell switch. You must set up a clasifier, which means that you must know quite a bit about your VOIP packet structures. After you set up the classifier, the switch will examine every packet to determine if that packet meets the classifier's criteria, it will then tag that packet with the 802.1p, (which is part of the 802.1Q standard), with the bit value you set up in the classifier. Select 6 or 7 and it will go to q4, and be priortised.

The first option is the best and easiest, as for most all VOIP systems I have worked with, the 802.1p bit can be set at the call manager or the sip proxy for the endpoints. Then automatic switch operations will pass the VOIP packets first.

Good Luck..

M

 

[imported_Dimicron]

Don't know if it'll help you, buy my Linksys WRT54GS with the latest firmware will do QoS by either the Port you are plugged in to, MAC Address, or IP address. I'd think Dell would have a firmware update at the least that could enable it for your setup.