meameame12
3 posts

Hi. I have to deploy, company-wide, QoS on Avaya 9650 VoIP phones. Our environment consists of primarily Cisco 3560 PoE switches, 4507 Cat Switches, 6509 Native OS w/ MSFC, 1841 router, and a few 7200 routers.

We also, in many cases, run our remote sites IPSec over GRE back to the HQ. The primary site is MPLS. Looks kinda like this:

5 locations total

2 of the sites have 1 1841 router, 2 3560 switches, and both sites connect back to HQ for internet, intranet, etc., via IPSec GRE. In short, no managed router, no MPLS for these guys.

2 of the sites have 1 managed router for MPLS and 1 unmanaged router for Internet. Each has 3 3560 switches.

1 site (the HQ) has 2 6509s, 2 4507s, approximately 10 3560s, 1 2811, 1 1841, and 2 7200 routers. These 2 7200 routers are managed by an ISP. 1 of the 7200s is for MPLS, 1 is for Internet.

The IP OFFICE BOX 500 is located at each site, and uses a PRI hand-off to the Internet, but the LAN side connects to our switch. End users can connect, we have vlans set up for VoIP, etc.

The issue is QoS.

First, I do not think that 4507 nor 6509 supports QoS in its native mode. Second, i cannot use the sw voice vlan command because these phones are Avaya and not VoIP. Third, i dont think i want to trunk the interfaces b/c of extra traffic coming across. Fourth, ive yet to see a design guide for QoS with respect to Avaya on the various devices or technologies. The IGP we run at HQ is EIGRP.

Any pointers?

booger19a
14 posts

If your network bandwidth needs are stable, you may not need QOS. No one from Avaya or Cisco will ever tell you this but you only need QOS if your links ever fill to their capacity. A good question to ask yourself is, do my links run at capacity? or close to capacity? If they're fairly unused you may not need QOS. Just my 2 cents though.
I remember reading about a university that simply upgraded their links when they noticed that they were something like 25-30% utilized. They figured it was cheaper than implementing QOS. (I believe this was Berkeley so it wasn't a little community college. It was a fairly large university.)
This might save you many many days & nights of headache. :) Also, you can't QOS any bandwidth you receive from the 'internet' at large. If all your sites are connected by a single provider, ATT for example, they may be able to sell you QOS services across their backbone. You simply can't QOS the 'internet'.

hth

meameame12
3 posts

no, we def need it. almost always, lans dont need qos but almost always wans do.

we have 10 voip phone deployed, and the quality is not good to begin with.

no qos over internet but qos over ipsec gre tunnels--which traverse the internet.

that is what i need.

in fact i need a generic template for avaya 9650 voip phones working with L2/L3 Cisco devices....

porod
1 post

We use the switchport voice vlan command all the time with avaya ip phones.

Viewing 1 - 4 of 4

  • 1