[cisco-voip] Redundancy -- Quality of Voice -- QoS vs RSVP

[Wellnitz, Erick A.]

That’s kind of what I would like to know.  Is it worth the trouble of configuring RSVP?   Advantages?  Disadvantages?

What would be the use case for implementing it?

In our situation, calls must complete and be of good quality.   I need to be able to steer management (which already has determined they want RSVP) to the correct solution for our needs.

From: Jason Aarons (AM) [mailto:jason.aarons at dimensiondata.com]
Sent: Friday, June 24, 2011 10:36 AM
To: Wellnitz, Erick A.; Scott Voll; cisco-voip at puck.nether.net
Subject: RE: [cisco-voip] Redundancy -- Quality of Voice -- QoS vs RSVP

So if the bandwidth isn’t available to be reserved will you display a out of bandwidth message on phone and have them wait? Or AAR?  Just trying to understand what happens without it and how adding it will make things better.  Will the MKQ score be better for existing calls, not allowing new calls that overwhelm the link?

From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Wellnitz, Erick A.
Sent: Friday, June 24, 2011 11:03 AM
To: Scott Voll; cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] Redundancy -- Quality of Voice -- QoS vs RSVP


Great question.  We have a similar topology to Scott’s  and once we have all of our offices converted to Cisco VoIP we will be looking at RSVP to maintain quality.  We attempted it before on 6.1.2 but we never got it working.

From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Scott Voll
Sent: Friday, June 24, 2011 9:43 AM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] Redundancy -- Quality of Voice -- QoS vs RSVP

OK, so I'm feeling a little behind the ball.  I've always had a hub and spoke network, but now we are looking at redundant networks to keep up time to the 5 9's or better.

I'm looking at using our internet connections via VPN to backup your current MANs.

eg.  remote site -- MAN -- Hub
        | ---- Internet VPN ----|

beyond the Routing / VPN it sounds like I should be using RSVP rather than CAC and QoS.  Has anyone setup RSVP?  I'm currently on CM 7.1 but If I'm thinking correctly, I need 8.5 or 8.6 to get RSVP working with CM.

What other things am I forgetting?

What have others found with RSVP?  Good, bad, or other.

TIA

Scott


itevomcid

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