[cisco-voip] IOS VG Link redundancy

[Jason Aarons (US)]

HSRP has been replaced by GLBP in the Cisco Advanced Services configs I
see.  These are large routed networks also using WCCP/WAAS with mostly
6500s/Sup720s back to ISR 3800s. I can't clarify why, but understand it
has something to do with WAAS usually.

 

http://www.ciscoblog.com/archives/2006/04/hsrp_vs_vrrp_vs.html

 

 

From: Nikola Stojsin [mailto:nikolastojsin at gmail.com] 
Sent: Monday, January 26, 2009 8:42 PM
To: 'Brandon Bennett'; Jason Aarons (US)
Cc: cisco-voip at puck.nether.net
Subject: RE: [cisco-voip] IOS VG Link redundancy

 

As long as you do not need load balancing between voice gateways, HSRP
would work really well here, I think. I do not know what your OSPF
topology looks like, but something along the lines of HSRP with totally
stubby OSPF area would be my choice here. It is about as simple as it
gets.

 

 If you do need load balancing, you can use Multigroup HRSP
(http://www.cisco.com/en/US/tech/tk648/tk362/technologies_configuration_
example09186a0080094e90.shtml), with one caveat: some NICs cannot handle
multiple MAC addresses, so, depending on the router model, MHRSP may or
may not work.

 

Actually, it would be interesting to see which - HSRP, OSPF or EIGRP -
would converge/failover the fastest.

 

HTH,

Nikola

 

 

 

 

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Nikola Stojsin

PhD CCIE #12888

President

Network Makers LLC

110 Wall Street, 11th Floor

New York, NY 10005

(212) 709-8201

(212) 706-2986 (fax)

nikolas at networkmakers.com <mailto:nikolas at networkmakers.com> 

-------------------------------------------

 

From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Brandon Bennett
Sent: Monday, January 26, 2009 7:38 PM
To: Jason Aarons (US)
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] IOS VG Link redundancy

 

 

	What makes you want to change it?


Well it's mostly a political thing.  We are trying to remove the network
team from the gateways and remove the voice team from the network.

Also 12.4(15)T8 which is required for our CVP install has proven itself
so completely unstable that the idea of having it in my routing domain
scares me and probably the less services running on it the better.

I am doing max-metric, and a separate OSPF area for the VGs so that they
will never try to route traffic not for them, but it seems to me there
should be a better way to have an IOS device that doesn't have to
participate with a RP with the rest of the network.

-Brandon




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