[c-nsp] HSRP

[Chris Moore]

HSRP provides redundancy and fault tolerance. Load balancing is a bit
stickier. Cisco has documents about how to do it - but it's only a kluge
really. You set up two routers each with two HSRP standby addresses. You
give one router priority for one address, the other priority for the
other address.......then you give half your hosts one address for their
Default Gateway and the other half the second address. 

I guess you could do the same thing w/ VRRP.

The mixed DGs freaked out my sys admins so I abandoned the idea. Of
course DHCP gets a bit tricky for this as well.

Chris

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of McCallum, Robert
Sent: Thursday, May 19, 2005 7:30 AM
To: 'Mad Unix'; cisco-nsp at puck.nether.net
Subject: RE: [c-nsp] HSRP

HSRP = cisco proprietary - no load balancing (requires multiple groups).
VRRP = standards based.
GLBP = gateway load balancing protocol - does what it says on the tin
although oddly.
IRDP = geez now that was a long time ago - client based.

Suggest a google search or a cisco search on these protocols and read
what they do if you want More information.

Robert McCallum 


> -----Original Message-----
> From: Mad Unix [mailto:madunix at gmail.com]
> Sent: 19 May 2005 14:27
> To: cisco-nsp at puck.nether.net
> Subject: [c-nsp] HSRP
> 
> 
> Does HSRP provide Redundancy, fault tolerance and load balancing? What

> is the difference between HSRP, VRRP and GLBP IRDP?
> 
> Thanks
> 
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