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Okay whats is the difference between these features

It seems in the IOS that there is some overlap between the following protocols

HSRP

VRRP

GLBP

It seems that VRRP is an upgrade to HSRP and GLBP also.

Is there a document map comparing all three and the proper uses seperately or combined?

Thanks...

1 REPLY
Bronze

Re: Okay whats is the difference between these features

"GLBP performs a similar, but not identical, function for the user as the HSRP and the VRRP. HSRP and VRRP protocols allow multiple routers to participate in a virtual router group configured with a virtual IP address. One member is elected to be the active router to forward packets sent to the virtual IP address for the group. The other routers in the group are redundant until the active router fails. These standby routers have unused bandwidth that the protocol is not using. Although multiple virtual router groups can be configured for the same set of routers, the hosts must be configured for different default gateways, which results in an extra administrative burden. GLBP provides load balancing over multiple routers (gateways) using a single virtual IP address and multiple virtual MAC addresses. Each host is configured with the same virtual IP address, and all routers in the virtual router group participate in forwarding packets."

Check out the link below:

http://www.cisco.com/en/US/products/sw/iosswrel/ps1839/products_feature_guide09186a00801541c8.html

HTH.

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