Use GLBP + HSRP on one Router

Answered Question
Mar 2nd, 2010

We are currently using GLBP on two  routers to load balance the lan traffic between them. However we would like to have one subnet alway use a specific router so it will use a specific route to a backup site. Is it possible to remove that subnet from GLBP and use HSRP on that subnet alone to ensure it will use the specified router except in the case of a loss of the router? Has anyone tried this? Thanks.

Correct Answer by Jon Marshall about 6 years 12 months ago

jeffland_98 wrote:


We are currently using GLBP on two  routers to load balance the lan traffic between them. However we would like to have one subnet alway use a specific router so it will use a specific route to a backup site. Is it possible to remove that subnet from GLBP and use HSRP on that subnet alone to ensure it will use the specified router except in the case of a loss of the router? Has anyone tried this? Thanks.


Jeff


You can use GLBP and HSRP on the same device if that is what you want to do. Or if you do not specify a load-balancing method with the interface command "glbp load-balancing [host-dependant|round-robin|weighted] then GLBP will function as HSRP does anyway.


Edit - with no load-balancing method it is the AVG that forwards traffic.


Jon

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Correct Answer
Jon Marshall Tue, 03/02/2010 - 15:00

jeffland_98 wrote:


We are currently using GLBP on two  routers to load balance the lan traffic between them. However we would like to have one subnet alway use a specific router so it will use a specific route to a backup site. Is it possible to remove that subnet from GLBP and use HSRP on that subnet alone to ensure it will use the specified router except in the case of a loss of the router? Has anyone tried this? Thanks.


Jeff


You can use GLBP and HSRP on the same device if that is what you want to do. Or if you do not specify a load-balancing method with the interface command "glbp load-balancing [host-dependant|round-robin|weighted] then GLBP will function as HSRP does anyway.


Edit - with no load-balancing method it is the AVG that forwards traffic.


Jon

jeffland_98 Wed, 03/03/2010 - 13:20

Jon,


Thanks for the info. I went back and looked and it is in the documentation I have. I just missed it. This should do what we need.


Jeff

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