need for a Layer7 class-map

Unanswered Question
Jul 6th, 2009

We're in the process of configuring a load balancing to the farm on the ACE module. We have been given the VIP and the port (80) in conjunction with the VIP. Do we need to configure a Layer7 class-map first and then a Layer3-4 class-map or just a Layer3-4 class-map for this?

thanks..

I have this problem too.
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dario.didio Mon, 07/06/2009 - 23:57

Hi,

all depends on how you want to loadbalance.

If you just want to loadbalance layer4, this is to loadbalance all requests send to the VIP and the port, you don't need a L7 classmap.

If you want to use layer7 functionality like HTTP header loadbalancing, then you need to use a L7 classmap.

This is an example of a L4 loadbalancing config:

http://docwiki.cisco.com/wiki/Basic_Load_Balancing_Using_Routed_Mode_on_the_Cisco_Application_Control_Engine_Configuration_Example

This is an example of a L7 loadbalancing config:

http://docwiki.cisco.com/wiki/URL_Load_Balancing_Using_Routed_Mode_on_the_Cisco_Application_Control_Engine_Configuration_Example

Pls rate if this was useful for you.

HTH,

Dario

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