Cisco ACE-4710-K9 Administration Guide - Page 177
Layer 7 Load-Balancing Example
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Chapter 4 Configuring Class Maps and Policy Maps Class Maps and Policy Map Examples Layer 7 Load-Balancing Example This example shows how to create a Layer 7 load-balancing traffic policy that enables the following processes to occur on the ACE: • Load balances traffic to the SPORTS-SERVER and NEWS-SERVER server farms based on the following criteria: - HTTP header and header value expression - URL expression • Classifies the 3-tuple flow of the VIP address, protocol, and port as matching criteria for server load balancing • Utilizes an HTTP parameter map to enable HTTP persistence Perform the following steps: Step 1 Step 2 Step 3 Create a Layer 7 class map that defines an HTTP header and header value expression string and URL expression for load balancing to the SPORTS-SERVER server farm. host1/Admin(config)# class-map type http loadbalance match-all SPORTS-MAP_CLASS host1/Admin(config-cmap-http-lb)# match http header host header-value .*test.com host1/Admin(config-cmap-http-lb)# match http url /sports/ host1/Admin(config-cmap-http-lb)# exit Create a Layer 7 class map that defines a URL expression for load balancing to the NEWS-SERVER serverfarm. host1/Admin(config)# class-map type http loadbalance NEWS-MAP_CLASS host1/Admin(config-cmap-http-lb)# match http url /news/ host1/Admin(config-cmap-http-lb)# exit Create a Layer 7 server load-balancing policy by entering the following commands: host1/Admin(config)# policy-map type loadbalance first-match L7_SLB_POLICY host1/Admin(config-pmap-lb)# class SPORTS-MAP_CLASS host1/Admin(config-pmap-lb-c)# serverfarm SPORTS-SERVER host1/Admin(config-pmap-lb-c)# exit host1/Admin(config-pmap-lb)# class NEWS-MAP_CLASS host1/Admin(config-pmap-lb-c)# serverfarm NEWS-SERVER host1/Admin(config-pmap-lb-c)# exit OL-11157-01 Cisco 4700 Series Application Control Engine Appliance Administration Guide 4-63