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CHAPTER

6-1

Catalyst 6500 Series Content Switching Module Configuration Note

OL-4612-01

Configuring Virtual Servers, Maps, and Policies

This chapter describes how to configure content switching and contains these sections:

• Configuring Virtual Servers, page 6-1

• Configuring Maps, page 6-8

• Configuring Policies, page 6-11

• Configuring Generic Header Parsing, page 6-12

Configuring Virtual Servers

This section describes how to configure virtual servers and contains these sections:

• Configuring TCP Parameters, page 6-4

• Configuring Redirect Virtual Servers, page 6-5

Note When a virtual server is configured with an IP address, it will start replying to ARP requests for that

specific IP, even if it is still out of service. This is important especially when migrating operational

virtual servers from existing devices over to the CSM. Make sure that you never have a virtual server on

the CSM configured with the same IP of another device in the same network.

Virtual servers represent groups of real servers and are associated with real server farms through

policies. Configuring virtual servers requires that you set the attributes of the virtual server specifying

the default server farm (default policy) and that you associate other server farms through a list of

policies. The default server farm (default policy) is used if a request does not match any SLB policy or

if there are no policies associated with the virtual server.

Before you can associate a server farm with the virtual server, you must configure the server farm. For

more information, see the “Configuring Server Farms” section on page 5-1. Policies are processed in the

order in which they are entered in the virtual server configuration. For more information, see the

“Configuring Policies” section on page 6-11.

You can configure each virtual server with a pending connection timeout to terminate connections

quickly if the switch becomes flooded with traffic. This connection applies to a transaction between the

client and server that has not completed the request and reply process.

In a service provider environment in which different customers are assigned different virtual servers, you

may need to balance the connections to prevent an individual server from absorbing most or even all of

the connection resources on the CSM. You can limit the number of connections going through the CSM

Cisco Catalyst 6500 Series Configuration Note

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