Technical data

36 ServerIron ADX Advanced Server Load Balancing Guide

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Configuring transparent cache switching

Transparent cache switching (TCS) is disabled by default. To set up TCS, perform the following

tasks:

1. Assign a name and IP address to each web cache server.

2. Configure port to each web cache server.

3. Configure cache server group and include previously configured cache servers under different

cache groups.

NOTE

IPv4 cache servers and IPv6 cache servers must be included under different cache groups.

4. Enable TCS. Refer to “Enabling transparent cache switching” on page 40.

NOTE

You cannot enable the web cache feature on both a global (switch) and local (interface) basis.

5. Assign an interface to a cache group (optional).

6. Define distribution of web requests within a cache group (optional).

7. Modify default settings for TCS parameters (optional).

8. Save the configuration to flash.

Configuration notes

Consider the following:

• Once TCS is enabled on a switch, all ports on the switch are members of cache group 1 by

default.

• You can configure up to 14 cache groups.

• Up to 256 web cache servers can be configured per cache group.

• Web cache servers must be members of a cache group.

NOTE

A single ServerIron ADX can provide transparent cache switching for up to 256 web cache

servers per cache group.

TABLE 3 Required CAM programming for VIPs with reverse proxy SLB enabled

Level Match Hash

1 Destination IP = cache enabled

VIP

Source IP address

2 Source IP = cache enabled VIP Destination IP address

3 Destination port = cache port Source IP address

4 Source port = cache port Destination IP address