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After you determine where you want to put the Cache Engine, follow these steps to complete the Cache Engine installation:
1. Collecting the Information Required for Configuration.
2. Installing the Cache Engine.
3. Initializing the Cache Engine Configuration.
4. Enabling Cache Support on the Router.
Read the Regulatory Compliance and Safety Information document that came with the Cache Engine before you begin the installation.
 | Warning Read the installation instructions before you connect the system to its power source. |
Before you install the machine, collect the following information required for the basic configuration:
| Warning
The device is designed to work with TN power systems. |
| Warning The ports labeled "Ethernet," "10BaseT," "Token Ring," "Console," and "AUX" are safety extra-low voltage (SELV) circuits. SELV circuits should only be connected to other SELV circuits. Because the BRI circuits are treated like telephone-network voltage, avoid connecting the SELV circuit to the telephone network voltage (TNV) circuits. |
| Warning This product relies on the building's installation for short-circuit (overcurrent) protection. Ensure that a fuse or circuit breaker no larger than 120 VAC, 15A U.S. (240 VAC, 10A international) is used on the phase conductors (all current-carrying conductors). |
| Warning This equipment is intended to be grounded. Ensure that the host is connected to earth ground during normal use. |
| Warning Do not work on the system or connect or disconnect cables during periods of lightning activity. |
| Warning Before working on equipment that is connected to power lines, remove jewelry (including rings, necklaces, and watches). Metal objects will heat up when connected to power and ground and can cause serious burns or weld the metal object to the terminals. |
Refer to Figure 2-1 and Figure 2-2 when installing the engine, to help you identify the connectors on the back and front of the engine.
To install the Cache Engine:
Step 1 Place the Cache Engine unit in the desired location. You can mount it on a rack for your convenience, or place it on a solid, stable surface. Figure 2-3 shows how to attach the mounting brackets. You will need a Phillips-head screwdriver.
Step 2 Plug in the Cache Engine.
Step 3 Plug the network connection into the Ethernet port on the Cache Engine.
Step 4 Plug the console into the Console port on the Cache Engine using the supplied serial cable. Open a window for the engine console using your terminal emulation program.
Step 5 Turn on the Cache Engine. The Cache Engine begins booting, and sends messages to the console window. Once the operating system boots, you are ready to initialize the basic configuration.
To initialize the Cache Engine's basic configuration once it has booted the operating system:
Step 1 Enter values for these parameters as you are prompted:
Step 2 If the basic configuration is acceptable, enter y. The Cache Engine indicates whether the configuration is accepted. At this point, the basic configuration is finished.
Step 3 Once you have entered an acceptable basic configuration, the Cache Engine displays the URL that you would use to connect to it with a web browser. For example, http://10.1.1.1 . You must use the complete URL to connect to the machine and manage it.
The user name is admin and the password is supplied by the user on the Login window.
Before the router can use the Cache Engine, it must know that the Cache Engine exists. This notification is done automatically by communications between the engine and the router. However, you must enable cache support in the router so that the router knows to listen for the Cache Engine.
If you later want to disable caching temporarily, you can do so by disabling cache support in the router, rather than by turning off or otherwise disabling the individual Cache Engines. (Use the no ip wccp command on the router to disable caching.)
You must already know how to configure the router to make these configuration changes. If you do not know how to configure the router, consult the Cisco IOS documentation supplied with the router. Detailed information for the commands mentioned here is in the Cisco IOS documentation. See Appendix C, Web Cache Communication Protocol Version 1, and Appendix D, Web Cache Communication Protocol Version 2, for information on which IOS software supports which version of WCCP on which platform.
To enable cache support on the router for WCCP Version 1:
Step 1 Ensure that the router is running a release of the Cisco IOS software that includes WCCP Version 1. If it does not have this support, before you can continue, you must upgrade the Cisco IOS software.
IOS versions before 12.0(3)T support only WCCP Version 1. IOS versions between 12.0(3)T and 12.0(5)T support only WCCP Version 2. IOS version 12.0(5)T or later support both WCCP Version 1 and Version 2. In IOS version 12.0(5)T or later, the default WCCP version is Version 2. You can override the WCCP default, by using the global configuration command ip wccp version 1.
If you have WCCP Version 1 configured and attempt to configure any WCCP Version 2 specific features, you will receive a configuration error.
ip wccp enable
For example, to enable redirection, enter:
ip web-cache redirect
You can confirm your settings using the following show commands on the router:
To enable cache support on the router for WCCP Version 2:
Step 1 Ensure that the router is running a release of the Cisco IOS software that includes WCCP Version 2. If it does not have this support, before you can continue, you must upgrade the Cisco IOS software.
In global configuration mode, use the ip wccp command to enable cache support. For example, enter:
ip wccp web-cache
For example, to enable redirection, enter:
ip wccp web-cache redirect out
You can confirm your settings using the following show commands on the router:
Once you have installed and configured the Cache Engine, and enabled caching on the home router, check to ensure the Cache Engine is working properly:
Step 1 From a machine on a network that uses the home router, start a web browser and open various web pages on the Internet or your intranet. The web servers you connect to must be on a different subnet, so that the request goes through the home router. Connect to some pages more than once, to ensure that some pages you request are in the cache.
Step 2 Connect to the Cache Engine's home page, and click Status. There should be activity shown for the Cache Engine.
Step 3 Use Telnet to connect to the home router, and enter the show ip wccp web-caches command to display information about the Cache Engines. The entry for the Cache Engine should show a number greater than 0 for Packets Redirected.
If the router shows that no packets are being redirected to the Cache Engine, you need to troubleshoot your setup. See "Troubleshooting the Cache Engine" for more information.
You can manage the Cache Engine using the CLI or the Cache Engine management interface. To connect to the Cache Engine's management interface:
Step 1 Start a web browser on a machine that has access to the network on which the Cache Engine resides.
Step 2 Open the URL for the Cache Engine, using the URL given to you during the basic configuration. For example, http://10.1.1.1:8001. You must include the port number, such as 8001, in the URL.
You are prompted for a username and password.
Step 3 Enter a correct username and password. The Cache Engine returns the initial management page, which contains links to other management pages.
If you forget your password, you must have another administrator reset your password.
Posted: Sat Sep 28 02:31:26 PDT 2002
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