Troubleshooting guide

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Cisco Wide Area Application Services Configuration Guide
OL-26579-01
Chapter 1 Configuring Traffic Interception
Configuring WCCP on WAEs
Step 4 From the Interception Method drop-down list, choose wccp to enable the WCCP interception method.
If you change this setting from any setting other than None, you must click the Submit button to update
the window with the proper fields for configuring WCCP. (The Interception Method drop-down list is
not shown for devices using WAAS versions earlier than 5.0.)
Step 5 Check the Enable WCCP Service check box to enable WCCP Version 2 on the chosen device, or
uncheck the check box to disable WCCP on the chosen device.
Note Ensure that the routers used in the WCCP environment are running a version of the Cisco IOS
software that also supports the WCCP Version 2.
Note If you use the Central Manager to disable WCCP on a WAAS device, the Central Manager
immediately shuts down WCCP and closes any existing connections, ignoring the setting
configured by the wccp shutdown max-wait global configuration command. If you want to
gracefully shut down WCCP connections, use the no enable WCCP configuration command on
the WAAS device.
Step 6 In the Service ID1 field, specify the first service ID of the WCCP service pair. After you submit, the
Service ID2 field is filled in with the second service ID of the pair, which is one greater than Service
ID1. For WAEs with version 4.4.1 or later, you can change the WCCP service IDs from the default of
61/62 to a different pair of numbers, which allows a router to support multiple WCCP farms because the
WAEs in different farms can use different service IDs. (The Service ID fields are not shown for devices
using WAAS versions earlier than 4.4 and the service IDs are fixed at 61/21.)
The router service priority varies inversely with the service ID. The service priority of the default service
IDs 61/62 is 34. If you specify a lower service ID, the service priority is higher than 34; if you specify
a higher service ID, the service priority is lower than 34.
Step 7 Check the Use Default Gateway as WCCP Router check box to use the default gateway of the WAE
device as the router to associate with the WCCP TCP promiscuous mode service. Alternatively, you can
uncheck this box and specify a list of one more routers by their IP addresses, separated by spaces. The
Central Manager assigns the router list number, which is displayed next to the router list field after the
page is submitted. As part of the initial configuration of your WAAS network, you may have already
created a WCCP router list with the setup utility, as described in the Cisco Wide Area Application
Services Quick Configuration Guide. For more information about WCCP router lists, see the
“Configuring and Viewing WCCP Router Lists for WAEs” section on page 1-26.
Note Checking or unchecking this check box, changing the router list, or submitting the WCCP page
removes any other existing router lists that are not assigned to the WCCP service, including
router lists configured by the setup utility or through the CLI.
Step 8 (Optional) To force WCCP to use the configured assignment method only, check the Only Use Selected
Assignment Method check box. You can specify only one load-balancing method (hashing or masking)
per WCCP service in a branch WAE service group. (This check box is shown only for devices using
WAAS versions earlier than 4.4.)
Note If you check the Only Use Selected Assignment Method check box, the WAE only joins a WCCP
farm if the assignment method configured on the WAE is supported by the router. If you do not
check the Only Use Selected Assignment Method check box, the WAE uses the assignment
method that the router supports, even if the WAE is configured differently from the router.