WCCP service group states

Products

ProxySG Software - SGOS

Issue/Introduction

This article explains the different service group states involved in WCCP (Web Cache Communication Protocol) establishment and the description for each state. The state of a service group helps you monitor whether the service group was configured properly and how it is functioning. Understanding what each state denotes is very helpful while troubleshooting WCCP communication errors.

Resolution

State	Description
Assignment mismatch	The router does not support the assignment type (hash or mask) that is configured for the service group.
Bad router id	The home-router specified in the service group configuration does not match the actual router ID.
Bad router view	The list of ProxySG appliances in the service group does not match.
Capability mismatch	The WCCP configuration includes capabilities that the router does not support.
Initializing	WCCP was just enabled and the ProxySG is getting ready to send out its first HERE_I_AM message.
Interface link is down	The ProxySG cannot send the HERE_I_AM message because the interface link is down.
Negotiating assignment	The ProxySG received the I_SEE_YOU message from the router but has not yet negotiated the service group capabilities.
Negotiating membership	The ProxySG sent the HERE_I_AM message and is waiting for an I_SEE_YOU message from the router.
Packet forwarding mismatch	The router does not support the forwarding method (GRE or L2) that is configured for the service group.
Packet return mismatch	The router does not support the return method (GRE or L2) that is configured for the service group. Note that on the ProxySG, the return method is always the same as the forwarding method.
Ready	The service group formed successfully and the ProxySG sent the REDIRECT_ASSIGN message to the router with the hash or mask values table.
Service group mismatch	The router and the ProxySG have a mismatch in port, protocol, priority, and/or other service flags.
Security mismatch	The service group passwords on the router and the ProxySG do not match.

To view the state information of WCCP, Navigate to Configuration -> Network -> WCCP as shown in the following snapshot. For more information pertaining to the service group, navigate to Statistics -> Network -> WCCP.