WCCP v2 supported features

Content Gateway supports the following WCCP v2 features:

• Multiple routers in a proxy cluster
• Multiple ports per service group
• Multiple service groups per protocol. Sometimes it is necessary or convenient to have different service groups for different WCCP devices. For example, for Cisco ASA firewall, different service groups are required for each WCCP device in the network.
• Dynamic load distribution in a cluster through assignment method HASH or MASK. See WCCP load distribution.
• Packet Return Method and Packet Forward Method negotiation
• MD5 password security per service group
• Multicast mode

In a Content Gateway cluster, it is recommended that you not enable virtual IP failover in WCCP environments. WCCP v2 and the Content Gateway configuration handles node failures and restarts. (See WCCP load distribution and Virtual IP failover.) However, if a Content Gateway cluster uses WCCP exclusively, virtual IP failover can be used if no user authentication features are used. Note that the WCCP assignment method — not virtual IP failover — is the recommended method for managing load distribution. If a Content Gateway cluster receives requests both explicitly and transparently (the networks must be separate; this type of deployment is not recommended), virtual IP failover can be used on the explicit proxy network segment.