WCCPv1:
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1. Only single router can participate in a cluster of WCCP-capable devices
2. Intercepts and redirects HTTP and HTTPS
3. Does not allow load balancing

WCCPv2:
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1. Supports multiple routers can redirect to clusters and devices, allows for load balancing.
2. Support for non HTTP and HTTPS protocols such as other TCP or UDP packets.
3. Capable of MD5 authentication.
4. Notification capabilities for web cache overloading to the router
5. Load Balancing based on hashing or masking algorithms