Application of Internet Cache Protocol (ICP), version 2
Duane Wessels, kc claffy · 1997
This document describes the application of ICPv2 (Internet Cache Protocol version 2, RFC2186) to Web caching. ICPv2 is a lightweight message format used for communication among Web caches. Several independent caching implementations now use ICP[3,5], making it important to codify the existing practical uses of ICP for those trying to implement, deploy, and extend its use.