Squid: The Definitive Guide

Squid's announcement feature allows Squid administrators to find nearby caches that might be interested in joining a cache hierarchy. When you enable this directive, Squid periodically sends a small announcement message to a central server. By default, the announcement message contains five fields:

• The IP address and hostname that sent the announcement

• The Squid version

• The hostname Squid uses internallyeither your hostname if Squid can figure it out or the value of the visible_hostname directive

• The value of the cache_mgr directive

• The date and time of the announcement

Setting announce_period to disables the announcement feature.