In Squid, neighbor usually means the same thing as peer. A neighbor cache is one that you have defined with the cache_host configuration option. Neighbor refers to either a parent or a sibling.
In Harvest 1.4, neighbor referred to what Squid calls a sibling. That is, Harvest had parents and neighbors. For backward compatability, the term neighbor is still accepted in some Squid configuration options.
$Id: FAQ.sgml,v 1.40 1998/08/11 22:34:23 wessels Exp $