Re: Strange ICP not working problem

Adam Neat wrote:

> we have recently begun rolling out 2.1-pre2 on our devel network.

I hope this is 2.1.PATCH2 and not 2.1.PRE2. PRE releases are unstable
development releases...

Latest stable release is 2.2.STABLE2.

> ICP requests come in from clients and our testing software, but, even though we have the old
...
> in the squid.conf, the icp_queries never actually make it to the parent cache.

ICP queries are not forwarded to parents (or siblings). Only if a HTTP
request is received then Squid generates a ICP request to it's parents.

> The access log file shows the requests coming in, but it always says NONE for the result.

It says NONE in the hierarchy field, since ICP requests is never
forwarded.

> we've done all the usual mods like ACL and the likes, and direct TCP works (from a browser) but still wont go to the parent/sibling caches.

Try repeating the tests using the client program delivered with Squid.
Most people get confused at first when trying to verify things using a
browser. Also note that the ICP peerings in Squid does not work very
well unless Squid is put under some load, so testing with single
requests are likely to fail.

--
Henrik Nordstrom
Spare time Squid hacker