Amos, We used this example from the wiki: http://wiki.squid-cache.org/Features/CacheHierarchy We can see a sibling/sibling archi is possible, right ? Here, we can not have a "cache_peer parent" archi as the tproxy (original user ip) will be lost at the parent level, you wrote this in a previous post I did. So, we must have a sibling/sibling with the 2 squid servers, both in tproxy. Now, if there is a better archi and correct settings to build a tproxy/sibling-sibling archi, please share My ISP is nice and I can arrange that with him... Thanks in advance. Fred -- View this message in context: http://squid-web-proxy-cache.1019090.n4.nabble.com/TCP-MISS-504-in-cache-peer-tp4671944p4671966.html Sent from the Squid - Users mailing list archive at Nabble.com. _______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx http://lists.squid-cache.org/listinfo/squid-users