Hi, Thank you for the answer and all the details you gave. The 'sibling' lacking in my conf file was a typo, sorry about that. Ok, so If I understand well, there is no way to tell a squid instance there are preferred siblings among its peer pool? Actually, The reason why I'm doing this is to do more than the RTT-based 'load-balancing' mechanisms provided by ICP. It takes place in another context. Joachim -- View this message in context: http://squid-web-proxy-cache.1019090.n4.nabble.com/Sibling-selection-algorithm-weight-tp4665944p4665947.html Sent from the Squid - Users mailing list archive at Nabble.com.