Hi Squid users. I am having following problem with squid acting as reverse proxy. 1. Origin Server ===> Cache Server ( Squid ) ===> [Client] 2. Origin Server Dead at AM 04:00 Origin Server =X=> Cache Server ( Squid ) ===> [Client] Log message like this. 2007/07/05 04:32:08| TCP connection to 2.2.2.2/80 failed 2007/07/05 04:32:08| Detected DEAD Parent: 2.2.2.2 2007/07/05 04:32:09| TCP connection to 2.2.2.2/80 failed 2007/07/05 04:32:57| Failed to select source for 'http://www.abc.com/game4225' 2007/07/05 04:32:57| always_direct = 0 2007/07/05 04:32:57| never_direct = 0 2007/07/05 04:32:57| timedout = 0 3. And then Origin Server is revived at AM 05:00 Origin Server ===> Cache Server ( Squid ) ===>[Client] But Client could not connect server. Because squid did not know about Origin Server was live. Client can connect squid after follow command : 'squid -k reconfigure' How can do squid automatically detect Origin Server's condition about LIVE or DEAD ? PS. Squid version is 2.6. STALBE 12.