Hi Abdul, Please try to enter 2 different IPs in the DNS .... 10.xxx.yyy.zz1 (proxyA) as primary (proxyA-Name should be same on both the servers.) 10.xxx.yyy.zz2 (proxyA) as secondary. Start squid services on both the servers (Primary & Secondary) If Primary server fails, the DNS will resolve secondary IP for proxyA & the squid on second server will kick in automatically...... Hope am able to explain it properly. Regards, Sagar Navalkar -----Original Message----- From: abdul sami [mailto:sami.memon@xxxxxxxxx] Sent: Monday, June 15, 2009 11:17 AM To: squid-users@xxxxxxxxxxxxxxx Subject: How to setup squid proxy to run in fail-over mode Dear all, Now that i have setup a proxy server, as a next step i want to run it in fail-over high availability mode, so that if one proxy is down due to any reason, second proxy should automatically be up and start serving requests. any help in shape of articles/steps would be highly appreciated. Thanks and regards, A Sami