Hello all Let me preface this by stating I am far from being a Squid expert so please bear with me. We have what is probably an easy one. Some Windows servers use a locally installed Squid proxy instance for all outbound traffic. These servers also make use of some F5 GTM (DNS) servers to provide a resilient inter-DC DNS topology. Essentially what should happen is under steady state conditions any DNS request should be given IP address a.a.a.a, then under failure be given b.b.b.b. The GTM DNS TTL is 30 seconds. What we’re finding is that even after 5 mins of failure any HTTP request from IE (configured with the Squid proxy) still targets a.a.a.a and traffic is dropped. During this period if we remove the Squid proxy from the IE settings, it works as now we target b.b.b.b. So clearly some sort of caching, possibly DNS, is being done on the Squid. Where is a good place to start on Squid to troubleshoot this, Thank you -- Sent from: http://squid-web-proxy-cache.1019090.n4.nabble.com/Squid-Users-f1019091.html _______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx http://lists.squid-cache.org/listinfo/squid-users