Hi, Inside of the access.log should I see something where the data is from the other cache node? Like From SIBLING or something like that ? Or the IP of the other node? Tibby -----Original Message----- From: Zeller, Jan (ID) [mailto:jan.zeller@xxxxxxxxxxx] Sent: Tuesday, September 07, 2010 9:01 AM To: Tóth Tibor Péter; squid-users@xxxxxxxxxxxxxxx Subject: RE: Two squid servers to talk to each other before the internet > -----Original Message----- > From: Tóth Tibor Péter [mailto:tibor.peter.toth@xxxxxx] > Sent: Dienstag, 7. September 2010 08:38 > To: squid-users@xxxxxxxxxxxxxxx > Subject: RE: Two squid servers to talk to each other > before the internet > > Anybody? Any Idea regarding this problem? > How can I check if two Squid nodes are talking to each other? > > Thanks, > Tibby Hi, maybe you can 'tcpdump' the ICP traffic to see what's going on. port is $ grep icp /etc/services icpv2 3130/tcp icp # Internet Cache Protocol icpv2 3130/udp icp --- Jan