On 01/18/2011 12:41 PM, Gerry Reno wrote: > On secondary: > > # tcpdump -i eth0 'port 24007' > tcpdump: verbose output suppressed, use -v or -vv for full protocol > decode > listening on eth0, link-type EN10MB (Ethernet), capture size 96 bytes > ^C > 0 packets captured > 0 packets received by filter > 0 packets dropped by kernel This is the acid test. If no packets are getting between the units on this port, then something is firewalling them. >> and see if you can get anything when you telnet into that port? > On secondary: > > # telnet 10.XXX.58.95 24007 > Trying 10.XXX.58.95... > Connected to 10.XXX.58.95. > Escape character is '^]'. Can you telnet into the secondary on this port from the primary, and let us know what you see when you tcpdump that port on the secondary If you get a connection, and see no packets, then something is badly broken in assumptions about network connectivity. You shouldn't get a connected message if it didn't connect. tcpdump won't lie (as long as the options are correct). -- Joseph Landman, Ph.D Founder and CEO Scalable Informatics Inc. email: landman at scalableinformatics.com web : http://scalableinformatics.com http://scalableinformatics.com/sicluster phone: +1 734 786 8423 x121 fax : +1 866 888 3112 cell : +1 734 612 4615