Hi Rob, That's indeed weird, especially because the issue seems to resolve by itself.
Some things to check: -Can you ping other hosts when this issue happens? -What is the status of the interfaces when it happens? -Maybe the amount of connections tracked hit a limit, you can tune this in /etc/sysctl.conf: # Set the ip_conntrack limit #net.ipv4.netfilter.ip_conntrack_max=65000 There is some documentation about this in the guides, but unfortuanatly I can only find the raw XML document: http://leaf.cvs.sourceforge.net/leaf/doc/guide/user-bering-uclibc/bucu-conntrack.xml?view=markup -Do you ping by name or ip-address? Eric > I've been having a weird situation occur sporadically. The monitors at my > office will show customers as unpingable. > > When they are not pingable, we tracert it to see the point of failure. > The > issue usually shows in the next hop outside my T1 provider. > > Usually by the time I can check it the issue has resolved itself. My T1 > provider says there are no issues. > > Tonight I caught the issue as it happened. I could not ping certain > customers from my office, but I was able to ping them from my home via > charter cable. > > After working with the T1 provider, it looks like it was my leaf box! > (??) > > > While telnet'd into the T1 router (adtran), the T1 tech could ping the > ip's in question. After I booted the firewall, I was able to get to them > as well. > > > I checked dmesg, shorewall.log and messages. I saw nothing that stuck > out. I tried an arp -a. It took approximately 45 seconds to respond with > the info for the T1 router on eth0. > > So...if I catch this again, what should I check next? > > > > ------------------------------------------------------------------------- > Using Tomcat but need to do more? Need to support web services, > security? Get stuff done quickly with pre-integrated technology to make > your job easier Download IBM WebSphere Application Server v.1.0.1 based on > Apache Geronimo > http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 > ------------------------------------------------------------------------ > leaf-user mailing list: [email protected] > https://lists.sourceforge.net/lists/listinfo/leaf-user > Support Request -- http://leaf-project.org/ > > ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 ------------------------------------------------------------------------ leaf-user mailing list: [email protected] https://lists.sourceforge.net/lists/listinfo/leaf-user Support Request -- http://leaf-project.org/
