Date: Thu, 7 May 1998 11:11:31 -0600 (MDT) From: Clod Baldrick <baldrick@rmsq.com> To: Doug White <dwhite@resnet.uoregon.edu> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: Bizarre routing problem Message-ID: <Pine.BSF.3.95q.980507111019.26243A-100000@corsair>
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I know it's bad form to follow-up to my own post, but I've got some more data that looks fairly useful. Doug White wrote: > Okay, that helps quite a bit -- we know that the packets aren't getting > there. Now the question is if they are being sent and if they are, where > are they going?? > > I *really* need to see this from tomcat's point of view. Try to find a > quiet moment and sneak a reboot in. lancaster$ ping tomcat PING tomcat (130.13.21.92): 56 data bytes tomcat# tcpdump -i ed2 host lancaster and not host corsair tcpdump: listening on ed2 11:02:42.566674 lancaster > tomcat: icmp: echo request 11:02:42.566746 tomcat > lancaster: icmp: echo reply 11:02:42.626639 lancaster > tomcat: icmp: echo request 11:02:42.626692 tomcat > lancaster: icmp: echo reply 11:02:43.566685 lancaster > tomcat: icmp: echo request 11:02:43.566749 tomcat > lancaster: icmp: echo reply 11:02:43.626636 lancaster > tomcat: icmp: echo request 11:02:43.626688 tomcat > lancaster: icmp: echo reply 11:02:44.566655 lancaster > tomcat: icmp: echo request 11:02:44.566717 tomcat > lancaster: icmp: echo reply 11:02:44.626606 lancaster > tomcat: icmp: echo request 11:02:44.626659 tomcat > lancaster: icmp: echo reply 11:02:45.566578 lancaster > tomcat: icmp: echo request 11:02:45.566641 tomcat > lancaster: icmp: echo reply 11:02:45.626568 lancaster > tomcat: icmp: echo request 11:02:45.626620 tomcat > lancaster: icmp: echo reply ^C 92 packets received by filter 0 packets dropped by kernel If I read this right, packets from lancaster are successfully getting through to tomcat, which is correctly sending out ICMP responses. But these responses don't get through to lancaster. And when tomcat pings lancaster, the ICMP echo requests don't get through either. That seems to account for the symptoms we're seeing. That probably means that the problem is with Linux. So does anyone have any suggestions before I go off and ask in a Linux forum? -- Clod Baldrick RMS, Longmont CO To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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