Thanks. That solved the problem. I will turn this over to network support and let them figure out where along the route the problem lies.
James Johnson Email: [EMAIL PROTECTED] Systems Programmer Voice: 660-543-8065 Central Missouri State University Fax: 660-543-8123 ----- Original Message ----- From: "Post, Mark K" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Friday, February 21, 2003 2:34 PM Subject: Re: Routing question > James, > > Sorry for the two replies, but I forgot one important point. You should be > able to turn off ECN via the /proc/sys/net/ipv4/tcp_ecn pseudo-file. Most > likely echoing a 0 into it will turn it off. If you cat > /proc/sys/net/ipv4/tcp_ecn, it will probably have a "1" in it right now. > > Mark Post > > -----Original Message----- > From: James Johnson [mailto:[EMAIL PROTECTED] > Sent: Friday, February 21, 2003 3:28 PM > To: [EMAIL PROTECTED] > Subject: Re: Routing question > > > A traceroute to shows the following: > > listsrv:~ # traceroute www.nwmissouri.edu > traceroute to info1.nwmissouri.edu (198.209.246.4), 30 hops max, 40 byte > packets > 1 core4-mfr.cmsu.edu (153.91.24.157) 51 ms 2 ms 1 ms > 2 cmsufire-b.cmsu.edu (153.91.210.251) 1 ms 1 ms 1 ms > 3 morenet-gw.cmsu.edu (153.91.251.254) 2 ms 2 ms 2 ms > 4 kc-r10-01-atm3-0-3-102-aal5.mo.more.net (150.199.51.49) 33 ms 36 ms > 37 ms > 5 nwmsu-atm2-0-101-aal5.gw.more.net (150.199.50.174) 99 ms 42 ms 59 ms > 6 info1.nwmissouri.edu (198.209.246.4) 482 ms !H 157 ms !H 71 ms !H > > The ouput from tcpdump has the following: > listsrv.cmsu.edu.1926 > info1.nwmissouri.edu.http: S [ECN-Echo,CWR] > > What does " S [ECN-Echo,CWR]" mean? > > James Johnson Email: [EMAIL PROTECTED] > Systems Programmer Voice: 660-543-8065 > Central Missouri State University Fax: 660-543-8123 > ----- Original Message ----- > From: "Eddie Chen" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Friday, February 21, 2003 1:20 PM > Subject: Re: Routing question > > > > You can do a traceroute on that IP address or tcpdump. Most > likely > > a filter is set on the router or firewall. > > > > "tcpdump -i ctc0 -w /home/echen/tcpdump.trace" & --- run in > > background > > > > start you ftp /telnet > > > > do "ps" and kill the process(tcpdump) > > > > tcpdump -vvv -r /home/echen/tcpdump.trace > > > /home/echen/trace.listing > > > > You should found ICMP type 03 in the trace and from there it will > > tell you which router > > > > > > > > James Johnson > > <[EMAIL PROTECTED] To: [EMAIL PROTECTED] > > msu.edu> cc: > > Sent by: Linux Subject: Routing question > > on 390 Port > > <[EMAIL PROTECTED] > > arist.edu> > > > > > > 02/21/2003 > > 06:18 PM > > Please respond > > to Linux on 390 > > Port > > > > > > > > > > > > > > We have Linux machine running a listserv that is unable to reach > > a specific ip address. I can not ftp telnet or e-mail to this address > > from Linux. This address is external to our network. I can reach other > > addresses that are external to our network from Linux. > > > > I can, however, reach this address from VM. > > > > Any thoughts as to why this is happening? > > > > We are running z/VM 4.2, SUSE 7.0 and using an OSA Express > > Gigabit card. > > > > James Johnson Email: > [EMAIL PROTECTED] > > Systems Programmer Voice: 660-543-8065 > > Central Missouri State University Fax: 660-543-8123 > > > > > > > > > > > > ----------------------------------------- > > This message and its attachments may contain privileged and confidential > information. If you are not the intended recipient(s), you are prohibited > from > printing, forwarding, saving or copying this email. If you have received > this > e-mail in error, please immediately notify the sender and delete this e-mail > and > its attachments from your computer. > > >
