Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!tut.cis.ohio-state.edu!zaphod.mps.ohio-state.edu!uakari.primate.wisc.edu!aplcen!trn From: trn@aplcen.apl.jhu.edu (Tony Nardo) Newsgroups: comp.protocols.tcp-ip Subject: *.jhuapl.edu -- serious gateway thrashing Keywords: gateway routes Message-ID: <4790@aplcen.apl.jhu.edu> Date: 26 Feb 90 18:40:15 GMT Distribution: usa Organization: Johns Hopkins University, Laurel, MD Lines: 30 For the past few weeks, links between the *.jhuapl.edu nodes and the non-MILNET community have been somewhat unstable. Today, however, is the first time that I've seen an extreme case of gateway thrashing: warper.110% traceroute uunet.uu.net traceroute to uunet.uu.net (192.48.96.2), 30 hops max, 40 byte packets 1 apl-b3-gw (128.244.3.1) 0 ms 10 ms 0 ms 2 apl-gw (128.244.1.1) 0 ms 10 ms 0 ms 3 RESTON-DCEC-MB.DDN.MIL (26.21.0.104) 290 ms MARINA-DEL-REY-MB.DDN.MIL (26.6.0.103) 320 ms 330 ms 4 MARINA-DEL-REY-MB.DDN.MIL (26.6.0.103) 690 ms CAMBRIDGE-MB.DDN.MIL (10.3.0.5) 430 ms 430 ms 5 CAMBRIDGE-MB.DDN.MIL (10.3.0.5) 740 ms * MARINA-DEL-REY-MB.DDN.MIL (26.6.0.103) 1340 ms 6 MARINA-DEL-REY-MB.DDN.MIL (26.6.0.103) 1210 ms CAMBRIDGE-MB.DDN.MIL (10.3.0.5) 2060 ms 2080 ms 7 CAMBRIDGE-MB.DDN.MIL (10.3.0.5) 990 ms MARINA-DEL-REY-MB.DDN.MIL (26.6.0.103) 1290 ms 1710 ms 8 * CAMBRIDGE-MB.DDN.MIL (10.3.0.5) 1640 ms * 9 * MARINA-DEL-REY-MB.DDN.MIL (26.6.0.103) 3010 ms 2490 ms 10 MARINA-DEL-REY-MB.DDN.MIL (26.6.0.103) 2240 ms * * 11 CAMBRIDGE-MB.DDN.MIL (10.3.0.5) 2220 ms * * 12 * CAMBRIDGE-MB.DDN.MIL (10.3.0.5) 3920 ms * 13 * * * 14 * * * 15 * * * etc. Does anyone have any insights as to how this thrashing starts? How it may be stopped? -- Tony Nardo, INET: trn@warper.jhuapl.edu, trn@aplcen.apl.jhu.edu Johns Hopkins Univ./APL UUCP: {backbone!}mimsy!aplcen!trn Quote(s) relocated to my finger .plans