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- Path: sparky!uunet!dtix!darwin.sura.net!zaphod.mps.ohio-state.edu!rpi!fitzgb
- From: fitzgb@mml0.meche.rpi.edu (Brian Fitzgerald)
- Newsgroups: comp.protocols.nfs
- Subject: can't reach many internet hosts because pcnfs ip time-to-live too small
- Message-ID: <n=3xxcr@rpi.edu>
- Date: 31 Jul 92 14:20:10 GMT
- Organization: Rensselaer Polytechnic Institute, Troy, NY
- Lines: 57
- Nntp-Posting-Host: mml0.meche.rpi.edu
-
- pcnfs 3.0
-
- I used to be able to connect with ftp directly from my pc to
- wuarchive.wustl.edu. Also. I used to be able to mount the archive as a
- virtual drive with pcnfs (a win). Now it seems this will no longer be
- possible, due a change in the internet arrangement.
-
- All my pcnfs software generates ip packets with a time to live of 15,
- but now wuarchive is 17 hops away, so I get ICMP "time exceeded"
- packets back from the 15th gateway, and I never reach wuarchive.
-
- Is the time to live set higher in a later release of pcnfs?
-
- Is it true that there is no way I can adjust the ttl?
-
- Maybe do a binary patch of some driver (pcnfs.sys?).
-
- Brian
-
- traceroute to wuarchive.wustl.edu (128.252.135.4), 30 hops max, 38 byte packets
- 1 jec.gw.its.rpi.edu (128.113.14.254) 0 ms 0 ms 0 ms
- 2 vccfr1.its.rpi.edu (128.113.100.250) 20 ms 0 ms 0 ms
- 3 nyser1-gw.rpi.edu (128.113.1.1) 20 ms 0 ms 0 ms
- 4 rpi.albany.pop.psi.net (38.145.34.1) 20 ms 0 ms 0 ms
- 5 38.145.20.1 (38.145.20.1) 0 ms 0 ms 20 ms
- 6 syr.cornell.site.psi.net (38.145.10.2) 20 ms 20 ms 20 ms
- 7 ENSS.TN.CORNELL.EDU (192.35.82.101) 20 ms 0 ms 20 ms
- 8 t3-1.cnss49.t3.nsf.net (140.222.49.2) 20 ms 20 ms 20 ms
- 9 t3-3.cnss48.t3.nsf.net (140.222.48.4) 20 ms 20 ms 20 ms
- 10 t3-1.cnss72.t3.nsf.net (140.222.72.2) 40 ms 40 ms 60 ms
- 11 t3-2.cnss64.t3.nsf.net (140.222.64.3) 80 ms 80 ms 80 ms
- 12 t3-0.cnss80.t3.nsf.net (140.222.80.1) 80 ms 80 ms 80 ms
- 13 t3-0.cnss81.t3.nsf.net (140.222.81.1) 100 ms 100 ms 100 ms
- 14 t3-0.enss140.t3.nsf.net (140.222.140.1) 120 ms 100 ms 100 ms
- 15 mid-3.hub.mid.net (192.35.171.4) 100 ms 100 ms 100 ms
- 16 Washington-Univ.gw.mid.net (128.242.60.1) 220 ms 120 ms 120 ms
- 17 wuarchive.wustl.edu (128.252.135.4) 100 ms 140 ms 120 ms
-
-
- 0.17 UDP from mml1.meche.rpi.edu.1501 to wuarchive.wustl.edu.sunrpc 64 bytes
- RPC Call portmapper PMAPPROC_GETPORT V2 [2b787594]
- 00 00 0c 01 44 78 02 60 8c 99 62 55 08 00 45 00
- 00 54 00 00 00 00 0f 11 15 13 80 71 0e 15 80 fc
- ^^ --------------------------------- ttl = 15
- 87 04 05 dd 00 6f 00 40 00 00 2b 78 75 94 00 00
- 00 00 00 00 00 02 00 01 86 a0 00 00 00 02 00 00
- 00 03 00 00 00 00 00 00 00 00 00 00 00 00 00 00
- 00 00 00 01 86 a5 00 00 00 01 00 00 00 11 00 00
- 00 00 e6 d7 00 00 05 f2 00 00
-
- 0.27 ICMP from mid-3.hub.mid.net to mml1.meche.rpi.edu time exceeded
- bad packet: UDP from mml1.meche.rpi.edu.1501 to wuarchive.wustl.edu.sunrpc 64 bytes
- 02 60 8c 99 62 55 00 00 0c 01 44 78 08 00 45 00
- 00 38 00 00 00 00 f1 01 d0 16 c0 23 ab 04 80 71
- 0e 15 0b 00 ef 73 00 00 00 00 45 00 00 54 00 00
- 00 00 00 11 23 13 80 71 0e 15 80 fc 87 04 05 dd
- 00 6f 00 40 00 00 ad 61 00 00 00 b2 00 00
-