[mpls-linux-general] FWD: Re: MPLS ICMP Extensions , From nanog
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[mpls-linux-general] FWD: Re: MPLS ICMP Extensions , From nanog
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From: Mr. J. W. L. <ba...@ba...> - 2003-08-17 22:34:08
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Hello James & All , Jesper Skriver <je...@sk...> sent the below email to the nanog list with a URL: to a patch against LBL.gov's version of traceroute . Hth , JimL ---------- Forwarded message ---------- Date: Mon, 18 Aug 2003 00:26:34 +0200 From: Jesper Skriver <je...@sk...> To: na...@me... Subject: Re: MPLS ICMP Extensions On Thu, Aug 14, 2003 at 01:40:01PM -0400, Leo Bicknell wrote: > > I wanted to get some other opinions on some new features that have > appeared in recent code from the popular vendors. It appears there > is a new draft, a copy of which can be found at > http://www.watersprings.org/links/mlr/id/draft-ietf-mpls-icmp-01.txt that > allows MPLS enabled boxes to return some additonal information in > a traceroute packet. > > That's all well and good, and I can see how that might be amazingly > useful to someone running an MPLS network, however, it seems to > expose data much further than the local network. Here's a random > example from a traceroute I recently performed (on a Juniper): > > traceroute wcg.net > [snip] > 11 hrndva1wcx3-oc48.wcg.net (64.200.95.117) 91.935 ms 102.652 ms 92.960 ms > MPLS Label=13198 CoS=0 TTL=1 S=1 > 12 hrndva1wcx2-oc48.wcg.net (64.200.95.77) 92.593 ms 92.785 ms 93.119 ms > MPLS Label=12676 CoS=0 TTL=1 S=1 > 13 nycmny2wcx2-oc48.wcg.net (64.200.240.45) 93.273 ms 93.121 ms 93.067 ms > MPLS Label=12632 CoS=0 TTL=1 S=1 > 14 nycmny2wcx3-oc48.wcg.net (64.200.87.78) 104.755 ms 91.949 ms 92.169 ms > MPLS Label=12672 CoS=0 TTL=1 S=1 > 15 chcgil1wcx3-oc48.wcg.net (64.200.240.37) 92.021 ms 91.737 ms 91.684 ms > MPLS Label=12592 CoS=0 TTL=1 S=1 > 16 chcgil1wcx3-pos5-0.wcg.net (64.200.210.114) 175.907 ms 278.144 ms 203.763 ms > MPLS Label=12695 CoS=0 TTL=1 S=1 > 17 chcgil1wcx2-oc48.wcg.net (64.200.103.73) 93.286 ms 93.230 ms 93.593 ms > MPLS Label=13506 CoS=0 TTL=1 S=1 > 18 stlsmo3wcf1-atm.wcg.net (64.200.210.158) 92.780 ms 92.344 ms 92.596 ms If anyone is interested I have a patch for LBL traceroute to display this information too. Download ftp://ftp.ee.lbl.gov/traceroute.tar.gz, patch in http://e.wheel.dk/~jesper/traceroute.diff, and you will have jesper@tam:/home/jesper> traceroute wcg.net traceroute to wcg.net (64.200.241.26), 30 hops max, 40 byte packets 1 217.79.98.25.adsl.griffin.net.uk (217.79.98.25) 0.895 ms 0.836 ms 0.751 ms 2 217.79.96.209 (217.79.96.209) 21.557 ms 18.431 ms 19.075 ms 3 f0-0.core1.tchx.lon.uk.griffin.com (217.79.96.1) 19.768 ms 19.094 ms 19.285 ms 4 lndnuk1icx1.wcg.net (195.66.224.105) 18.824 ms 20.206 ms 19.800 ms 5 nycmny2wcx2-pos15-3.wcg.net (64.200.87.61) 126.360 ms 127.665 ms 127.702 ms MPLS Label=12632 CoS=0 TTL=1 S=1 6 nycmny2wcx3-oc48.wcg.net (64.200.87.74) 125.205 ms 126.923 ms 125.993 ms MPLS Label=12672 CoS=0 TTL=1 S=1 7 chcgil1wcx3-oc48.wcg.net (64.200.240.37) 126.425 ms 126.212 ms 126.220 ms MPLS Label=12592 CoS=0 TTL=1 S=1 8 brvwil1wcxa-pos9-0.wcg.net (64.200.103.193) 126.920 ms 127.660 ms 127.462 ms MPLS Label=12604 CoS=0 TTL=1 S=1 9 64.200.236.14 (64.200.236.14) 129.886 ms 125.499 ms 126.715 ms MPLS Label=13506 CoS=0 TTL=1 S=1 10 stlsmo3wcf1-atm.wcg.net (64.200.210.158) 126.080 ms 124.598 ms 125.235 ms 11 stl-clust01.wcg.net (64.200.241.26) 126.723 ms 124.544 ms 124.736 ms /Jesper -- Jesper Skriver, jesper(at)skriver(dot)dk - CCIE #5456 One Unix to rule them all, One Resolver to find them, One IP to bring them all and in the zone to bind them. -- +------------------------------------------------------------------+ | James W. Laferriere | System Techniques | Give me VMS | | Network Engineer | P.O. Box 854 | Give me Linux | | ba...@ba... | Coudersport PA 16915 | only on AXP | +------------------------------------------------------------------+ |
