Here's the path for a multicast packet to go between CMU to UW:
from Seattle to Sacrameto to LA, to Virginia (ISI-East) to Washington
D.C to Dallas then to lord knows where....
- Stefan
./mtrace 128.2.0.0
./mtrace: WARNING: no multicast group specified, so no statistics
printed
Mtrace from 128.2.0.0 to 128.95.2.137 via group 224.2.0.1
Querying full reverse path... * switching to hop-by-hop:
0 loom05.cs.washington.edu (128.95.2.137)
-1 hoover-V2.cac.washington.edu (128.95.2.100) PIM/Special thresh^ 0
-2 silver-V49.cac.washington.edu (140.142.150.13) PIM/Special
thresh^ 0
-3 * * mcast.cac.washington.edu (140.142.116.1) DVMRP thresh^ 1
-4 * dec3800-1-fddi-0.Sacramento.cw.net (204.70.164.29) DVMRP
thresh^ 64
-5 * dec3800-1-fddi-1.LosAngeles.cw.net (204.70.170.45) DVMRP
thresh^ 1
-6 * * ? (204.140.133.12) DVMRP thresh^ 64
-7 * mb204.isi.edu (204.140.133.8) DVMRP thresh^ 32
-8 slate.isi.edu (128.9.160.33) DVMRP thresh^ 1
-9 * isiepc-isipc.cairn.net (140.173.4.9) DVMRP thresh^ 1
-10 * vbns-cairn.res.vbns.net (204.147.128.1) PIM/Static thresh^ 0
[default]
-11 * ? (204.70.176.23) DVMRP thresh^ 1 [default]
-12 * dec3800-2-fddi-1.Washington.cw.net (204.70.74.77) DVMRP thresh^
1 [default]
-13 * dec3800-1-fddi-0.Dallas.cw.net (204.70.114.29) DVMRP thresh^ 1
[default]
-14 * * MBONE.SESQUI.NET (128.241.254.1) PIM/Special thresh^ 0
[default]
-15 * mae-bone.psi.net (192.41.177.247) DVMRP thresh^ 64 [default]
-16 * * MBONE1.UU.NET (137.39.43.34) DVMRP thresh^ 64 [default]
-17 * * Fddi0.MB1.DCA1.Alter.Net (137.39.33.138) PIM thresh^ 16
[default]
-18 * * * * Fddi0-0.HR2.DCA1.Alter.Net (137.39.33.131) didn't respond
-19 * * *
-20 * * *
-21 * * * ...giving up
Round trip time 1242 ms; total ttl of 78 required.