new 6bone backbone links diagram - version 21

[Matt Crawford]

> 2.  SURFNET cutting back extra links in the backbone mesh is a trend we
> should all follow to minimize links we don't need in a backbone.  The
> purpose is NOT to fully conenct the backbone, rather to provide the links
> that are appropriate (don't ask me to define that one :-).

Is it too many links, or inappropriate default routes that makes the
path from Fermilab to NIST go through France?  (Or is it just bad DNS
info?  The embeded IPv4 prefix checks out.)

I point default at ESNET, who defaults to Cisco.  Cisco is routing
these packets to DEC, so DEC is either defaulting to IMAG or
selecting that route for some other reason.

The return path is more hops, but it stays on this continent:
NIST -> NRL -> CICNET -> CISCO -> ESNET -> FNAL.

Tracing the route to ipng9.ipng.nist.gov (5F00:3100:8106:3300:0:C0:3302:5A)
1 5F01:2500::293:3152:1 56 msec *  56 msec
2 6bone-router-tun-esnet.cisco.inner.net (5F00:6D00:0:E:2::1) 84 msec *  88 msec
3  * 5F00:2100:CC7B:0:2:0:F842:1428 132 msec 132 msec
4  * 6bone-core.ipv6.imag.fr (5F06:B500:8158:1A00:0:800:2BB9:F33D) 300 msec 284 msec
5 luna-v6.ipv6.imag.fr (5F06:B500:8158:1A00:0:800:2075:24EA) 292 msec 320 msec 300 msec
6  * ipng9.ipng.nist.gov (5F00:3100:8106:3300:0:C0:3302:5A) 296 msec * 


Traceroute to 5f01:2500:83e1:0:5:40:b40:7cef:
1       ipng10.ipng.nist.gov  (5f00:3100:8106:3300::f840:cde8)    2.991 ms  2.252 ms  2.196 ms
2       ipng9.ipng.nist.gov  (::129.6.51.154)    3.458 ms *  3.404 ms
3       buzzcut.ipv6.nrl.navy.mil  (5f00:3000:84fa:5a00::5)    14.900 ms  17.267 ms  15.834 ms
4       guar.ipv6.nrl.navy.mil  (5f00:3000:84fa:5a00::3)    17.311 ms *  34.473 ms
5       6bone.chicago.cic.net  (5f04:c900:8367:100:1:0:c8e:50c2)    239.570 ms  174.739 ms  232.363 ms
6       esnet-tun-endpoint.cisco.inner.net  (5f00:6d00:0:e:2::2)    230.087 ms * *
7       5f01:2500::293:3152:2  (5f01:2500::293:3152:2)    307.000 ms
8       5f01:2500:83e1:0:ffff:800:2021:261e  (5f01:2500:83e1:0:ffff:800:2021:261e)    316.757 ms *