(Source1): Mbone router data (collected from IGMP messages by mrinfo
tool by Bill Fenner) for June 1996. Consists of some of MCI and all of
(Source2): Cambridge map file from June 1996. Data generated by
mwatch mbone monitoring program (Piet Brooks, University of Cambridge),
but monitoring has since
ceased due to a change in UKERNA's billing policy.
(Source3): generated database name2place
(Source4): generated database place2latlong
NDP format file containing one line for each edge or node.
High resolution globe model in VRML file format (.wrl). (from
Stuart Levy of the Geometry Center using the CIA World Map database)
Hostnames from IGMP messages are mapped to latitude and longitude.
(Filter1): May remove nonbackbone tunnels (originally drawn as thin
(Filter2): May remove any of three groups of tunnels where 1) both endpoints are in same major ISP, 2) one endpoint is in major ISP, or 3) neither
endpoint is in a major ISP.