North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical cold-potato at L3/Chi into UU?
In Chicago, L3 appears to be routing some traffic to UU directly, but for some other UU destinations, L3 is handing-off to UU via New York: trace from L3/Chi to 209.98.0.2 (AS8015 via 701) is carried to UU via New York (edited): 1 ae-1-53.bbr1.Chicago1.Level3.net (4.68.101.65) 8 msec Oddly, a L3/Chi trace to the last hop above within AS701 (157.130.98.2) enters UU immediately in Chicago, taking the shorter path to Minneapolis: 1 ge-7-0-0-56.edge1.Chicago1.Level3.net (4.68.101.173) 0 msec UU support has verified that AS8015 prefixes are advertised at UU's L3/Chi peering point; and L3 support reports this is "routing as designed". I would guess that UU requires its peers to use hot-potato routing, so I'm at a loss as to what kind of traffic engineering is being used. -- Bradley Urberg-Carlson VISI Network Operations; pgp keys avaialble at http://www.keyserver.net/ |