The past few days, I've been noticing packet loss, apparently at the points where Sprint and C&W exchange traffic. Today, I emailed a note about this including the output from a few mtr's in each direction to noc@sprint.net, and though I got no reply, an hour or so later, I noticed packets were taking a slightly different route (apparently going through a different peering connection in a different city if you believe the hostnames) and the packet loss was gone and round trip times much better. I left the office for a bit, and now that I'm back, I see the packets are back to using the old peering connection that I can only assume must be overloaded. Anyone know what the deal is? Matt's traceroute [v0.42] orldfl-ns-1.atlantic.net Fri Jan 19 18:58:51 2001 Keys: D - Display mode R - Restart statistics Q - Quit Packets Pings Hostname %Loss Rcv Snt Last Best Avg Worst 1. orldflwcom-br-1-fe0-0.atlantic.net 0% 30 30 0 0 0 1 2. sl-gw8-orl-3-0-TS11.sprintlink.net 0% 30 30 1 0 1 1 3. sl-bb11-orl-5-2.sprintlink.net 0% 30 30 1 1 1 2 4. sl-bb21-atl-9-1.sprintlink.net 0% 30 30 11 11 11 12 5. sl-bb2-atl-0-0-0.sprintlink.net 0% 30 30 12 11 30 190 6. core3-serial2-0-0.Atlanta.cw.net 20% 24 30 37 33 37 41 7. corerouter1.Atlanta.cw.net 27% 22 30 34 33 36 50 8. acr1-loopback.Atlantaald.cw.net 20% 24 30 36 32 37 39 9. bar7-loopback.Atlantaald.cw.net 27% 22 30 48 33 37 48 10. ??? Hop 10 is a router with some packet filtering...no response is expected there. -- ---------------------------------------------------------------------- Jon Lewis *jlewis@lewis.org*| I route System Administrator | therefore you are Atlantic Net | _________ http://www.lewis.org/~jlewis/pgp for PGP public key_________
Sprint seems to be having capacity issues, I've noticed L3/Sprint SanJose goes thru some serious degradation during most of the day.. Supposedly the issue has been open in both NOC's for 2-3 months...they're "working on it".. Have you tried contacting C&W about it? Sprint wasn't incredibly helpful, but L3 provided some information for us.. Regards, Matt -- Matt Levine, CTO <mlevine@efront.com> eFront Media, Inc. - http://www.efront.com Phone: +1 714 428 8500 ext. 504 Fax : +1 949 203 2156 ICQ : 17080004 -----Original Message----- From: owner-nanog@merit.edu [mailto:owner-nanog@merit.edu]On Behalf Of jlewis@lewis.org Sent: Friday, January 19, 2001 4:04 PM To: nanog@merit.edu Subject: Sprint / C&W peering issues? The past few days, I've been noticing packet loss, apparently at the points where Sprint and C&W exchange traffic. Today, I emailed a note about this including the output from a few mtr's in each direction to noc@sprint.net, and though I got no reply, an hour or so later, I noticed packets were taking a slightly different route (apparently going through a different peering connection in a different city if you believe the hostnames) and the packet loss was gone and round trip times much better. I left the office for a bit, and now that I'm back, I see the packets are back to using the old peering connection that I can only assume must be overloaded. Anyone know what the deal is? Matt's traceroute [v0.42] orldfl-ns-1.atlantic.net Fri Jan 19 18:58:51 2001 Keys: D - Display mode R - Restart statistics Q - Quit Packets Pings Hostname %Loss Rcv Snt Last Best Avg Worst 1. orldflwcom-br-1-fe0-0.atlantic.net 0% 30 30 0 0 0 1 2. sl-gw8-orl-3-0-TS11.sprintlink.net 0% 30 30 1 0 1 1 3. sl-bb11-orl-5-2.sprintlink.net 0% 30 30 1 1 1 2 4. sl-bb21-atl-9-1.sprintlink.net 0% 30 30 11 11 11 12 5. sl-bb2-atl-0-0-0.sprintlink.net 0% 30 30 12 11 30 190 6. core3-serial2-0-0.Atlanta.cw.net 20% 24 30 37 33 37 41 7. corerouter1.Atlanta.cw.net 27% 22 30 34 33 36 50 8. acr1-loopback.Atlantaald.cw.net 20% 24 30 36 32 37 39 9. bar7-loopback.Atlantaald.cw.net 27% 22 30 48 33 37 48 10. ??? Hop 10 is a router with some packet filtering...no response is expected there. -- ---------------------------------------------------------------------- Jon Lewis *jlewis@lewis.org*| I route System Administrator | therefore you are Atlantic Net | _________ http://www.lewis.org/~jlewis/pgp for PGP public key_________
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Matt Levine