I'm not from GLBX, but I we do peer with them so I get the maint notices. They are have been doing a lot of router upgrades in SunnyVale for the past week. I seek from the trace you sent in that the failures are occuring there. -----Original Message----- From: Mohamed Hirse [mailto:madlion@justin.net] Sent: Tuesday, June 27, 2000 2:03 PM To: nanog@merit.edu Subject: Global Crossing Network Problem. Can someone from Global crossing help explain this problem. There seems to be some sort of internal network problem. Traceroutes attached. This affecting many of GBLX customers. Thanks Mohamed route-server.cerf.net>traceroute www.juniper.net Type escape sequence to abort. Tracing the route to www.juniper.net (207.17.137.30) 1 fe8-0-0.san-bb1.cerf.net (134.24.38.225) [AS 1740] 4 msec 0 msec 0 msec 2 fe0-0-0.san-bb2.cerf.net (134.24.29.102) [AS 1740] 0 msec 4 msec 0 msec 3 so2-1-2-155M.san-bb4.cerf.net (134.24.29.181) [AS 1740] 0 msec 4 msec 0 msec 4 pos3-0-622M.lax-bb5.cerf.net (134.24.29.14) [AS 1740] 4 msec 8 msec 4 msec 5 pos5-0-622M.lax-bb4.cerf.net (134.24.33.169) [AS 1740] 4 msec 8 msec 4 msec 6 pos6-0-622M.sfo-bb3.cerf.net (134.24.29.233) [AS 1740] 72 msec 76 msec 72 msec 7 pos5-0-0-155M.sjc-bb2.cerf.net (134.24.29.22) [AS 1740] 76 msec pos0-0-155M.sjc-bb2.cerf.net (134.24.32.90) [AS 1740] 72 msec pos5-0-0-155M.sjc-bb2.cerf.net (134.24.29.22) [AS 1740] 72 msec 8 * * * 9 pos4-0-2488M.cr1.SNV3.gblx.net (208.50.169.74) [AS 3549] !H !H !H route-server.cerf.net>traceroute www.juniper.net Type escape sequence to abort. Tracing the route to www.juniper.net (207.17.137.30) 1 fe8-0-0.san-bb1.cerf.net (134.24.38.225) [AS 1740] 0 msec 0 msec 0 msec 2 fe0-0-0.san-bb2.cerf.net (134.24.29.102) [AS 1740] 0 msec 0 msec 4 msec 3 so2-1-2-155M.san-bb4.cerf.net (134.24.29.181) [AS 1740] 0 msec 0 msec 0 msec 4 pos3-0-622M.lax-bb5.cerf.net (134.24.29.14) [AS 1740] 4 msec 8 msec 4 msec 5 pos5-0-622M.lax-bb4.cerf.net (134.24.33.169) [AS 1740] 8 msec 4 msec 8 msec 6 pos6-0-622M.sfo-bb3.cerf.net (134.24.29.233) [AS 1740] 72 msec 72 msec 72 msec 7 pos5-0-0-155M.sjc-bb2.cerf.net (134.24.29.22) [AS 1740] 76 msec pos0-0-155M.sjc-bb2.cerf.net (134.24.32.90) [AS 1740] 76 msec 72 msec 8 * * * 9 pos4-0-2488M.cr1.SNV3.gblx.net (208.50.169.74) [AS 3549] !H !H !H route-server.cerf.net>