I am having a simillar problem in PHL with BGP Peering to L3 flapping also.
From L3:
It has been confirmed that IP services are also being impacted. The IP NOC has advised that that the issue is suspected to be the result of a Denial of Service (DoS) attack on several links in the United States. Operations Engineering are being engaged at this time to assist with investigations. Regards, Tim Glen Sr. Network Engineer Advertising Specialty Institute | Promoting SuccessT Email: tglen@asicentral.com <mailto:youraddress@asicentral.com> Phone: (215) 953-3692 Fax: (215) 953-3759 Web: www.asicentral.com <http://www.asicentral.com/> From: Outages [mailto:outages-bounces@outages.org] On Behalf Of shaun coon Sent: Tuesday, February 11, 2014 9:24 PM To: alexzarris@yahoo.com Cc: outages@outages.org Subject: Re: [outages] BGP down and bouncing with L3 AS3356 Flapping in NYC since 8:07 PM EST. On Tue, Feb 11, 2014 at 9:21 PM, <alexzarris@yahoo.com> wrote: Down in Vancouver, BC area as well. We see drops out of Seattle. From: Outages [mailto:outages-bounces@outages.org] On Behalf Of Chris Stone Sent: Tuesday, February 11, 2014 5:46 PM To: outages@outages.org Subject: [outages] BGP down and bouncing with L3 AS3356 Anyone else seeing L3 BGP sessions bouncing. Been up and down here in Denver since 18:01:43 MST. Feb 11 18:01:43 core01 bgpd[1977]: %ADJCHANGE: neighbor 4.28.16.137 Down Peer closed the session Feb 11 18:01:47 core01 bgpd[1977]: %ADJCHANGE: neighbor 4.28.16.137 Up Feb 11 18:04:25 core01 bgpd[1977]: %ADJCHANGE: neighbor 208.69.76.46 Down Peer closed the session Feb 11 18:04:34 core01 bgpd[1977]: %ADJCHANGE: neighbor 208.69.76.46 Up Feb 11 18:08:54 core01 bgpd[1977]: %NOTIFICATION: received from neighbor 4.28.16.137 4/0 (Hold Timer Expired) 0 bytes Feb 11 18:08:54 core01 bgpd[1977]: %ADJCHANGE: neighbor 4.28.16.137 Down BGP Notification received Feb 11 18:11:55 core01 bgpd[1977]: %ADJCHANGE: neighbor 4.28.16.137 Up Feb 11 18:14:55 core01 bgpd[1977]: %NOTIFICATION: sent to neighbor 4.28.16.137 4/0 (Hold Timer Expired) 0 bytes Feb 11 18:14:55 core01 bgpd[1977]: %ADJCHANGE: neighbor 4.28.16.137 Down BGP Notification send Feb 11 18:15:59 core01 bgpd[1977]: %ADJCHANGE: neighbor 4.28.16.137 Up Feb 11 18:19:18 core01 bgpd[1977]: %ADJCHANGE: neighbor 4.28.16.137 Down Peer closed the session Feb 11 18:23:06 core01 bgpd[1977]: %NOTIFICATION: sent to neighbor 4.28.16.137 4/0 (Hold Timer Expired) 0 bytes Feb 11 18:26:59 core01 bgpd[1977]: %NOTIFICATION: sent to neighbor 4.28.16.137 4/0 (Hold Timer Expired) 0 bytes Feb 11 18:27:50 core01 bgpd[1977]: %ADJCHANGE: neighbor 4.28.16.137 Up Feb 11 18:39:56 core01 bgpd[1977]: %NOTIFICATION: received from neighbor 4.28.16.137 4/0 (Hold Timer Expired) 0 bytes Feb 11 18:39:56 core01 bgpd[1977]: %ADJCHANGE: neighbor 4.28.16.137 Down BGP Notification received Feb 11 18:43:27 core01 bgpd[1977]: %NOTIFICATION: received from neighbor 4.28.16.137 4/0 (Hold Timer Expired) 0 bytes Feb 11 18:43:53 core01 bgpd[1977]: %ADJCHANGE: neighbor 4.28.16.137 Up Ticket opened, but not heard anything back yet. Chris -- Let's just say I was testing the bounds of society. I was just curious. -- Jim Morrison _______________________________________________ Outages mailing list Outages@outages.org https://puck.nether.net/mailman/listinfo/outages