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To be clear I'm not saying this was HE's problem. I'm not sure it wasn't an issue with the route server, itself. I just wanted to give people a heads up that we had an issue. -- =============================================== David Farmer Email:[log in to unmask] Networking & Telecommunication Services Office of Information Technology University of Minnesota 2218 University Ave SE Phone: 612-626-0815 Minneapolis, MN 55414-3029 Cell: 612-812-9952 =============================================== On Apr 3, 2013, at 9:01, Reid Fishler <[log in to unmask]> wrote: > If anyone is seeing problems, PLEASE email [log in to unmask] > > Reid > > > On Wed, Apr 3, 2013 at 9:01 AM, Doug McIntyre <[log in to unmask]> wrote: >> On Wed, Apr 03, 2013 at 06:45:15AM -0500, David Farmer wrote: >> > This morning at approximately 1:30 our peering session with HE >> > reset, I assume for some kind of normal maintenance on their end. >> > >> > This triggered a weird issue on our end. Because of some crufty >> > route policy we were preferring the routes we learned from the MICE >> > route server over the routes we learned directly from HE. And for >> > some reason the routes we were learning from the route server had a >> > different link-local address associated with them than the routes we >> > learned directly. And this address no longer seems to be valid, and >> > this caused traffic to be black holed. >> > >> > From below >> > FE80::224:38FF:FEA7:EA03 - address on routes learned from MICE RS >> > FE80::224:38FF:FEA7:EA36 - address on routes direct from HE >> >> >> FIWW: We do buy transit from HE and did get the maintenance notice for >> this morning. >> >> I've also seen this behavior from them before. I'm not sure if the link >> local address changes on their end due to some change or what is going >> on. It doesn't matter on our direct connect router, where we only >> talk the public IPv6 address, but the MICE connection seems to have >> stale link-local IPv6 addresses from time to time that I've had to >> clear out due to some change. >> >> -- >> Doug McIntyre <[log in to unmask]> >> -- ipHouse/Goldengate/Bitstream/ProNS -- >> Network Engineer/Provisioning/Jack of all Trades >> >> ######################################################################## >> >> To unsubscribe from the MICE-DISCUSS list, click the following link: >> http://lists.iphouse.net/cgi-bin/wa?SUBED1=MICE-DISCUSS&A=1 > > > > -- > Reid Fishler > Director > Hurricane Electric > +1-510-580-4178 > > To unsubscribe from the MICE-DISCUSS list, click the following link: > http://lists.iphouse.net/cgi-bin/wa?SUBED1=MICE-DISCUSS&A=1 ######################################################################## To unsubscribe from the MICE-DISCUSS list, click the following link: http://lists.iphouse.net/cgi-bin/wa?SUBED1=MICE-DISCUSS&A=1