Note that you can also use BGP communities to adjust how the IX advertises your subnets to individual peers using the documentation here: https://www.ix.asn.au/peering-technical/ Unfortunately you can't set a community of 0:7545 to avoid advertising your routes to TPG, as they aren't the direct peer - you would need to block advertising to HE using 0:6427. It may be sufficient for you to prepend the routes being advertised to HE, using 3:6427, to reduce the amount of traffic taking that path, but still keeping it available.
-----Original Message----- From: AusNOG [mailto:ausnog-boun...@lists.ausnog.net] On Behalf Of Bill Walker Sent: Friday, 12 January 2018 8:11 AM To: John Alexander <jo...@wideband.net.au> Cc: ausnog@lists.ausnog.net Subject: Re: [AusNOG] Megaport IX Sydney - Sudden grows in number of prefixes Filter based on the AS Path? If the path is: You <- 58941 <- 6427 <- 7545 You <- MegaIXSyd <- HE <- TPG In the Cisco world, I would use ip as-path access-list 10 deny ^58941_6427_7545$ (The ASN's here may not be exactly what is in use, you will need to check your received prefixes) On 2018-01-12 09:46, John Alexander wrote: > With this, does anyone know of a way of keeping HE routes, but > excluding a specific one, namely TPG 7545 which is a direct customer > of HE. Traffic from them goes from Syd -> LA -> Syd -> he peering -> > me. I'd prefer to just make them stay at home so to speak instead of > going around the world. We don't peer at Pipe which would be the only > other place to connect to tpg. > > John > > On 01/11/2018 05:55 PM, Nathan Le Nevez wrote: > >> I assume it was Hurricane Electric...IPv6 routes are now at 21843 too >> >> Nathan >> >> -----Original Message----- >> From: AusNOG [mailto:ausnog-boun...@lists.ausnog.net] On Behalf Of >> Paul Holmanskikh >> Sent: Thursday, 11 January 2018 5:00 PM >> To: ausnog@lists.ausnog.net >> Subject: [AusNOG] Megaport IX Sydney - Sudden grows in number of >> prefixes >> >> G'day, >> >> Number of prefixes we are receiving from Megaport IX in Sydeney >> suddenly jumped to 40493. >> At lest 100% grow. Any ideas what happened. >> >> as_path count >> 36351 945 >> 4739 909 >> 9443 658 > _______________________________________________ > AusNOG mailing list > AusNOG@lists.ausnog.net > http://lists.ausnog.net/mailman/listinfo/ausnog _______________________________________________ AusNOG mailing list AusNOG@lists.ausnog.net http://lists.ausnog.net/mailman/listinfo/ausnog _______________________________________________ AusNOG mailing list AusNOG@lists.ausnog.net http://lists.ausnog.net/mailman/listinfo/ausnog