<div dir="ltr">Won't that only work for traffic going from John's AS to TPG?<div><br></div><div>His example was from TPG to their AS - If they were to implement a prefix list filtering on ASN, then they would preference another domestic route (presumably transit) but TPG would still preference HE, which would make for some lovely asynchronous routing.</div><div><br></div><div>You could potentially try to influence their routing policies using their published communities (<a href="https://bgp.he.net/irr/as-set/AS-COMMUNITIES" target="_blank">https://bgp.he.net/irr/as-<wbr>set/AS-COMMUNITIES</a>) or prepending.</div><div><br></div><div>Regards,</div><div>Jake</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Jan 12, 2018 at 8:11 AM, Bill Walker <span dir="ltr"><<a href="mailto:bill@wjw.nz" target="_blank">bill@wjw.nz</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Filter based on the AS Path?<br>
<br>
If the path is:<br>
<br>
You <- 58941 <- 6427 <- 7545<br>
<br>
You <- MegaIXSyd <- HE <- TPG<br>
<br>
In the Cisco world, I would use<br>
<br>
ip as-path access-list 10 deny ^58941_6427_7545$<br>
<br>
(The ASN's here may not be exactly what is in use, you will need to check your received prefixes)<div><div class="h5"><br>
<br>
On 2018-01-12 09:46, John Alexander wrote:<br>
</div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="h5">
With this, does anyone know of a way of keeping HE routes, but<br>
excluding a specific one, namely TPG 7545 which is a direct customer<br>
of HE. Traffic from them goes from Syd -> LA -> Syd -> he peering -><br>
me. I'd prefer to just make them stay at home so to speak instead of<br>
going around the world. We don't peer at Pipe which would be the only<br>
other place to connect to tpg.<br>
<br>
John<br>
<br>
On 01/11/2018 05:55 PM, Nathan Le Nevez wrote:<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
I assume it was Hurricane Electric...IPv6 routes are now at 21843<br>
too<br>
<br>
Nathan<br>
<br>
-----Original Message-----<br>
From: AusNOG [mailto:<a href="mailto:ausnog-bounces@lists.ausnog.net" target="_blank">ausnog-bounces@lists.a<wbr>usnog.net</a>] On Behalf Of<br>
Paul Holmanskikh<br>
Sent: Thursday, 11 January 2018 5:00 PM<br>
To: <a href="mailto:ausnog@lists.ausnog.net" target="_blank">ausnog@lists.ausnog.net</a><br>
Subject: [AusNOG] Megaport IX Sydney - Sudden grows in number of<br>
prefixes<br>
<br>
G'day,<br>
<br>
Number of prefixes we are receiving from Megaport IX in Sydeney<br>
suddenly jumped to 40493.<br>
At lest 100% grow. Any ideas what happened.<br>
<br>
as_path count<br>
36351 945<br>
4739 909<br>
9443 658<br>
</blockquote></div></div>
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