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<p><font face="Arial">I tried this, with 3:6939 which added 3
prepends to he (which I could see at HE's LG) but TPG still
preferred to send traffic via he rather than transit, even
though the path was longer...</font></p>
<p><font face="Arial">ughhh</font><br>
</p>
<br>
<div class="moz-cite-prefix">On 01/12/2018 08:52 AM, Philip
Loenneker wrote:<br>
</div>
<blockquote type="cite"
cite="mid:ME2PR01MB2866FFFA3E35957AFD31046ACF160@ME2PR01MB2866.ausprd01.prod.outlook.com">
<pre wrap="">Note that you can also use BGP communities to adjust how the IX advertises your subnets to individual peers using the documentation here:
<a class="moz-txt-link-freetext" href="https://www.ix.asn.au/peering-technical/">https://www.ix.asn.au/peering-technical/</a>
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 [<a class="moz-txt-link-freetext" href="mailto:ausnog-bounces@lists.ausnog.net">mailto:ausnog-bounces@lists.ausnog.net</a>] On Behalf Of Bill Walker
Sent: Friday, 12 January 2018 8:11 AM
To: John Alexander <a class="moz-txt-link-rfc2396E" href="mailto:johna@wideband.net.au"><johna@wideband.net.au></a>
Cc: <a class="moz-txt-link-abbreviated" href="mailto:ausnog@lists.ausnog.net">ausnog@lists.ausnog.net</a>
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:
</pre>
<blockquote type="cite">
<pre wrap="">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:
</pre>
<blockquote type="cite">
<pre wrap="">I assume it was Hurricane Electric...IPv6 routes are now at 21843 too
Nathan
-----Original Message-----
From: AusNOG [<a class="moz-txt-link-freetext" href="mailto:ausnog-bounces@lists.ausnog.net">mailto:ausnog-bounces@lists.ausnog.net</a>] On Behalf Of
Paul Holmanskikh
Sent: Thursday, 11 January 2018 5:00 PM
To: <a class="moz-txt-link-abbreviated" href="mailto:ausnog@lists.ausnog.net">ausnog@lists.ausnog.net</a>
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
</pre>
</blockquote>
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</pre>
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