[AusNOG] Megaport IX Sydney - Sudden grows in number of prefixes

[Jacob Taylor]

Whoops, indeed that is the case.

It was one of the first results on Google that I found, didn't look close
enough.
Haven't had my coffee yet. :)

On Fri, Jan 12, 2018 at 8:53 AM, Jacob Taylor <jake at taylornetworks.com.au>
wrote:

> Won't that only work for traffic going from John's AS to TPG?
>
> 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.
>
> You could potentially try to influence their routing policies using their
> published communities (https://bgp.he.net/irr/as-set/AS-COMMUNITIES) or
> prepending.
>
> Regards,
> Jake
>
> On Fri, Jan 12, 2018 at 8:11 AM, Bill Walker <bill at wjw.nz> wrote:
>
>> 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-bounces at lists.ausnog.net] On Behalf Of
>>>> Paul Holmanskikh
>>>> Sent: Thursday, 11 January 2018 5:00 PM
>>>> To: ausnog at 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
>>>>
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