[AusNOG] As path prepend TPG and Vocus

[Walker, Bill (Christchurch)]

Hi Steve,

It would be best to contact each directly so they understand what your doing, however Vocus Communities are listed here:

https://support.vocus.com.au/s/article/What-BGP-Communities-does-Vocus-support

Thanks,

Bill

Bill Walker | Manager, Regional Networks | Stantec | Mobile: +64 21 241 7206

-----Original Message-----
From: AusNOG <ausnog-bounces at lists.ausnog.net> On Behalf Of Steven Waite
Sent: Monday, 1 May 2023 8:39 pm
To: ausnog <ausnog at lists.ausnog.net>
Subject: [AusNOG] As path prepend TPG and Vocus

Good evening

I hope everyone is well. We have a /23 block broken up between TPG /24 and Vocus /24 with the /23 advertise to both Vocus and TPG for failover. This worked will until recently as we noticed increasing failover times during maintenance and now takes around 10-15 minutes. Today I decided to try AS path prepending away from smallest prefix wins type of approach. I think Vocus and TPG ignores prepending as these are local routes thus the local route is preferred even with a lot of prepends. I would love to achieve the same thing via communities if it's possible. Is someone able to share communities numbers that I should be using for Vocus/TPG please to advertise the primary route for a prefix?

Many thanks Steve
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