[AusNOG] OT: AS_PATH prepend (was: Re: Largest IP Backbone)

[McDonald Richards]

When the average AS-Path length to reach any destination on the Internet is
only 4.68, the only reason for that many pre-pends is total lack of clue.

Macca


-----Original Message-----
From: ausnog-bounces at lists.ausnog.net
[mailto:ausnog-bounces at lists.ausnog.net] On Behalf Of Sean K. Finn
Sent: Friday, 1 May 2009 4:03 PM
To: 'ausnog at ausnog.net'
Subject: Re: [AusNOG] OT: AS_PATH prepend (was: Re: Largest IP Backbone)

Or perhaps they are advertising from some different points in the globe, for
let's say, redundant DNS, for example, and balance everything everywhere
worldwide using prepends.

MIGHT work.

-S

-----Original Message-----
From: ausnog-bounces at lists.ausnog.net
[mailto:ausnog-bounces at lists.ausnog.net] On Behalf Of McDonald Richards
Sent: Friday, 1 May 2009 3:42 PM
To: ausnog at ausnog.net
Subject: Re: [AusNOG] OT: AS_PATH prepend (was: Re: Largest IP Backbone)

There are many people out there (even inside AU) who fail at understanding
that LPREF beats pre-pending, every time. Unfortunately they still think
that with 500 bazillion pre-pends they will never see traffic on their
metered backup link.....

Macca


-----Original Message-----
From: ausnog-bounces at lists.ausnog.net
[mailto:ausnog-bounces at lists.ausnog.net] On Behalf Of Dale Shaw
Sent: Friday, 1 May 2009 3:39 PM
To: ausnog at ausnog.net
Subject: [AusNOG] OT: AS_PATH prepend (was: Re: Largest IP Backbone)

Hi,

On Fri, May 1, 2009 at 2:05 PM, Bill Walker
<Bill.Walker at staff.snap.net.nz> wrote:
>
> http://www.cymru.com/BGP/summary.html

Wow, these guys (and many more like them) reeeaallly like AS_PATH
prepending.

203.124.25.0/24 [peer013] 22335 11537 3549 8966 8966 8961 38193 38264
45127 45127 45127 45127 45127 45127 45127 45127 45127 45127 45127
45127 45127 45127 45127 45127 45127 45127 45127 45127 45127 45127
45127 45127 45127 45127 45127 i

inetnum:      203.124.24.0 - 203.124.31.255
netname:      WARIDTELECOM
descr:        WARID Telecom is a GSM service provider in Pakistan.
country:      PK

WHY? (surely they haven't done this to tip the balance somewhere many
AS hops away?)

cheers,
Dale
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