RE: AS path question.

["Rettke, Brian" <Brian.Rettke () cableone biz>]

If it's not a private AS, and it is the one that I own, who cares? AS-Path is the best mandatory value that is 
completely within my control to manipulate, which explains its proliferation in the network. I'd rather do it myself 
than have to rely on someone else.

That being said, I've found that more vendors are manipulating local preference values themselves, but offer local 
preference and other attributes to be set upstream. Which now has shifted the de-facto standards of MED and AS-PATH to 
the back burner.

Sincerely,

Brian A . Rettke
RHCT, CCDP, CCNP, CCIP
Network Engineer, CableONE Internet Services


-----Original Message-----
From: Scott Weeks [mailto:surfer () mauigateway com]
Sent: Wednesday, November 10, 2010 6:26 PM
To: nanog () nanog org
Subject: Re: AS path question.



--- jbates () brightok net wrote:
From: Jack Bates <jbates () brightok net>

On 11/10/2010 5:44 PM, Scott Weeks wrote:
> Do you think (or is there evidence) that very many ASs use maxas-limit type commands?  I have never used it and never 
> had any problems...

: ...but just to be safe I added it to all my routers. I
: don't know where I came up with the magical 75 number,
: but it definitely seems reasonable that anything with
: 75+ ASNs in the path probably don't deserve to be in
: my table.
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Why did that make you feel safe?  Other than a bug, and ignorance of BGP, what is unsafe about a lotta prepends?

scott