[60225] in North American Network Operators' Group
Re: AS announcement question (easy)
daemon@ATHENA.MIT.EDU (alex@yuriev.com)
Mon Aug 4 14:42:28 2003
Date: Mon, 4 Aug 2003 14:49:45 -0400 (EDT)
From: alex@yuriev.com
To: Mike Donahue <mdonahue@WATG.com>
Cc: "'nanog@merit.edu'" <nanog@merit.edu>
In-Reply-To: <9DFB6850A6AAD4118A1A00508BDD1D00044CA42E@corpex01.newport.watg>
Errors-To: owner-nanog-outgoing@merit.edu
> Hi, sorry for this low-level question, but at least I'm not posting in html.
> :)
>
> My company owns a class C, and we're switching ISPs. The "new" provider is
> telling us that they can start announcing, without us having to tell the old
> provider to stop announcing. I.e., a 2-3 day period where both are
> announcing our class C.
>
> This conflicts with my extremely (admittedly)limited knowledge. Can someone
> let me know if this is OK/not OK?
If you are going to have your link up to both providers during that time, it
would not be a problem. However, if your /24 is nailed into the tables of
your previous provider, and your link to that provider is down, then the old
provider will create a blackhole for /24 for anyone who prefers the path
presented by your old provider.
In general, one really *should* coordinate switching between providers if
ones' announcement is originated by the provider.
Alex
>
> Thanks in advance,
>
> Mike
>
> Michael Donahue
> WATG
> (949) 574-8500 x261
>
>
