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RE: AS announcement question (easy)

  • From: H. Michael Smith, Jr.
  • Date: Mon Aug 04 14:30:57 2003

If the old provider is advertising the prefix based on your
advertisement to them (you're running BGP), then their advertisement
should cease shortly after your link to them goes down.  Likewise, the
new provider would only propagate the advertisement after you advertise
it to them.

Michael

H. Michael Smith, Jr.
Network Services and Security Manager
Clark Atlanta University


-----Original Message-----
From: owner-nanog@merit.edu [mailto:owner-nanog@merit.edu] On Behalf Of
Mike Donahue
Sent: Monday, August 04, 2003 2:22 PM
To: 'nanog@merit.edu'
Subject: AS announcement question (easy)


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?

Thanks in advance,

Mike

Michael Donahue
WATG
(949) 574-8500 x261







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