[isp-bgp] Re: BGP advantages

[Jon Lewis <jlewis@...>]

On Mon, 6 Sep 2004, Dean Anderson wrote:

> You need to have portable address space before BGP is going to useful.

That's not entirely true.  Multihoming to 2 or more providers using
BGP to announce PA address space from one of your providers to all of your
providers works just fine generally.  The main disadvantage is you're
still tied to that provider for the IPs and will have to renumber if you
want to dump that provider.

If you only plan to get one internet connection (T1?), then I agree you
probably are better off going with a local "regional provider" who's
multihomed than with a tier 1 transit-free provider.  As was demonstrated
several years ago by C&W depeering PSI, getting transit from provider that
entirely relies on peering and buys no transit means if they depeer (or
get depeered by) another tier 1, you no longer have full internet
connectivity.

----------------------------------------------------------------------
 Jon Lewis                   |  I route
 Senior Network Engineer     |  therefore you are
 Atlantic Net                |
_________ http://www.lewis.org/~jlewis/pgp for PGP public key_________







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