Great Circle Associates Firewalls
(July 1997)
 

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Subject: Re: Two ISP's to one DMZ
From: Paul Ferguson <pferguso @ cisco . com>
Date: Mon, 07 Jul 1997 15:17:40 -0400
To: marc @ sniff . ct-net . de
Cc: firewalls @ GreatCircle . COM
In-reply-to: <199707070536 . FAA00510 @ sniff . franken . de>
References: <3 . 0 . 32 . 19970706204429 . 006c27a4 @ mail>

At 05:36 AM 07/07/97 +0000, marc @
 sniff .
 ct-net .
 de wrote:

>
>Our local ISP here in Germany told me that it is no good idea to
>advertise networks below /19 , because some carriers filter out BGP
>routes to networks smaller than 8192 addresses.
>
>Is this correct? And if so, what will be the solution for Bertram
>Carrols problem?
>

Yes, there a a few ISP's which filter route announcements which
are longer than a /19, but this is a politicial problem.

- paul


--
Paul Ferguson                                           ||        ||
Consulting Engineering                                  ||        ||
Herndon, Virginia   USA                                ||||      ||||
tel: +1.703.397.5938                               ..:||||||:..:||||||:..
e-mail: pferguso @
 cisco .
 com                         c i s c o S y s t e m s


References:
Indexed By Date Previous: Re: Two ISP's to one DMZ
From: Paul Ferguson <pferguso @ cisco . com>
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From: Roger Rea <rrea @ us . ibm . com>
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From: marc @ sniff . ct-net . de
Next: Re: Two ISP's to one DMZ
From: mikech @ avana . net

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