Hi,
Thank you for your answers,
It seems to be a real problem:
Many organizations don't have and don't need the large address
space to live with BGP with today's /19-filtering.
I'm VERY interersted How do networkers solve this problem?
In advance,
Alexis.
At 05:28 24.07.97 +0200, Bernd Eckenfels wrote:
>On Jul 23, Alexis Vassiliadis wrote
>> Suppose I'm dual-homed, my web-server have 2 ip-addresses from 2 different
>> spaces of 2 different providers.
>
>Yes.. most of the time.
>
>> Will it be "backup" if one of my 2 links to providers will go down?
>> I.e., Does a browser poll another address from dns-reply if 1st is not
>> available?
>
>Yes and now. Usually the Browser will not try all of the A Records, but the
>first one. The "first" one is different on each query, since the DNS Servers
>and Resolvers do RR rolling. A user will need to 'reload' and perhaps the
>browser does a new Lookup. This will most likely fail with Proxies in
>between, cause Proxies do DNS Caching and negative Connection Caching on
>Host-name base.
>
>If one ISP fails you will be still reachable, but not without troubles to
>the users. (it is of course better than 1 ISP, but not as failsafe as one
>might guess).
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