From owner-freebsd-net  Thu Oct 26  8:40:27 2000
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Date: Thu, 26 Oct 2000 17:40:07 +0200
From: Sven.Huster@t-online.de (Sven Huster)
To: freebsd-net@freebsd.org, freebsd-isp@freebsd.org
Subject: Re: high availability by routing?
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hi

sorry, but i should go into more detail.

all my machines will be run freebsd, also the routers.

so if i setup some kind of dynamic routing on _all_ machines,
will there be something like high availability or not?

thanks

sven

> hi there,
> 
> at the moment i have following setup:
> 
> |isp| --- |my router| -- |switch| -- |loadbalancer| -- |web farm|
> 
> i want to improve availability by adding a second loadbalancer and 
> a second router + a second connection to my network provider to
> eliminate the single point of failure (i know about the single
> switch).
> 
> so the setup then will be:
> 
> |   | -- |router 1| -- |      | -- |loadbalancer 1| -- |        |
> |isp|                  |switch|                        |web farm|
> |   | -- |router 2| -- |      | -- |loadbalancer 2| -- |        |
> 
> but
> 1. how is routing managed between isp and my routers?
> 2. what happends if one router fails or one isp connection is broken?
> 3. how does the loadbalancer recongnizes that one router fails?
> 4. how do i tell my routers to distribute traffic between the
>    loadbalancers equal?
> 5. how can i handle the failure of one loadbalancer?
> 
> maybe i will extend the setup with another connection to a other isp.
> 6. how will this fit in my environment?
> 
> thanks a lot
> regards
> Sven
> 
> --
> Sven Huster
> Consultant - *BSD, Linux, Solaris
> 


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