From: Peter (peter@xxxxxxxxx)
Date: Wed Feb 21 2001 - 02:07:44 GMT-3
For the Cable connection, get a CiscoUBR924. This is a SOHO IOS router with
a cable interface, it even supports VoIP. For the DSL, get a 1700 with the
new WIC-DSL card. You can run HSRP between the two, track the WAN link,
creat equal cost routes out for load balancing, etc. You still may have
problems with point #2 below.
Peter
----- Original Message -----
From: "Foster, Kristopher" <KFoster@C1Communications.com>
To: "'Paul Thomas'" <psthomas@telusplanet.net>; <ccielab@groupstudy.com>
Sent: Tuesday, February 20, 2001 1:37 PM
Subject: RE: off topic: redundant internet connections for small clients
> You may need to look into a hardware solution (www.fatpipeinc.com may have
> what you need). The major problem with trying to load balance with your
way
> is inconsistency:
>
> 1. you are doing per destination load balancing, in which case if one
> provider goes down, or a problem farther up the path occurs, you will
> continue to forward traffic in that direction. The only way it will fail
> over properly is if the connected interface goes down.
>
> 2. you are doing per packet load balancing, other then your packets
arriving
> out of order or at very inconsistent rates, NAT isn't going to work
properly
> (which I can't see anyway of getting around having to do NAT without
having
> your own advertisable address space).
>
> If someone can come up with a decent solution I'd like to hear it too.
This
> is a problem I've seen come up before without resolution.
>
> Kris,
>
> -----Original Message-----
> From: Paul Thomas [mailto:psthomas@telusplanet.net]
> Sent: Tuesday, February 20, 2001 2:02 PM
> To: ccielab@groupstudy.com
> Subject: off topic: redundant internet connections for small clients
>
>
> Hi all,
> Does anyone have any suggestions on configurations to improve =
> interent redundancy for small clients that cannot run BGP. For example a =
> 50-100 user company with both a Cable modem and ADSL connection. I could =
> see how setting up internal servers with an address from each ISP's =
> range would allow access to them from the internet if one link went down =
> (as long as both addresses are listed in DNS). What could you do for =
> internal client pc's to ensure internet connectivity? A router connected =
> to both the cable and ADSL modems could have both listed as default =
> gateways and load balance between the two links to optimize bandwidth =
> utilization. It would only fail over to the other link if the connection =
> between the client company and the ISP went down though. It would be =
> unable to sense a failure in the ISP connection to the Internet backbone =
> for example. Any suggestions of how to optimize this setup further? =
> Without BGP of course ;-)
>
> Thanks everyone,
>
> Paul Thomas
>
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