Daniel is quite right, if least interrupted connectivity is so crucial 
to you, your best bet is to find the most reliable ISP in your area. In 
my experience that would be the so-called Tier 2 ("transit") carriers --
 they will have the fully redundant connectivity to multiple Tier 1 
("long-haul") carriers or possibly direct connection to a NAP/IX. And 
the redundancy they have is of the kind you cannot get at your 
location, which is diverse egresses from the building. No matter how 
many ISP's you connect at your location, unless you use different media 
(such as radio or cable), your last-mile delivery is going to be in the 
same bundle of copper wires or over the same strand of fiber, so that a 
cut or any other telco problem will affect both links simultaneously.


On 18 Jun 2009 at 18:52, Daniel Ouellet wrote:

> Hi, here is a few ideas for you.
> 
> A few things to think about here depending on what issue you really try to 
> solved.
> 
> First a good ISP after you actually reach them have built redundancy on their
> network, so unless you try a cheap one, then you should be fine there.
> 
> Then what could go wrong? Well plenty yes, but less take them.
> 
> - Power, well UPS, if UPS runs out, two ISP will do nothing.
> 
> - single router blow up, same thing. So, you designed it with two as you put 
> it,
> great.
> 
> - Local loop, last mile, well if it get cut, then it's cut and needs to be 
> fix.
> 
> So two line needs to come in.
> 
> One solution may be as simple as getting these two lines form the same ISP and
> have them merge together.
> 
> Like if you use T1 for example, then they could be bundle together via PPP and
> allow you to use the full capacity of both and if one goes down, you still 
> have
> the first one and nothing is lost, no traffic is lost and all continue, just
> slower. You might be able to get it cheaper if both from the same ISP as well
> and they would need to be provision on the same router on their end anyway to
> merge them.
> 
> This way, you don't need BGP, you get backup as you want to get, on line goes
> dead, you still have the second one.
> 
> But then, you don't have your IP problem and believe me, getting any IP's from
> ARIN these days is pretty darn hard! Unless you want IPvShit, then you will be
> giving them right away. They change their policy last month if my memory is 
> good
> and you sure can get it for your site, but then, you hell open a truck load of
> other issues however.
> 
> This combine lines also address your requirement of balancing your traffic, 
> but
> in this case, you don't need anything special, it works no problem.
> 
> I don't know how things are in Chicago, but if it is like hereon the east 
> coast,
> looks like Verizon enjoy playing with wire in central office and disconnect
> lines at random. I don't really think they are doing that, but sure hell look
> like it however as problem are always with the local loop!
> 
> So, this may well works for you and get you want you want to do.
> 
> Just a thought anyway for your consideration that may address your needs in a
> different way.
> 
> Best,
> 
> Daniel
> 
> 

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