On Wed, Nov 11, 2009 at 11:18:20AM -0800, Steve Gibbard wrote:
> If you have three components, the chances of all three being broken at
> once are even less than the chances of two of them being broken at
> once. With four, you're even safer, and so on and so forth. But once
> you get beyond two,
* a...@baklawasecrets.com
> - I could ask the question as to whether I can peer with separate
> routers on each of the upstreams. i.e. to protect against router
> failures on their side.
If you're getting transit from two different upstreams, you're pretty
much guaranteed to be connected to two
It is wise to stack the deck in your favor, but you'll never really
know how much real redundancy you've purchased:
http://www.atis.org/ndai/ATIS_NDAI_Final_Report_2006.pdf
David
On Wed, Nov 11, 2009 at 3:41 PM, wrote:
> I suppose I could take the whole resilience thing further and further
I suppose I could take the whole resilience thing further and further and
further. One of the replies used a phrase which I thing captured the problem
quite nicely: "diminishing returns".
Basically I could spend lots and lots of money to try and eliminate all single
points of failure. Clearl
The thing to remember about redundancy is that it's a statistical game
rather than a magic formula.
You can be reasonably sure that any single component will go down at some
point. Nothing works perfectly. Few things last forever.
If you have two fairly reliable components, and if they're s
Dylan Ebner wrote:
IF you only have one entrance, all you connections are going to run through
that conduit, and that makes you susceptable to a rouge backhoe.
Not just the rouge ones. The big yellow ones are far more common and
can do just as much damage.
--
Jay Hennigan - CCIE #7880 - Ne
You question has many caveats. Just having two providers does not necessarily
get you more resiliency. If you have two providers and they are terminating on
the same router, then you still have a SPOF problem. You also need to look at
pysical paths as well. If you have two (or three) providers
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