MCI outage

Mon Apr 14 21:36:02 UTC 1997

Getting two connections from different providers isn't necessarily just for
physical redunancy, but will help you deal with routing problems inside
networks.  I have seen more T1s fail in their last mile than any mile in 
between. [Ala electrical interactions with copper, etc].

Just my opinion.

-Deepak.

On Sat, 12 Apr 1997, Allan Chong wrote:

> Russ Haynal wrote:
> > 
> > This brings up another point I've pondered...  I've noticed that many of
> > the Backbone ISP backbone maps seem to have an amazing amount of similarity
> > - i.e. connections between identicle sets of cities.  I wonder how many
> > different ISP's might be riding within the same Fiber bundle (the one right
> > below some guy's back-hoe)  If BBN and Internet MCI both run inside of
> > MCI's fiber to/from a small ISP's hometown, then it won't make much sense
> > for a small ISP to get a T-1 from MCI and BBN in the name of "redundancy" -
> > If they both can be taken out with one backhoe.  Might this risk still
> > exist if my UUNET/Worldcom fiber also happens to lay 2 feet away from MCI's
> > fiber in the ground in some kind of "telco right of way"
> > 
> 
> Often most of the major carriers will be using the same set of pipes
> across
> bridges and railway/highway overpasses.  AT&T was advertising their 
> "redundant path" network where they supposedly made some effort to avoid
> this.  They were passing out maps and photos of spots with signs from
> all the major carriers.
> 
> Power, gas, etc. are often on those same bridges.
> 
> 
> allan
> 