Some doubts on large scale BGP/AS design and black hole routing risk
hank at efes.iucc.ac.il
Mon Apr 4 19:04:42 UTC 2016
On Mon, 4 Apr 2016, Christopher Morrow wrote:
> different providers, different entrance facilities in the building(s),
> different conduits out of the area... and hope that somewhere along the
> path providerA and B didn't share conduit or capacity-swap you to a single
> path :)
I would suggest also different provider equipment. If one provider uses J
find your second provider that uses C.
Also don't be seduced by a provider that offers 2 disparate paths, using
two totally different systems. I remember years ago AT&T's ATM and FR
systems both died nationwide due to some equipment bug.
Also providers lie either intentionally or by mistake. If they state a
circuit is protected, it might be this month, but next month it may not
be. You may only discover this 3 years from now when the circuit dies,
and the provider is happy to pay the SLA penalty which is far less than
the 3 year cost of a protected vs a non-protected circuit.
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