Re: Curiosity about AS3356 L3/CenturyLink network resiliency (in general)

[Luca Salvatore via NANOG <nanog () nanog org>]

To answer your specific question - In the regions we use 3356 (NYC and
SFO/Bay Area) 3356 have been solid. I’d even say they have less issues than
the other usual tier 1 providers... for example 1299 had a hell of a week
last week around SFO was 3356 was stable.

Can’t comment on what I’d say are small regions like Tampa though.

On Sat, May 19, 2018 at 5:56 PM David Hubbard <dhubbard () dino hostasaurus com>
wrote:

> Yes, I do, as stated in my initial email.  My inquiry is about whether
> this level of downtime, and lack of redundancy for a given region, is
> normal for 3356.  There are some markets where diverse paths are not so
> easy to acquire.
> ________________________________
> From: Robert DeVita <radevita () mejeticks com>
> Sent: Saturday, May 19, 2018 5:36:23 PM
> To: David Hubbard; nanog () nanog org
> Subject: Re: Curiosity about AS3356 L3/CenturyLink network resiliency (in
> general)
>
> If this is a know issue and has happened before and point to point
> circuits aren’t effected you always have the opportunity to diversify your
> own network and get private lines back to Miami, Jax, Atlanta or Dallas to
> create your own diversity don’t you?
>
> Robert DeVita
> Managing Director
> Mejeticks
> c. 469-441-8864
> e. radevita () mejeticks com
> _____________________________
> From: David Hubbard <dhubbard () dino hostasaurus com>
> Sent: Wednesday, May 16, 2018 12:03 PM
> Subject: Curiosity about AS3356 L3/CenturyLink network resiliency (in
> general)
> To: <nanog () nanog org>
>
>
> I’m curious if anyone who’s used 3356 for transit has found shortcomings
> in how their peering and redundancy is configured, or what a normal
> expectation to have is. The Tampa Bay market has been completely down for
> 3356 IP services twice so far this year, each for what I’d consider an
> unacceptable period of time (many hours). I’m learning that the entire
> market is served by just two fiber routes, through cities hundreds of miles
> away in either direction. So, basically two fiber cuts, potentially 1000+
> miles apart, takes the entire region down. The most recent occurrence was a
> week or so ago when a Miami-area cut and an Orange, Texas cut (1287 driving
> miles apart) took IP services down for hours. It did not take point to
> point circuits to out of market locations down, so that suggests they even
> have the ability to be more redundant and simply choose not to.
>
> I feel like it’s not unreasonable to expect more redundancy, or a much
> smaller attack surface given a disgruntled lineman who knows the routes
> could take an entire region down with a planned cut four states apart.
> Maybe other regions are better designed? Or are my expectations
> unreasonable? I carry three peers in that market, so it hasn’t been
> outage-causing, but I use 3356 in other markets too, and have plans for
> more, but it makes me wonder if I just haven't had the pleasure of similar
> outages elsewhere yet and I should factor that expectation into the design.
> It creates a problem for me in one location where I can only get them and
> Cogent, since Cogent can't be relied on for IPv6 service, which I need.
>
> Thanks