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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: BGP route tracking.
Some updated images of routing table size and 7-day prefix withdrawals:
http://gradus.renesys.com/aug2003/blackout3-rtsize.gif
http://gradus.renesys.com/aug2003/aug7-aug15-withdrawals.gif
(Blackout is event #3 on the right.)
We're about halfway back to the table sizes we started with yesterday
before the grid tripped. If it trends the same way through the
afternoon, it could be back to its old self sometime around midnight
GMT; previous experience suggests that it might stabilize somewhat
higher than before the event.
At any rate, steady improvement as power returns across the East.
----------
James Cowie
Renesys Corporation
[email protected]
> Okay, here are a couple quick screenshots of what we're looking at
> tonight.
>
> First, a plot that shows the routing table size shrinkage since the
> onset of the blackout at 16:13:07 +/- EDT, across a group
> of routers.
>
> http://gradus.renesys.com/aug2003/blackout1-rtsize.gif
>
> Second, a wider-angle 3D plot of prefix withdrawal rates over the
> last week, reported by various peers (one line per).
>
> http://gradus.renesys.com/aug2003/aug7-aug14-withdrawals.gif
>
> The blackout is the big event at the right hand edge (#3).
>
> Note the sustained high rates of route withdrawal that have been
> the norm since the onset of MSBlast. Unlike typical single-cause
> events (like the one marked #1), MSBlast scanning has caused
> prefix withdrawal rates to gently "lift off" into a noiser mode
> across the board, lasting for days (so far).
>
> > (im just getting bored waiting for us to run out of fuel)
>
> Ouch ..
>
>
> ----------
> James Cowie
> Renesys Corporation
> [email protected]
>
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