[outages] [Outages-discussion] UK wide DSL broadband outages

[Jay Ashworth]

----- Original Message -----
> From: "Paul Lettington" <paul at plett.co.uk>

> On Fri, Oct 21 2011 08:10:02 -0500, Frank Bulk wrote:
> > Why did a 15-minute outage cause subtended customers to be out for
> > much longer than that?
> 
> Because BT's RADIUS servers which look at the realm of the login and
> route the session to the correct ISP are unable to cope with the load of all the
> ADSL users in the country continually reconnecting during an outage like
> this.
> 
> So when BT can't connect the end user to the ISP they accept the end
> user's session themselves with a RFC1918 IP address for exactly an hour and
> not connected to the internet, to stop them trying to log in.

Sounds to me like they need to change that to "15 minutes + 1 minute * rand(10)

Cheers,
-- jra
-- 
Jay R. Ashworth                  Baylink                       jra at baylink.com
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