[LINK] itN: Perth-Singapore Cable Cut

[Paul Brooks]

On 2/10/2015 12:50 PM, Roger Clarke wrote:
> Cut submarine cable cripples Apple services for Telstra customers
> Break in SEA-ME-WE cable [a week ago] behind slow speeds.
> Allie Coyne
> itNews
> 2 Oct 2015, 10:35AM
> http://www.itnews.com.au/news/cut-submarine-cable-cripples-apple-services-for-telstra-customers-410006
>
> The Internet routes around broken links and congestion?
>
Not congestion. The Internet will route around a broken link - but will happily pile
more traffic into congestion.

Re-routing around a broken link also is dependent on there being an alternative link,
and that it has sufficient headroom (which at all other times might be regarded as
'waste').

With increased amounts of traffic-engineering and path-locking using technologies such
as MPLS to steer traffic onto specific paths and networks, ignoring other possible but
sub-optimal paths, the ability for traffic to flow around a break is also increasingly
reduced.

Paul.