Large scale Worldcom outage (posted 2002-10-30)

On October 4th, Worldcom/UUNET had a major outage. Worldcom attributes the problems to "a route table issue". It is still unclear what happened, but the rumors indicate a problem similar to the one that AT&T experienced in August: something went wrong while managing the routers, but this time it wasn't a configuration problem, but the problems started after loading a different Cisco IOS image in a large number of routers.