Flapping (was Re: Cisco IOS Vulnerability)

On Thu, 17 Jul 2003, Jason Lixfeld wrote:

This wouldn't be the "My gig port's down, and now it's up again..." song would it? :)

Folks may remember when ISPs were responding to the SNMP vulnerability many backbones were rebooting their routers during maintenance windows. At the time, some people monitoring BGP and other things thought the Internet was under attack because a huge portion of the net bounced early in the morning. In reality it was just one backbone during a global router reboot. Don't panic if you see BGP flaps from backbones during the next few weeks.