Flapping (was Re: Cisco IOS Vulnerability)

Thu Jul 17 05:39:52 UTC 2003

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.