On Fri, 10 Jun 2011 13:27:58 PDT, Leo Bicknell said:
The funny thing is, no one does this anymore. We turned off RIP, turned off routed, and invented things like HSRP to handle router redundancy. These things weren't done because someone was bored, no, they were done because these RIP deployments failed, repeatedly and often. Any device could broadcast bad information, and they did. It could be a legitimate network admin plugging a cable into the wrong jack, or it could be a hacker who rooted a machine and is injecting bad information on purpose.
Has senility set in, or wasn't there even an incident where somebody advertised 127/8 via RIP - and lots of nodes *believed* it, even though they should have realized that they had an interface on that network already? (And yes, I know of *multiple* failures of broadcasting a default route and getting swamped as a result - this one was 127/8 specifically)...