North American Network Operators Group|
Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical
Re: UUNET issues?
I actually asked Stephen if he was referring to the LSA corruption problem and he said he was referring to an earlier issue (circa 1972).Anyway, I don't think that would have helped if you're talking about the same incident I'm thinking of. There were application-level retransmissions of (corrupted) packets, complete with building new bad packets from bad data structures, all over the net The problem is documented in RFC 789 It and "The Bug Heard 'Round the World" are two of my favorite "how complex systems fail" papers; all system designers should read, memorize, and undertand both.
As for the LSA issue- rebooting would have fixed the problem, assuming it was done by all nodes at the same time. All of the Link State tables would have been rebuilt from scratch by the IMPs and the corrupt announcements would have been gone.
As I recall the IMP software was actually patched to ignore the problematic announcements from IMP 51.