nanog mailing list archives
Re: Persistent BGP peer flapping - do you care?
From: "Joel Baker" <lucifer () lightbearer com>
Date: Sun, 20 Jan 2002 14:02:15 -0700
On Thu, Jan 17, 2002 at 05:42:53PM -0500, Vijay Gill wrote:
On Thu, 17 Jan 2002, Dave Israel wrote:It's a question of robustness; if the new spec includes a way to be tolerant of how the spec is (or can be) commonly abused, then the followers of the spec will not be at the mercy of those who deviate. In this case, I think that having the option to keep a session that gives bad routes up, and just dropping the route, is a good answer. That would allow the user to determine which is preferable for a given peer: possible corruption or certain disconnection.If you have a "bad route" how do you know the rest of the update is good? The nlri may have gotten corrupted on the wire or between the interface and the processor (parity error, or some sort of corruption on the bus). Given that case, in an update, I am not sure you can make a determination of what is good nlri and selectively propogate and process those. See also meltdowns circa nov 1998.
There was another notion that never made it off the drawing board (not even into proposal) regarding "graceful error recovery", a way to assume that your peer's *entire* table wasn't suspect, just the malformed part, and notify the peer that there was a problem. Do this too many times, and you drop the session, still, of course. The not-even-a-formal-draft is still around somewhere. -- *************************************************************************** Joel Baker System Administrator - lightbearer.com lucifer () lightbearer com http://users.lightbearer.com/lucifer/
Current thread:
- Persistent BGP peer flapping - do you care? Susan Hares (Jan 17)
- Re: Persistent BGP peer flapping - do you care? Christopher A. Woodfield (Jan 17)
- Re: Persistent BGP peer flapping - do you care? Clayton Fiske (Jan 17)
- Re: Persistent BGP peer flapping - do you care? Susan Hares (Jan 17)
- Re: Persistent BGP peer flapping - do you care? Christopher A. Woodfield (Jan 17)
- Re: Persistent BGP peer flapping - do you care? Jake Khuon (Jan 17)
- Re: Persistent BGP peer flapping - do you care? Dave Israel (Jan 17)
- Re: Persistent BGP peer flapping - do you care? Vijay Gill (Jan 17)
- Re: Persistent BGP peer flapping - do you care? Dave Israel (Jan 17)
- Re: Persistent BGP peer flapping - do you care? Joel Baker (Jan 20)
- Re: Persistent BGP peer flapping - do you care? Susan Hares (Jan 17)
- Message not available
- Re: Persistent BGP peer flapping - do you care? Susan Hares (Jan 18)
- Re: Persistent BGP peer flapping - do you care? Jake Khuon (Jan 18)
- Re: Persistent BGP peer flapping - do you care? Christopher A. Woodfield (Jan 19)
- Re: Persistent BGP peer flapping - do you care? Christopher A. Woodfield (Jan 17)
- recommendation for open source based Arman (Jan 18)
- RE: recommendation for open source based Christopher J. Wolff (Jan 18)
- <Possible follow-ups>
- Re: Persistent BGP peer flapping - do you care? Dickson, Brian (Jan 17)
- RE: Persistent BGP peer flapping - do you care? Tony Hain (Jan 17)
- Re: Persistent BGP peer flapping - do you care? Brett Frankenberger (Jan 18)