On Sat, Jun 29, 2002 at 07:42:03PM -0000, Joseph T. Klein wrote: [snip]
The primary problem is the noise of smaller announcements popping on and off magnified by multihoming punching holes in large aggregates.
Small announcement show more churn because they are more granular. They expand the route table thus slowing convergence.
Point: there's a body of data that indicates "multihoming" is not the culprit. There's a lot of needless de-aggregating that has little or nothign to do with multihoming, and mostly to do with lack of clue. Both WRT limiting the scope of provider-based so-called "traffic engineering" (CF ptomaine drafts) and that folks not using large tracts of space can return blocks and get blocks that actually *fit* their need. Unfortunely there's a few companies/consultants whose business plan requires them to graze on the commons and get all in a huff when any of us tell them they're filtered because they are causing incremental damage to our networks. Get over it kids; stable and deterministic behavior is required for IP to work optimally. Stability uber alles, Joe -- Joe Provo Voice 508.486.7471 Director, Internet Planning & Design Fax 508.229.2375 Network Deployment & Management, RCN <joe.provo@rcn.com>