On Sat, 19 Jan 2008, Andy Davidson wrote:
On 15 Jan 2008, at 16:11, Ben Butler wrote:
As a transit consumer - why would I want to carry all this cr*p in my routing table, I would still be getting a BGP route to the larger prefix anyway - let my transit feeds sort out which route they use & traffic engineering.
Maybe you don't get covering aggregates. That causes holes. Whether you care is a matter of local policy, though. :-)
There's no maybe about it. Filtering on RIR minimums will result in the more clue deprived networks disappearing from your view and a loss of reachability unless you have default pointed at some network not using such a filter. Since I've gotten several requests recently for the "latest version" of what I posted back in September (I guess others are starting to get worried/close to their limits), I decided this was a good time to setup some blog software (late last night)...and I posted the filter and a brief intro to http://jonsblog.lewis.org/ ---------------------------------------------------------------------- Jon Lewis | I route Senior Network Engineer | therefore you are Atlantic Net | _________ http://www.lewis.org/~jlewis/pgp for PGP public key_________