So Philip Smith / Geoff Huston's CIDR report becomes worth a good hard look today

Patrick W. Gilmore patrick at
Wed Aug 13 23:53:45 UTC 2014

On Aug 13, 2014, at 16:42 , Randy Bush <randy at> wrote:

> half the routing table is deagg crap.  filter it.  

We disagree.

Just because you don't like all more specifics doesn't mean they are useless.

Not everything is about minimizing FIB size. (And RIB size hasn't been relevant for years.) People pay an ass-ton of money to save a few ms off their RTT, if a more specific will allow packets to travel LHR->FRA directly instead of packets going from LHR -> SFO -> FRA, they are useful even if there is a covering prefix.

> you mean your vendor won't give you the knobs to do it smartly ([j]tac
> tickets open for five years)?  wonder why.

Might be useful if you mentioned what you considered a "smart" way to trim the fib. But then you couldn't bitch and moan about people not understanding you, which is the real reason you post to NANOG.


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