[nycbug-talk] routing to spaces smaller than /24 (was Re: (I hate IPv6!))

[alex at pilosoft.com]

On Fri, 23 Mar 2007, Brian A. Seklecki wrote:

> Most networks are tiered and layered, thus that border routers with
> multiple full BGP feeds will have 256Mb+ to accommodate without prefix
> size restrictions, but internal reflectors (customer connecting ones) do
> not.
a) nobody accepts anything longer than /24 (from non-customers - for 
example, if you are a customer, you may announce /28 to your carrier, but 
it won't propagate to anyone else on the interwebs)

b) internal reflectors do not connect customers

c) edge routers ("customer-connecting ones") best have full route tables 
otherwise you, the customer, will have partial view of internet.

-alex