SORBs

Andre Oppermann nanog-list at nrg4u.com
Wed Jul 6 15:18:26 UTC 2005


Sanfilippo, Ted wrote:
> It belonged to some Canadian ISP, I believe it was a cable company. 
> 
> Regarding the aggregation/deaggregation mess. This is due to the fact
> that ARIN is rather strict with IP assignements and how we route
> internally. 
> Because ARIN wants us to use 80% of our ip blocks, before we can request
> new assignments from them we have to dole out addresses in /22's to each
> city we have, in order to use them up appropriately. Its been a bit of a
> nightmare trying to meet ARIN's policies and also try to meet the
> Internet Communities policies. Believe me, I would much rather advertise
> a /16 prefix out to the Internet, rather then a /22. We have not been
> able to accommodate this unfortunately.  

Err...  Why do you say you need to advertise a /22 for each city rather
than the /16 for your entire network?  What's inside your network and
how you distribute your addresses there is not of concern for anyone
outside of your network.  Why don't you advertise the /16 via BGP and
then let the IGP handle the /22 distribution to each city?

-- 
Andre




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