[ppml] Re: ASN-based prefixes for leaf ASes

Hyunseog Ryu HRyu at norlight.com
Wed Mar 24 11:04:54 EST 2004

I believe there is a policy for micro-allocation from ARIN.


Hyunseog Ryu / CCDA, MCSE, CCIE candidate(written test passed)
Senior Network Engineer/Applications Engineering
Norlight Telecommunications, Inc.
13935 Bishops Drive
Brookfield, WI 53005
Tel. +1.262.792.7965
Fax. +1.262.792.7733
email: hryu at norlight.com

                      Anthony DeBoer                                                                          
                      <adb at onramp.ca>          To:       ppml at arin.net                                        
                      Sent by:                 cc:       (bcc: Hyunseog Ryu/Brookfield/Norlight)              
                      owner-ppml at arin.n        Fax to:                                                        
                      et                       Subject:  Re: [ppml] Re: ASN-based prefixes for leaf ASes      
                      03/24/2004 09:47                                                                        

william(at)elan.net wrote:
> Now if you compare the policies for IPv4 ARIN does have a policy that
> multihoming (i.e. = has ASN) is an automatic justification for /24 from
> one of the upstreams.  ...

Speaking of which, is there no swamp space left unallocated, or available
for reclamation?

Using a /24 from an upstream has disadvantages; many backbones filter
/24s in newer address space, and if the site later changes upstreams and
drops the original one, they'll need to renumber.

Ideally, since ARIN has to deal with the new multihomed site anyway to
issue an ASN, a truly portable /24 could be issued along with it.

Anthony DeBoer
Onramp Technical Support

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