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North American Network Operators Group

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RE: using ARIN assigned address in Asia

  • From: Daniel Golding
  • Date: Thu Mar 22 11:16:33 2001

I am unaware of ANY service provider who filters on /19s anymore, excepting
old Class B space, which is usually filtered on /16s. Because the RIR's
issue /20s, everyone accepts them. Your milage may vary, of course.

- Daniel Golding

> -----Original Message-----
> From: owner-nanog@merit.edu [mailto:owner-nanog@merit.edu]On Behalf Of
> Chris Gibiault
> Sent: Thursday, March 22, 2001 5:07 AM
> To: Arnd Vehling; Kenji Anzai
> Cc: nanog@merit.edu
> Subject: RE: using ARIN assigned address in Asia
>
>
>
>
> OR ...
>
>
> 	You could always be sure and connect to the same "backbone"
> provider in
> each location. then said provider can aggregate the two /20's to a /19. If
> you need/want a second backbone provider in each location. get a
> connection
> between the US and Asia locations. You could even do this as a
> tunnel using
> just the port addresses of each connection. OF course a tunnel
> may not scale
> very well and might not be "a good thing".  There are just so many ways to
> make sure that  /19 is announced to the "filtering" majors ...
>
>
> -Chris
>
> -----Original Message-----
> From: owner-nanog@merit.edu [mailto:owner-nanog@merit.edu]On Behalf Of
> Arnd Vehling
> Sent: Thursday, March 22, 2001 3:05 AM
> To: Kenji Anzai
> Cc: nanog@merit.edu
> Subject: Re: using ARIN assigned address in Asia
>
>
>
> Hello,
>
> Kenji Anzai wrote:
> > Our client has IP address space that was originally assigned from ARIN.
> > Their address space is a big enough to separate to /20 each.
> >[..]
> > They would like to use front half (/20) in North America.
> > And, they would like to use the other half of the address space (/20) in
> > Asia.
>
> By using i.e. announcing ip-ranges < /19 you risk beeing filtered by one
> of the major ISPs.
>
> I wouldnt recommend splitting it up in 2 * /20.
>
> regards,
>
>   Arnd
> --
>
> NetHead                         Network Design and Security
> Arnd Vehling                    av@nethead.De
> Gummersbacherstr. 27            Phone: +49 221 8809210
> DE-50679 Cologne                Fax  : +49 221 8809212
>
>






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