[AfriNIC-rpd] AFPUB-2006-GEN-001 and Anycast

[Graham Beneke]

On 07/04/2012 10:34, Alan Barrett wrote:
> What's wrong with the obvious approach? Like this:
>
> 1. get a /18 block.
> 2. carve out a /24 from inside the /18.
> 3. announce the /18 to everybody.
> 4. announce the /24 to only some peers.
>
> Not so obvious:
>
> 5. optionally, tag the /24 with a special community to encourage your
> peers not to propagate the announcement further. Perhaps no-export
> would be a reasonable choice.

There is a specific requirement that the prefix does not appear in the 
routing table of certain peers and is un-routable from their 
perspective. Thus it can not appear as part of an aggregate either.

You can read the details in this GSMA document:
http://www.gsma.com/documents/ir-34-5-0-inter-service-provider-ip-backbone-guidelines/20211/

While I understand that their could be other ways to achieve the 
objectives, a global body has already standardised this across many of 
our members. Is it not wise to build policies that adequately provide 
for these requirements?

-- 
Graham Beneke