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

[Mark Elkins]

I'm in the enviable position of having a large contiguous block of IP's
(my 160.124.00/16) and a smaller block of IP's (192.96.24.0/22) as well
as two discrete /24's. I actually use these addresses in a manner that
Graham talks about - some of these smaller blocks are only announced on
a local basis in South Africa, others are only announced from the UK and
not from South Africa.

ie - I somewhat understand the issue.
and.. one can't do this in IPv6 land with a single /32.

Should IP allocations from AfriNIC be concerned about router
aggregation? To an extent - yes.

Maybe some sort of recognition that if an ISP can show a technical
requirement for a 'loan ranger' /24, they should be able to get one.
Maybe an assumption is they have at least a /20 ???

We should add some parallel criteria for the same in IPv6 land. If you
have a /32, maybe you should be able to request a separately
routeable /48?

So yes - maybe the policy could be more generalised.

On Fri, 2012-04-06 at 07:22 +0200, Graham Beneke wrote:
> On 05/04/2012 21:48, McTim wrote:
> > If I understand correctly, they could have used one of their allocated
> > /24s for this, no?
> 
> To number the infrastructure - yes perhaps. To achieve the required BGP 
> routing policy - no.
> 
> I don't know of any practical way to carve a single /24 out of a /18. 
> Then to announce that /24 to certain peers but not announce to others 
> and still ensure well aggregated announces of the /18.
> 
> If the member could receive one additional /24 then they could announce 
> the following:
>   * /24 prefix
>   * /18 prefix
> 
> The alternative is to announce:
>   * /24 prefix
>   * /19 prefix
>   * /20 prefix
>   * /21 prefix
>   * /22 prefix
>   * /23 prefix
>   * /24 prefix
> 
> I know which I'd prefer to see in the global table ;)
> 

-- 
  .  .     ___. .__      Posix Systems - (South) Africa
 /| /|       / /__       mje at posix.co.za  -  Mark J Elkins, Cisco CCIE
/ |/ |ARK \_/ /__ LKINS  Tel: +27 12 807 0590  Cell: +27 82 601 0496

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