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

[Owen DeLong]

Why not just announce:

192.0.0.0/18
192.0.2.0/24

The more specific /24 would override the /18 where they conflict and the aggregate
would otherwise remain properly routed. No need to announce all of the other
components exclusive of the /24.

Owen

On Apr 5, 2012, at 10:22 PM, 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 ;)
> 
> -- 
> Graham Beneke
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