[NANOG] OSPF minutia, and, technote publication venues

Tue May 6 01:49:39 UTC 2008

On 6/05/2008, at 1:21 PM, Joe Abley wrote:

> On 5 May 2008, at 20:50, Nathan Ward wrote:
>
>> Perhaps what would make more sense here is Foundry (F5, etc.)  
>> building
>> an anycast feature - anycast prefixes are withdrawn when a cluster
>> relying on that anycast prefix goes below a threshold.
>
> I'm not sure exactly what feature is required, here. f5s of my  
> acquaintance are already very capable of making OSPF LSAs based on  
> virtual servers' pools being non-empty. Do it on more than one f5 in  
> the same area, and you're anycasting service availability with the  
> current feature set.

Can they do it with BGP for Internet anycast?

> The general reason why people prefer to find alternative solutions  
> rather than use dedicated load-balancers are that the dedicated load- 
> balancers are hellishly more expensive than the $5 gigabit switch  
> you probably already have in your garage.

The dedicated load balancers also talk BGP (well, ones I've played  
with), so that does away with the need for a BGP speaking router.

--
Nathan Ward