Re: [NANOG] OSPF minutia, and, technote publication venues

[Nathan Ward <nanog () daork net>]

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 an anycast feature - anycast prefixes are withdrawn when a cluster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


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