Re: [dhcwg] Discussion of dhc WG rechartering for DHCP authentication

[Ralph Droms <rdroms at cisco.com>]

Does the short lease/long lease scenario scale the DHCP server load  
by more than a factor of two?

- Ralph

On Nov 5, 2007, at Nov 5, 2007,8:50 PM, Richard Pruss wrote:

> Should this conversation not move to the int-area?
>
> Alper Yegin wrote, around 6/11/07 5:19 AM:
> > 1. CPE configures a pre-PANA IP address using DHCP
> > 2. CPE runs PANA
> > 3. CPE configures "session IP address" using DHCP
> The PANA idea if using short lease/long lease DHCP address  
> switching in DSL deployments is simply not feasible.  BRAS's with  
> over 60K subscribers are common and many providers have central  
> city pops of more than a million subscribers.
>
> During a pop restart the 60 second lease on a million subscribers  
> would at best result in a sustained load of more than 16000 DHCP  
> requests / second smashing through the relays and into the DHCP  
> servers until the users had gradually authenticated.
>
> - Ric
>
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