[c-nsp] PPPoE and DHCP

[Frank Bulk]

Then it's pretty clear that the BRAS is in control, and may be using
"max-lease time" rather than "default-lease time".

If I review the DHCP logs for a well-behaved PPPoE/A link I should probably
be able to figure it out.

Regards,

Frank

-----Original Message-----
From: Gert Doering [mailto:gert at greenie.muc.de] 
Sent: Sunday, October 21, 2007 9:51 AM
To: Frank Bulk
Cc: 'Eric Helm'; cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] PPPoE and DHCP

Hi,

On Thu, Oct 18, 2007 at 07:35:46PM -0500, Frank Bulk wrote:
> What's not clear to me is who handles DHCP renewals....if the router
> requests that from the external DHCP server and uses IPCP to pass that on
to
> the PPPoA/E client, or the PPPoA/E client initates that and the router
> tracks it.

As there is no way to signal a lease time via IPCP, and no way (besides
closing and re-establishing IPCP) to renew the address received by IPCP,
I see the latter as "quite unlikely".

gert
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