[c-nsp] Per-host IP assignment for L2TP clients to LNS ASR

[Christian Kratzer]

Hi,

On Mon, 9 Jan 2012, Pawlowski, Maciej wrote:
> Hi,
>
> We are going to set-up ASR1001 router for terminating PPP sessions from CPE devices via L2TP.
>
> We must provide per-host IP reservation for each CPE (CPE might be preconfigured first). For some reasons ($:) ) we are looking for using DHCPd instead of CSACS.

why do you need dhcp just to get rid of Cisco Secure Access Control Server ?

Why not just use a different radius server for ppp aaa and be done with it. FreeRadius or Radiator would both do the job. And PPP with IPCP just sounds a lot more natural for L2TP than DHCP does.

Greetings
Christian

> 1. Does IOS-XE support relay of IPCP (or DHCP) requests from PPP clients to DHCP server ?
> 2. Which parameters are forwarded to DHCP server - the point is how DHCPd can identify particular CPE ?
>
> I don't have a lot of experience on this topic, so the help is appreciated.
>
> What about using FreeRadius for this ?

>
> Cheers,
>
> Maciek
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-- 
Christian Kratzer                      CK Software GmbH
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