[cisco-nas] common pool for many NAS

[Aaron Leonard]

> What is the preffered way of using o common pool (/24) in many access routers?

> Let me describe it a little better:

> We have a lot of as5300 where we define locally 2 pools: 1 big (/24) and 1 small (/30),

So EACH 5300 has its own locally defined /24 pool and 
/30 pool?

And these 5300s are not all centrally located on one LAN,
but are located at various places in your IP WAN?

> for 2 kinds of dialup customers. The 2 customer kinds have different profiles in our
> radius, which define different local pools names for each one.

> We want to define all these small /30 networks as a /24 in a central router/server and
> those specific customers to get ips from this router/server.
> The problem is that we want to use such a method through aaa/radius, so we won't need to
> create another group-async/dialer/vtemplate interface on the as5300.

> Ofcourse, the central router/server should take care in order to not give the same ip
> concurrently on 2+ users (even on different as5300s), like in local pool ip addressing.

Sounds to me like one good answer is to have RADIUS assign
the IP addresses.

> Could dhcp be the solution in our problem?

Yes, you could use DHCP for this too.  That is,
DHCP from the DHCP server to the 5300; the 5300
would proxy the info from DHCP to IPCP for the
clients.

> If yes, wouldn't there be problems with dhcp/bootp requests across our wan/lan inks?
> Helper-address seems to address this issue, but then why should all broadcasts be
> forwarded to the central router/server?

DHCP doesn't have to use broadcasts; you could just
configure an explicit DHCP server address on the 
AS5300s, so DHCP would use unicasts.

Aaron

> --
> ***********************************
>     Chatzithomaoglou Anastasios
> Network Design & Operations Center
>            FORTHnet S.A.
>        <achatz at forthnet.gr>
> ***********************************


> _______________________________________________
> cisco-nas mailing list
> cisco-nas at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-nas