Date: Sat, 13 Nov 2004 15:59:34 +0000 (UTC) From: "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net> To: Josh Coombs <kurlon@gwi.net> Cc: freebsd-net@freebsd.org Subject: Re: Netgraph node with inet and ethernet hooks? Message-ID: <Pine.BSF.4.53.0411131545240.85716@e0-0.zab2.int.zabbadoz.net> In-Reply-To: <CE8F4C4A-3589-11D9-98D1-00039348130C@gwi.net> References: <CE8F4C4A-3589-11D9-98D1-00039348130C@gwi.net>
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On Sat, 13 Nov 2004, Josh Coombs wrote:
> I'm trying to find a way to get PPPoE half-bridging functionality
> working with FreeBSD, similar to what Cisco routers and many older ISDN
> routers can/could do. Basically, I'm trying to get the ip/subnet
> assigned to the ppp link usable on an ethernet interface.
I am going to assume the FreeBSD should be the NAS and not the CPE.
> So, on the radius side, you have (format is off, I know...)
>
> user dsluser, prefix=P
> fixed-address = 10.0.0.1
> fixed-netmask = 255.255.255.0
what I though that Cisco, etc. are actually doing is:
user dsluser, prefix=P
fixed-address = 10.0.0.0
fixed-netmask = 255.255.255.0
to take the first IP out of the subnet and assign it to the
remote end:
Cisco:
int Lo1
192.168.199.17
int Vt1
ip unnumbered Loopback1
so the link would look like:
NAS: CPE:
Cisco <- 192.168.199.17 PtP 10.0.0.1 -> DSL router
^ ^
\-------------/
IPCP handshake
And further the cisco adds a route like
route add 10.0.0.0/24 10.0.0.1
But I still call that a HACK. Use a transfer IP for the customer
(static or out of a pool) for IPCP PtP link and route the /24 to
this IP then.
user dsluser, prefix=P
Framed-IP-Address = "172.16.36.1",
Framed-IP-Netmask = "255.255.255.255",
Framed-Route = "10.0.0.0/24 172.16.36.1"
you need one single extra IP for that but it's a lot "cleaner" and
should always work w/o problems.
--
Bjoern A. Zeeb bzeeb at Zabbadoz dot NeT
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