The portmaster always uses it own ip on your ethernet.
And according to my calculations (which are sometimes wrong)
255.255.255.248 is not /30. It's a /29, which is 8 ip's.
Mury
mury@goldengate.net 612-574-2200 Office
GoldenGate Internet Services 612-574-2444 Fax
50% Swedish 50% Hungry ;)
On Thu, 24 Apr 1997, Chris Shenton wrote:
> We've got a PM2e running ComOS 3.5 with a /24 network from which we're
> pulling:
>
> 1. /30 subnets for the PtP links to remote subnets
> 2. /29 and /28 subnets for the remote subnets themselves (6 and 14 hosts)
>
> We'll want to route over the PtP POTS serial link to the users' remote
> subnets.
>
> The online HTML RADIUS manual (Oct 96) indicates I might specify the
> user, PtP link, and PtP netmask like:
>
> chris Password = UNIX
> Service-Type = Framed-User,
> Framed-Protocol = PPP,
> Framed-IP-Address = 208.218.26.14,
> Framed-IP-Netmask = 255.255.255.248,
> Framed-Routing = Broadcast-Listen
>
> Which would specify the remote end of the PtP as 208.218.26.14 with a
> /30 subnet. This is for the PtP link only, not the remote subnet.
>
> Is this correct? Does the Portmaster assign to its own end the
> 208.218.26.13 address from the same /30 subnet, automagically?
>
>
> Now I need to tell the PM about the remote subnet. Again, the HTML
> manual says:
>
> The Framed-Route reply item adds a route to the PortMaster's routing
> table when service to the user begins. Three pieces of information are
> required; the destination IP address, gateway IP address, and
> metric. An example is shown below.
>
> bob Auth-Type = System
> Service-Type = Framed-User,
> Framed-Protocol = PPP,
> Framed-IP-Address = 150.128.1.1,
> Framed-Route = "150.128.1.0 150.128.1.1 1"
>
> so I would think I could tell it about my remote subnet by adding a
> line:
>
> Framed-Route = "208.218.26.192 208.218.26.14 1"
>
> specifying the first address in my remote /28 subnet.
>
> Is this correct? How does it know my remote net is really a /28 and
> not a /24 (Class C) as the manual's example implies?
>
> The manual section on "Framed-Routing" talks about RIP, but RIP
> doesn't understand subnets, let alone VLSMs like I'm trying to use
> here. I also understand ComOS 3.5 supports OSPF, and I need that to do
> VLSMs (I think).
>
> I'm OSPF-challenged. Does Framed-Routing also turn on OSPF support? Has
> Framed-Route been extended to support inclusion of a netmask size in
> the specification, maybe like:
>
> Framed-Route = "208.218.26.192/28 208.218.26.14 1"
>
> Or is there a different way to do it?
>
> Any help would be most appreciated. Thanks.
>