What is the IP scope on the inside of the NAT? RFC1918?
Here's how I'd do it (from what I understand of your setup thus far). I'm
cutting a lot of corners here on the fly, so there will be some wastage at
various points/
1) Star configured LAN for internal desktops and infrastructure.
Concentrator is a generic switch. All equipment here are on network
192.168.0.0/16. You might wish to procure a DHCP server to handle the 512
addresses I've provisioned here.
2) Get rid of the NetTopia, because you'll need extra routing interfaces
than either the Netopia or a 2600 will provide. The switch is hooked up to
a cisco 3600 router equipped with IOS NAT. COnnection is made through
interface e0/0. Default route for the LAN is 192.168.1.254
3) connection to the Internet is made from S1/0 (which is a V.35 connection)
to a CSU/DSU, from where the T1 comes in. RIP should be enabled between
e0/0 and s1/0. IP's should be provided from the ISP in a /30 config. Use
the 2nd of the 4 IPs for the local gateway, and the 3rd for the remote (or
as defined by the telco).
4) connection to the corporate intranet should be to the 3600 s2/0 port
(which accounting for the intranet's use of Frame Relay, will be equipped
with a HSSI conenctor, i think). Since you'll be taking the 2600 out of the
loop altogher, you'll need to figure out somehow the local and far end
gateway IP's on the Frame link. RIP should be enabled only between S2 and
E0 (and NOT between S1 and S2), as anything else might produce unwanted
routing of the intranet to the Internet.
5) build in the appropriate ACLs, and you're set.
BTW, the description of the addressing you have doesn't seem logical. The
Internet T is on the same subnet as the intranet, with same mask yet
different gateways.
"jl" <(E-Mail Removed)> wrote in message
news:59idnU9mvp_POKLdRVn-(E-Mail Removed)...
> Here is my network layout
>
>
> |----------------Netopia
> 5300-------- Internet
> |
> 128.53.1.122
> |
> Subnet 255.255.0.0
> Win98 ---------------------Swich NAT
> IP 128.53.1.149 |
> Subnet 255.255.0.0 |
> Gateway 128.53.1.122 |---------------Cisco
600 ---------Corp
> WAN
> RIP Listner
> 128.53.1.254
>
> Subnet 255.255.0.0
>
> RIP Enabled ???? Not sure
>
>
> There are about 30 Win 98 PCs on the network, I jsut diagramed one, for
> simplicity/
>
> Iam somewhat over my head and need some help.
>
> I have a coporate WAN, frame relay using a Cisco 2600. The IP of the
Cisco
> is 128.53.1.254 (the gateway to the corp.WAN), subnet 255.255.0.0
>
> Also the a T1 interent circuit, using a Netopia 5300. Ip 128.53.1.122,
> subnet 255.255.0.0. NAT Enabled
>
> The WAN line just got upgraded and the router changed from a Cisco 1000 to
> the 2600. All worked fine before the change.
>
> I have work stations (Win 98) set to the 128.53.1.122 as the gateway and
> IRIP Listener installed. The Cisco 1000 did make RIP braodcasts and all
> worked fine. But after the change to the Cisco 2600, I have lost the
Corp
> WAN access. The home office did tell me that RIP was enabled on the 2600.
>
> I have no access to the Cisco 2600 and I can't do any configuration. (The
> home office isnt aware of the internet T1 here). I can make changes to
the
> Netopia.
>
> I thought that I could use the "add route" command and add a route to each
> PC, but I do not have a good understanding of it. And not really sure
that
> works anyways. Another thought was to enalble rip on the Netopia, (rather
> not), but if thats the only choice, ok. (dont want to give away the fact
> that
> I have it).
>
> OK HELP !!!! What do I do? Do I need to completely change the ip
scheme
> of the Netopia?
>
>
>
>
>
>
>
>
>
|
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