RE: dsl dilemna

Jim,
        It is absolutely possible for a host on a 10.x.x.x network to
talk to a host on a 172.16.x.x network. The 2 things that might be a
problem are routing and security.  If there is a firewall between your
AS/400 and your client, it might be happily throwing away every packet
you send (note that an access list on your dsl router might be doing
that). The other problem is routing, if host A can talk to router B, and
host C can talk to router B, but A cannot talk to C then B is not
routing the packets correctly. 


        What I would do is try a ping and tracert from AS/400 to router,
and from client to router. Then call bellsouth and have them log into
the DSL router and ping your AS/400 and your client.  If all of those
test work then I would strongly suspect that it is something the DLS
router is failing to do (either blocking with an access list or failing
to route properly). If you post the routing table of the AS/400 and the
client that might help.

chris

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Jim Franz
Sent: Thursday, April 28, 2005 10:21 AM
To: Midrange Systems Technical Discussion
Subject: Re: dsl dilemna

>What does the routing table look like on your dsl router?

dsl router belongs to Bellsouth & I have no access to it.

Is is possible for a 400 to be accessed by a user w/ a 172.16.x.x
address thru a router with a 10.x.x.x address. My route on 400 cfgtcp
to the 10. address. I did try adding a 172.16 address to the iSeries,
and
a route, but that did not solve it (and have now removed it).
jim
----- Original Message ----- 
From: "Chris Payne" <CPayne@xxxxxxxxxxxxxxx>
To: "Midrange Systems Technical Discussion" <midrange-l@xxxxxxxxxxxx>
Sent: Thursday, April 28, 2005 10:07 AM
Subject: RE: dsl dilemna


> 2 things, the first might just be nitpick, but 172.x.x.x is not all
> valid private address it needs to be 172.16.0.0 through
172.31.255.255.
> from your description of what is going on is sounds like a routing
> problem on your dsl router. Packets make it as far as the router, but
> then disappear. What does the routing table look like on your dsl
> router?
>
> -----Original Message-----
> From: midrange-l-bounces@xxxxxxxxxxxx
> [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Jim Franz
> Sent: Thursday, April 28, 2005 9:53 AM
> To: MIDRANGE-L@xxxxxxxxxxxx
> Subject: dsl dilemna
>
> Customer has added a vpn access to local lan to get to iSeries.
> Remote pc can log into vpn (Cisco client), and even ping the dsl
> router's inside address 10.10.10.11
> Cannot ping iSeries 10.10.10.10 or any other 10.x.x.x device.
> iSeries has a *dftroute route to the 10.10.10.11 dsl router and can
> ping it. I'm no network expert, but had someone else attempt
> vpn and he says dsl router is natting user a 172.x.x.x address.
> Is this the problem? We had asked the nat pool to be to 10.10.10.70
thru
> 90,
> but Bellsouth tech gets quiet when i say "nat pool".
> btw-There is a separate router/firewall for T1 into same lan switch.
> jim
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