Re: static routing

That is puzzling. You said that the connection was up and stable. Was that
running through this same router?

If you are using PPTP, failure to connect through a router is usually
caused by the router blocking GRE (Generic Routing Protocol) which is IP
protocol 47. This usually causes a 721 error. Have you tried connecting from
the branch end? Don't forget that the username must match the name of the
demand-dial inerface on the answering router.

"Robert" <user@xxxxxxx> wrote in message
news:eIpz69lvHHA.3500@xxxxxxxxxxxxxxxxxxxxxxx
OK, I am creating a deman dial interface on the corporate server and
connects to the branch office server. This way, I will have a demand dial
connection going from each end, with appropriate static routes. My only
problem is, I knew this was going to happen, the router that I use at the
remote office is a Linksys router that used to be used my a phone company
(kind of link Vonage, but someone else). Of course, the voip function no
longer works, but its still a decent router. What I noticed when I had it
at the corporate office for a little while, is when someone from outside
tries to establish a VPN connection to the server on the inside, the users
connection just hangs at "Verifying Username and Password", then
eventually times out. I think my only options are to either buy a new
router or connect the remote office's cable modem directly to the server.
Not really wanting to do the second option, and would prefer not to spend
the money on a new router at the moment. Any ideas to get around this?

Robert

"Bill Grant" <not.available@online> wrote in message
news:e1ynsXgvHHA.1208@xxxxxxxxxxxxxxxxxxxxxxx
I wasn't talking about the remote branch router. I was talking about
the corporate router. Both routers must have a demand-dial interface and
a corresponding static route. If the branch office makes a connection
without connecting to a demand-dial interface, routing will not work.
Instead of connecting as a router it connects as a simple remote access
client. Instead of a subnet route, you just get a host route back to the
client. So the server can route to the corporate LAN but machines behind
it cannot.

"Robert" <user@xxxxxxx> wrote in message
news:ebhUQHfvHHA.1168@xxxxxxxxxxxxxxxxxxxxxxx
Ok, thats already been done on the remote branch side. On the remote
branch server, the deman dial connection is already made and is
connected 24/7. A static route has been added that matches the subnet
of the corporate network. My problem is, users on the remote branch
office network can't access the corporate network (ie; use the tunnel
that has been made), but the server that has made the connection can.
There is a missing link there. The server that made the connection can
use the tunnel, but the users on the same network of this server can't?
The users on this network (were talking about the remote site here) use
RRAS (same server and software that has established the tunnel) to
access the internet. There is something I missed.

Robert

"Bill Grant" <not.available@online> wrote in message
news:OxvVI%23dvHHA.1340@xxxxxxxxxxxxxxxxxxxxxxx
You can't do it manually because the interface doesn't exist until
the connection is made.Is this server running RRAS? If so, you
configure a demand dial interface. You then use the static route wizard
to configure a static route for the subnet of the remote site and
select the demand dial interface from the dropdown list as the
interface.

When you make a connction to the server you use the name of the
demand-dial interface as the username. RRAS then connects you to the
correct interface for the calling site (so that you get the correct
subnet for the site. Multiple sites can connect using different dd
interfaces and creating different tunnels.) When the dd interface
becomes active, RRAS adds the static route (which has been stored in
the registry) to the routing table.

"Robert" <user@xxxxxxx> wrote in message
news:e2WKlJZvHHA.3356@xxxxxxxxxxxxxxxxxxxxxxx
OK, I understand, for the most part. On the corporate server, what do
I put in for the gateway on the static route? Here is what I have so
far:

Static Route:
Interface (Local Area Connection 2) --this is the only interface
available on the corporate server
Destination: 192.168.17.0
Subnet: 255.255.255.0
Gateway: ?????

Robert

"Bill Grant" <not.available@online> wrote in message
news:OM%23JB7TvHHA.4796@xxxxxxxxxxxxxxxxxxxxxxx
The reson it doesn't work is, as I said previously, routing is a
two-way process. A static route will get the traffic from one site to
the other, but what happens to the traffic in the other direction?

As an example, assume that a workstation in one site tries to ping
a workstsation at the other site. The packet goes to the default
router which has a static route pointing to the "other" site via the
point to point link. Everything is fine. What happens when the target
machine tries to reply? As before, the packet goes to the default
router for that site. This router does not have a route for the
private IP subnet of the first site. It tries to send a reply using
its default route (which is probably out to the Internet). The packet
is discarded because private IPs cannot cross the Internet.

Routing between sites will only work if each router has a static
route for the subnet of the "other" site via the point to point
connection. In this case, the privately addressed packet is encrypted
and encapsulated before it is sent out to the Internet. (That is, the
private traffic between the two private subnets is tunnelled through
the public Internet). The traffic in both directions must use the
tunnel.

"Robert" <user@xxxxxxx> wrote in message
news:%23Mfg8oRvHHA.2068@xxxxxxxxxxxxxxxxxxxxxxx
OK, so if I understand you, I need to create a demand dial
connection on both sides and connect them? I still don't understand
how the lan users on the side that already has the dd connection
made can't access the network, but the machine that made the
connection can.

Robert

"Bill Grant" <not.available@online> wrote in message
news:uJAe2yPvHHA.3356@xxxxxxxxxxxxxxxxxxxxxxx
To get routing working between the two sites you will need to
set up a site to site (also called router to router) connection.
Routing is a two-way process. You must have routes on the routers
at both ends to be able to get from a host in on site to a host in
the other.

To do it using RRAS routers you need one in each site. The
connection is made between the routers. Each router has a static
route to the other site linked to a demand dial interface. The
"calling" router connects to the dd interface on the answering
router. The static route thehn become effective, routing traffic
through the link.

"Robert" <user@xxxxxxx> wrote in message
news:ue3m2aPvHHA.3356@xxxxxxxxxxxxxxxxxxxxxxx
Yes, your right. Here is the setup:

Branch Office
Server "WAN"
IP: 192.168.16.11
Subnet: 255.255.255.0
Gateway: 192.168.16.1

Server "LAN"
IP: 192.168.17.2
Subnet: 255.255.255.0
Gateway: "None"

Client IP Setup:
IP: 192.168.17.25
Subnet: 255.255.255.0
Gateway: 192.168.17.2

I used static ip addressing on the clients to make it easier. The
clients can connect to the internet just fine, but can't browse
the remote network. The server already has the demand dial
interface connected and I can browse the remote network from the
server, but not from the clients. I can also browse the branch
office server from the corporate office network (clients or
servers). Hope this helps.

Robert

"DanJ" <DanJ@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:86B7F4B6-6171-4EC1-97F6-77EF1FE487E7@xxxxxxxxxxxxxxxx
Hi,

Am I right in assuming that the Branch office server itself has
the demand
dial interface?
Also, if that is the case, I assume the client PCs have their
default
gateway set to the LAN IP Address of the Branch Office Server...
is that the
case?

It may be worth doing a Tracert to ensure that the Client PCs are
going the
correct route.

The Static route needs to specify the Demand Dial Interface as
the
'Interface' for the Static Route. Specify destination IP Address
and Subnet
Mask for the remote network.

If you can provide a little more info, I may be able to help
more, sorry
this response is slightly vague.

Dan
MCSA MCSE 2000/2003



"Robert" wrote:

I have a branch office of which I am setup a demand dial
interfact for the
network to the corporate office. I can browse resources on the
coporate
network from the branch server, but users on the branch lan
cannot. They
can access the internet, but nothing on the corporate web. I
have done a
million different combinations of static routes so the lan users
can access
the corporate network, but nothing seems to be working. Can
anyone help me
out here? I'm at a loss.

Robert























.

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