T1 AND E1 REMOTE ACCESS CONCENTRATORS
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6.3.2 CSM C
ONFIGURATION FOR
S
TANDARD
IP (CSM O
NLY
)
This section describes configuring the Connection Services Manager (CSM) software for the example NAT
application shown earlier in
Section 6.3
. This would include:
• Defining the Concentrator as an access server and establish authentication parameters.
• Identifying the remote PC as a remote device and providing its authentication parameters and IP address.
• Identifying the remote router as a remote device and providing its authentication parameters, IP address,
and phone number.
(If we were using RADIUS rather than CSM, the values we would need to set would be the same, but the
procedures would be different—consult the RADIUS documentation.)
Here’s what the procedure would be for our hypothetical network. To begin, we’d start up the CSM
Connection Manager and make a connection (File/Connect). Then we’d proceed with the following steps:
1. From Configure on the CSM Connection Manager menu bar, select Access Servers.
2. Click Add to configure CSM for the Concentrator. This will place you in the Properties window:
a. Under Name, enter “Conc_LRA3”.
b. Provide the Concentrator’s IP address (2.2.2.1).
c. In the Access Server Type field, select “LRA3000”.
d. Provide authentication information: the CSM Secret (“CSM_sec”) and System Secret (“LRA3_sec”).
These values correspond to the values we already entered on the Concentrator (see
Section 6.1.1
).
3. Select the Demand Access tab. Skip the IP Pool section, because we’re assigning specific IP addresses
to remote devices. Instead, provide channel information. In order to support the call-out feature, we
must specify the total number of ISDN channels available. On the Concentrator, this value is “23”.
4. Click Add.
5. From Configure on the menu bar, select Devices.
6. Click Add to add the remote router (“Router2”).
7. Under the Address tab, specify the device name of “Router2”.
8. Under the Protocols tab:
a. Enable IP;
b. Because this is an unnumbered interface, provide Router2’s IP address as 0.0.0.0.
9. Click Add.
10. Continue with IP Protocols configuration:
a. Click “Add Static Route”.
b. Provide the Destination Subnet of the Concentrator (1.0.0.0). The system calculates the subnet mask,
which is 255.0.0.0.
c. Provide the Metric value. This value corresponds to the number of routers we use to make this
connection. In our example, this number is 2.
