T1 AND E1 REMOTE ACCESS CONCENTRATORS
90
Perhaps this is what the Configuration Worksheet for our example network looks like:
Configuration Option
Setting
IP address for Concentrator
2.2.2.1
Phone number for Concentrator
(555) 555-1234
RADIUS or CSM on same subnet
as Concentrator?
Yes
Authentication:
CSM secret
CSM_sec
Concentrator name
Conc_LRA3
Concentrator secret
LRA3_sec
Concentrator password
LRA3_pw
IP-address pool name
LRA3_ip_pool
Range of IP addresses in pool
2.2.2.11 through 2.2.2.25
Switch type
5ESS
Line Build Out
–15.0 dB
Remote Device Name
Router2_nat
Secret/password for Device
secreta
Phone Number for Device
N/A
This example requires proper setup of:
• The Concentrator (see
Section 6.2.1
),
• CSM (see
Section 6.2.2
), and
• The IP Router (“Router2_nat”; see
Section 6.2.3
).
Standard PAP/CHAP/CLID authentication options are supported. The remote router (“Router2_nat”)
will use an IP address pool to obtain an IP address for its connection. The remote end stations will have “local”
IP addresses (on the subnet) assigned by Router2’s DHCP server. The Concentrator will not be configured to
call out.
The Concentrator will use a switch type different than the default; it will be configured to use a 5ESS. In
addition, the telephone company provided a decibel attenuation value of -15.0 dB when they installed the lines.
This is different than the default Line Build Out value of 0.0 dB, so you will need to adjust this value as well.
These adjustment will require Network Tools commands to be entered.
