
Chapter 4 User Notes 77
Nortel Business Secure Router 252 Configuration — Basics
Scenario 2: A BCM50 in each site, each acting as the backup call
server for the other site
1 At each site,
a Ensure that the DHCP Server in the BCM50 is disabled, that the BCM50
is connected to the router, and both have booted.
b Add the IP phones to the site as per BCM50 installation guide.
c At each router, change the S2 address to the IP address of the remote
BCM50, using TELNET or SSH, and the CLI command,
ip dhcp enif0 server voipserver 2 <Remote_BCM50_IP_Address> 7000 1
2 Create a tunnel between the sites, as described above.
3 Create an H.323 trunk between the BCM50s, as per the BCM50 User Guide.
Configuring the router to act as a Nortel VPN Server (Client
Termination)
1 Under VPN / Client Termination,
a Enable Client Termination.
b Select authentication type and the encryption algorithms supported.
c If the clients are assigned IP addresses from a pool, define the pool, and
enable it.
2 Assuming a Local User Database is used for authentication,
a Add user name and password to the local user database as an IPSec user,
and activate it. If the hosts will be assigned a static IP address, enter the
address that will be assigned to the user.
Configuring the router to connect to a Nortel VPN Server (Client
Emulation)
1 Go to VPN / Summary, and select 'Edit'.
2 Select a connection type of Contivity Client, and fill in the web page with the
relevant data.
3 If Group authentication or On-Demand Client Tunnels are needed, click the
'Advanced' button to configure this.
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