11-42 MAX 6000/3000 Network Configuration Guide
Setting Up Virtual Private Networks
Configuring L2TP tunnels for dial-in clients
How the system name is selected
If tunnel authentication is enabled, when the MAX unit requests a new tunnel, it looks for a
system name to send to the LNS as follows:
1If available, use the Client ID specified in the callers Connection profile. If no Client ID
value is specified in the Connection profile, go on to the next alternative.
2If available, use the Client ID value specified in the Tunnel Options profile for the LNS. If
no Client ID value is specified in a Tunnel Options profile, go on to the next alternative.
3If available, use the L2TP-System-Name value specified in the L2-Tunnel-Global profile.
If no L2TP-System-Name value is specified in that profile, go on to the next alternative.
4If available, use the Name value specified in the units System profile. If no Name v alue is
not specified in that profile, go on to the next alternative.
5Send the string noname.
Example of how Client ID settings create parallel tunnels
In this example, the LNS systems DNS hostname is a.example.com (a fully qualified
domain name), which resolves to two IP addresses, 1.1.1.1 and 1.1.1.2. The hostname
b.example.net also resolves to the 1.1.1.1 address. Table 11-4 shows existing tunnels to
the LNS, which were authenticated with different Client ID strings.
Table11-4.Existing tunnels to the same LNS
Address Client ID Pri. Tunnel Server Tunnel-ID

1.1.1.1 a1 a.example.com 102

1.1.1.1 a2 a.example.com 103