Netopia 3346N-ENT User Guide (en)

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5-16  Firmware User Guide
When you define a Connection Profile as using ATMP by selecting ATMP as the datalink encapsulation method, 
and then select Data Link Options, the ATMP Tunnel Options screen appears.
Note:
An ATMP tunnel cannot be assigned a dynamic IP address by the remote ser ver, as in a PPP 
connection. When you define an ATMP tunnel profile, the Local WAN IP Address, assigned in the IP Profile 
Parameters screen, must be the true IP address, not 0.0.0.0, if NAT is enabled.
ATMP Partner IP Address specifies the address of the other end of the tunnel. When unspecified, the 
Router can not initiate tunnels (i.e., act as a foreign agent) for this profile; it can only accept tunnel 
requests as a home agent.
When you specify the ATMP Par tner IP Address, and the address is in the same subnet as the Remote IP 
Address you specified in the IP Profile Parameters, you can specify the route (Tunnel Via Gateway) by which 
the Router par tner is reached. If you do not specify the ATMP Par tner IP Address, the Router will use the 
default gateway to reach the par tner and the Tunnel Via Gateway field is hidden. If the par tner should be 
reached via an alternate por t (i.e., the LAN instead of the WAN), the Tunnel Via Gateway field allows this 
path to be resolved.
You can specify a Network Name. When the tunnel par tner is another Netopia Router, this name may be 
used to match against a Connection Profile. When the par tner is an Ascend gateway in Gateway mode, 
then Network Name is used by the Ascend gateway to match a gateway profile. When the par tner is an 
Ascend gateway in Gateway mode, leave this field blank.
You must specify a Password, used for authenticating the tunnel. 
Note: The Password entr y will be the same for both ends of the tunnel.
For Netopia-to-Netopia connections only, you can specify a Data Encryption algorithm for the ATMP 
connection from the pop-up menu, either DES or None. None is the default.
Note: Ascend does not suppor t DES encr yption for ATMP tunnels.
You must specify a Key String of up to (and including) 20 characters when DES is selected. When 
encr yption is None, this field is invisible.
                             ATMP Tunnel Options
         ATMP Partner IP Address:           173.167.8.134
         Tunnel Via Gateway:                0.0.0.0
         Network Name:                      sam.net
         Password:                          ****
         Data Encryption...                 DES
         Key String:
         Initiate Connections:              Yes
         On Demand:                         Yes
         Idle Timeout (seconds):            300