ADTRAN Express L1.5, User Manual

Page: 74 / 145

Chapter 3: Terminal Menu Operation and Structure
58 Express L768/L1.5 User Manual 61202192L1-1
PPP Profile/IP
The IP menu contains the parameters for exchanging IP data with the PPP
peer.
IP/Mode
Write security: 3; Read security: 5
Setting to
On (def) will permit this connection profile to negotiate PPP IPCP
with the PPP peer for exchanging of IP packets.
IP/NAT
Write security: 3; Read security: 5
The Express L768/L1.5 can perform Network Address Translation. This fea-
ture is most widely used when connecting to the Internet. The Ethernet net-
work can consist of private network numbers. When this profile is connected,
all IP addresses on the Ethernet side are translated into the one real IP address
negotiated with the PPP peer (ISP). Multiple stations on the Ethernet side can
access the Internet simultaneously. See the section IP/NAT on page 29 for
more global options. Setting this option to
On will cause the Express L768/
L1.5 to perform NAT. In the Off (def) position, the unit will route across the
connection normally.
IP/Route
The IP parameters are configured in this menu. Usually the Express L768/L1.5
will automatically discover the PPP peer’s networks using PPP IPCP and/or RIP.
Route/IP/Net
Write security: 3; Read security: 5
The PPP peer’s IP address or network can be set here, if known. Leaving this
at 0.0.0.0 means that the Express L768/L1.5 will determine the PPP peer’s IP
and network using the PPP IPCP.
Route/Netmask
Write security: 3; Read security: 5
This network mask is applied to the
IP/NET address for determining the PPP
peer’s network. If left as 0.0.0.0, a standard network mask is used.