Inalp Networks SmartWare Release 2.10, Руководство по настройке программного обеспечения

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PPP Configuration 205
Since the purpose of PPP is providing IP connectivity over different types of link layers, all PPP
configuration elements connect to the IP context through an IP interface. This connection is relayed
via a subscriber profile if either PPP peer requires authentication.
For PPP over Ethernet, a PPPoE Session must be configured on the respective Ethernet port. It is
possible to set-up several (limited by the available memory) PPPoE Sessions on the same Ethernet
port, each session with its own IP interface. In addition to these PPPoE Sessions, pure IP traffic can
run concurrently over the same Ethernet port. This is achieved by binding the Ethernet port directly
to an IP interface.
23.2 PPP Configuration Task List
To configure PPP, perform the following tasks:
• Creating an IP Interface for PPP
• Creating a PPP Subscriber (for authentication)
• Configuring a PPPoE Session
• Configuring a Serial Port for PPP
•
Creating a PPP Interface within the CS Context (not available yet)
•
Creating a PSTN Interface for PPP Dial-In / Dial-Out (not available yet)
• Creating a PPP Profile
• Displaying PPP Configuration Information
• Debugging PPP
23.3 Creating an IP Interface for PPP
An IP interface is required to link a PPP connection to the IP context. The IP interface must apply a
Network Address Port Translation (NAPT), if the PPP service provider only offers a single IP
address and not an IP subnet or if the IP addresses on the LAN shall be private and hidden behind a
public IP address (see Chapter ??? for more information about NAPT).
Procedure
To create an IP interface for PPP
Mode
Context IP
Command Purpose
Step 1 node (ctx-ip)[router]#interface
name
Creates the new interface name , which represents
an IP interface.
Step 2 node (if-ip)[ name ]#point-to-
point
Only defines what route is entered into the IP
routing table:
- point-to-point: A route to the IP address of the
PPP interface (assigned by the PPP peer) is
entered into the routing table.
- no point-to-point: A route to the subnet defined
by IP address of the PPP interface (assigned by
the PPP peer) is entered into the routing table.
The class of the IP address determines the size
of the subset.
Recommendation: Use ‘point-to-point’ and
specify a default route.
Software Configuration Guide Release 2.10, Revision 1.00