Riverstone Networks WICT1-12 - Manual (Page 615)

Riverstone Networks RS Switch Router User Guide Release 8.0 30-11
WAN Configuration Configuring PPP Interfaces
• Finally, when the network-layer protocols have been configured, both the host and remote peer can
send packets to one another using any and all of the configured network-layer protocols.
The link will remain active until explicit LCP or NCP frames instruct the host and/or the peer router to close the link,
or until some external event (i.e., user interruption or system time-out) takes place.
You can set up PPP ports on your RS with the commands described in the Riverstone RS Switch Router Command Line
Interface Reference Manual.
30.7.1 Use of LCP Magic Numbers
LCP magic numbers enable you to detect situations where PPP LCP packets are looped back from the remote system,
resulting in an error message. The use of LCP magic numbers is enabled on the RS by default. However, should you
employ a service profile in which the use of LCP magic numbers has been disabled, undetected “loopback” behavior
may become a problem.
Note In the event that a PPP WAN interface remains unrecognized at startup due to
loopback interference, you can use the
ppp restart
command in the CLI to
remedy the situation.
30.8 CONFIGURING PPP INTERFACES
This section provides an overview of configuring a host of WAN parameters and setting up WAN interfaces. When
working in the PPP environment, you must first define the type and location of your WAN interfaces. Having
established the type and location of your WAN interfaces, you need to (optionally) define one or more service profiles
for your WAN interfaces, then apply a service profile to the desired interface(s). Examples of this process are displayed
in "PPP Port Configuration".
30.8.1 Defining the Type and Location of a PPP Interface
To configure a PPP WAN port, you need to first define the type and location of one or more PPP WAN ports on your
RS. The following command line displays a simplified example of a PPP WAN port definition:
If the port is an HSSI port that will be connected to a HSSI port on another router, you can specify
clock
<clock-source> in the definition.
30.8.2 Setting up a PPP Service Profile
Once you have defined the type and location of your PPP WAN interface(s), you can configure your RS to more
efficiently utilize available bandwidth for PPP communications.
Define the type and location of a PPP WAN port.
port set
<port>
wan-encapsulation ppp speed
<number>