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The router automatically adds a static route directed to the PPP interface for the
address that is successfully negotiated, allowing data to be routed properly to the
dial-in client. When the IPv6CP connection is ended for any reason, this static route
is subsequently removed. By default, the prefix length for this route is 128
(hostroute).
IPX Control Protocol
IPXCP is specified in RFC 1552. IBM’s implementation does not support any IPXCP
options.
OSI Control Protocol
OSICP is specified in RFC 1377. IBM’s implementation of OSICP does not support
any options.
APPN HPR Control Protocol
Advanced Peer-to-Peer Networking (APPN) High Performance Routing (HPR)
control protocol is specified in RFC 2043. No options are negotiated for this control
protocol.
APPN ISR Control Protocol
Advanced Peer-to-Peer Networking (APPN) Intermediate Session Routing (ISR)
control protocol is specified in RFC 2043. No options are negotiated for this control
protocol.
See “Overview of Encryption” in
Using and Configuring Features
for information
about configuring encryption for a PPP interface.
Using and Configuring Virtual Connections
Virtual Connections (VC) are DIALs dial-in circuits that can be suspended when
they become inactive for a predetermined period of time. The ability to suspend the
connections can help control your networking costs by saving line charges for
DIALs dial-in clients that are not active; instead of keeping the connections active,
the system saves information about the session and then closes the call. When the
same DIALs dial-in client reconnects to the server, the session information is
restored and the connection resumes as if there were no interruption. See
“Configuring a VC” on page 464 for more information.
You can configure DIALs servers to end VCs that have been suspended for a
specified amount of time. You can also manually end a VC at any time. See the set
DIALs command and “DIALs Global Monitoring Commands” in
Using and
Configuring Features
for related commands.
VC Considerations
Keep the following in mind as you configure VCs:
v You can only use AAA local-list or RADIUS authentication when using VCs.
v A VC will not support IPX. When you configure a user to use VCs, IPX support
for that user is disabled.
Using PPP
Chapter 32. Using Point-to-Point Protocol Interfaces 463
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