IBM SC30-3681-08 manual Multi-Chassis MP, Conguring a Multilink PPP Interface

	Using MP
Multi-Chassis MP
An MP bundle with a Layer 2 Tunnel that contains a phone hunt group that spans
multiple physical Network Access Servers is known as a multi-chassis MP.
Multi-chassis MP uses rhelm or user-based tunneling (see ªUsing Local or Remote
Authenticationº in Using and Con®guring Features) to establish the MP endpoint
destination. See ªUsing Layer 2 Tunneling Protocol (L2TP)º inUsing and
Con®guring Featuresfor more information about L2TP.
Con®guring a Multilink PPP Interface
Con®guring an MP interface depends on the type of interface used in the MP
bundle. The following sections contain examples of the various con®gurations.
After con®guring the MP interface, you may con®gure bandwidth-on-demand (BOD).
The following example con®gures BOD on existing MP interface 17:
Config> net 17
MP config:	17> enable bod
Enable BAP? [N]
MP config:	17> set bandwidth-on-demand parameters
Add bandwidth % [90]:
Drop bandwidth % [70]:
Bandwidth test interval (sec) [15]
MP config:	17>
Con®guring MP on PPP Dial Circuits
This section shows how to con®gure a Multilink PPP interface by using an example
that con®gures Multilink PPP with two ISDN dial circuits.
1. Add the two dial circuits and the multilink PPP interface.
*t 6
Config>add dev dial-circuit
Adding device as interface 7
Defaulting Data-link protocol to PPP
Use "net 7" command to configure circuit parameters
Config>add dev dial-circuit
Adding device as interface 8
Defaulting Data-link protocol to PPP
Use "net 8" command to configure circuit parameters
Config>add dev multilink-ppp
Enter the number of multilink PPP interfaces [1]?
Adding device as interface 9
Defaulting Data-link protocol to PPP
Use "net intf" command to configure circuit parameters
Config>

2.Con®gure each PPP dial circuit. (See ªChapter 47. Con®guring and Monitoring Dial Circuitsº on page 643.) In this example, the destination, call direction, and LIDs are set for one of the dial circuits.

Config>net 7

Circuit configuration

Circuit config:	7>set dest out
Circuit config:	7>set calls outbound
Circuit config:	7>set net 6
Circuit config:	7>

3. Enable MP on each dial circuit to be used for MP as follows:

Circuit config: 7>encapsulator

Point-to-Point user configuration

PPP 7 Config>enable mp

Chapter 34. Using the Multilink PPP Protocol 511