Configuration Example; Contextual Command Differences - Juniper JUNOSE 11.1.X - LINK LAYER CONFIGURATION 4-7-2010 Configuration Manual

JUNOSe 11.1.x Link Layer Configuration Guide

Configuration Example

The following commands configure three T1 lines and aggregate them into a multilink
bundle named group1.

Contextual Command Differences

The MLPPP configuration commands have different effects depending on the interface
context. If you issue an MLPPP configuration command in the context of an individual
interface, the command affects only the MLPPP link interface associated with that
individual interface.
For example, the following commands disable negotiation of the local magic number
only for serial interface 2/0:1/1.
If you issue an MLPPP configuration command in the context of an MLPPP
bundle the MLPPP network interface the command affects all the member links
of the bundle. This feature prevents you from having to issue MLPPP configuration
commands for each member link interface.
For example, the following commands disable negotiation of the local magic number
for the entire bundle, group1.
Any member links added to the bundle after issuing an MLPPP configuration
command are not affected by the command. For example, if you add serial interface
2/0:4/1 to the group1 bundle after you issue the ppp magic-number disable
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Configuring Static MLPPP
host1(config)#interface serial 2/0:1/1
host1(config-if)#encapsulation mlppp
host1(config-if)#exit
host1(config)#interface serial 2/0:2/1
host1(config-if)#encapsulation mlppp
host1(config-if)#exit
host1(config)#interface serial 2/0:3/1
host1(config-if)#encapsulation mlppp
host1(config-if)#ppp keepalive 50
host1(config-if)#exit
host1(config)#interface mlppp group1
host1(config-if)#member-interface serial 2/0:1/1
host1(config-if)#member-interface serial 2/0:2/1
host1(config-if)#member-interface serial 2/0:3/1
host1(config-if)#ppp authentication pap chap
host1(config-if)#ppp hash-link-selection
host1(config-if)#ip address 10.10.100.1 255.255.255.0
host1(config-if)#member-interface serial 2/0:1/1
host1(config-if)#encapsulation mlppp
host1(config-if)#ppp magic-number disable
host1(config)#interface mlppp group1
host1(config-if)#member-interface serial 2/0:1/1
host1(config-if)#ip address 10.10.100.1 255.255.255.0
host1(config-if)#ppp magic-number disable