Alternative Configuration - Juniper JUNOSE 11.1.X - LINK LAYER CONFIGURATION 4-7-2010 Configuration Manual

JUNOSe 11.1.x Link Layer Configuration Guide

Alternative Configuration

In previous releases, you could configure a PPPoE major interface directly over ATM
1483 only. The router still supports this stacking and configuration method for PPPoE.
Although the older and newer interface stacks are different, they behave the same
in terms of frame encapsulation and handling. As a result, an interface created using
the older stacking will interoperate with an interface using the new stacking. Note,
however, that the previous command syntax (encapsulation pppoe) cannot be used
when a bridged Ethernet interface already exists, because it is intended to produce
the old stacking for PPPoE over ATM 1483.
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Configuring Bridged Ethernet
Use to create a PPPoE subinterface on an ATM interface.
On ERX7xx models, ERX14xx models, and the ERX310 router, use the
slot/port.atmSubinterface.pppoeSubinterface format.
On the E120 and E320 routers, use the
slot/adapter/port.atmSubinterface.pppoeSubinterface format. RLI-1050
Examples
host1(config)#pppoe subinterface atm 9/1.1.1
host1(config)#pppoe subinterface atm 5/0/1.1.1
Use the no version to remove the PPPoE subinterface.
See pppoe subinterface.
Create the ATM 1483 subinterface and associated PVC:
host1(config)#interface atm 9/1.1 point-to-point
host1(config-subif)#atm pvc 1 0 32 aal5snap 0 0 0
Create a PPPoE major interface over the ATM 1483 subinterface. Note that since
this command uses the encapsulation keyword, it will fail if a bridged Ethernet
interface was already created over the ATM 1483 subinterface using the new
syntax.
host1(config-subif)#encapsulation pppoe
Create a PPPoE subinterface over the major interface. Because PPPoE is the only
top layer protocol in the stack, there is no need to use pppoe to identify the
subinterface type (it is implied).
host1(config)#interface atm 9/1.1.1
Configure the PPP encapsulation over the PPPoE subinterface, and the IP interface
over the PPP interface.
host1(config-subif)#encapsulation ppp
host1(config-subif)#ip address 160.1.1.1 255.255.255.0