Juniper JUNOSE 11.1.X - LINK LAYER CONFIGURATION 4-7-2010 Configuration Manual page 573

ipv6 virtual-router
ppp authentication
Use to set up an unnumbered interface.
An unnumbered interface does not have an IPv6 address assigned to it.
Unnumbered interfaces are often used in point-to-point connections where an
IPv6 address is not required.
This command enables IPv6 processing on an interface without your having to
assign an explicit IPv6 address to the interface.
You supply an interface location that is the type and number of another interface
on which the router has an assigned IPv6 address. This interface cannot be
another unnumbered interface.
Example
host1(config-if)#ipv6 unnumbered loopback 0
Use the no version to disable IPv6 processing on an interface.
See ipv6 unnumbered
Use to assign a virtual router to a profile.
You can configure a virtual router using RADIUS instead of adding one to the
profile by using the ipv6 virtual-router command. For more information about
how to configure a virtual router using RADIUS, see Configuring RADIUS Attributes
in the JUNOSe Broadband Access Configuration Guide.
Example
host1(config-profile)#ipv6 virtual-router VR6
Use the no version to remove the virtual router assignment.
See ipv6 virtual-router
Use to request authentication from a PPP peer and set the authentication method.
The router supports the MD5 authentication algorithm for CHAP authentication.
Example 1 Specifies the order of preference for the primary authentication
protocol
host1(config-if)#ppp authentication pap chap eap
The router requests the use of PAP as the authentication protocol (because it
appears first in the command line). If the peer refuses to use PAP, the router
requests the CHAP protocol. If the peer refuses to use CHAP, the router requests
the EAP protocol. If the peer refuses to negotiate authentication, the router
terminates the PPP session.
Example 2 Configures EAP or CHAP or PAP on a dynamic PPP interface
host1(config)#profile ppptest
host1(config-profile)#ppp authentication eap chap pap
Configuring PPPoE Dynamic Interfaces over PPPoE Static Interfaces
Chapter 17: Configuring Dynamic Interfaces
541