Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - BROADBAND ACCESS CONFIGURATION GUIDE 2010-10-12 Configuration Manual page 660

JunosE 11.3.x Broadband Access Configuration Guide
ip address
ip auto-configure ip-subscriber
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SRP module responds only to traffic destined to the 1.1.1.1 subnet and
discards traffic to all other host IP addresses within that subnet (1.1.1.1/16),
if no specific or longer route entry is found or if the SRP module receives
too much traffic from subnets other than 1.1.1.1, the CPU utilization on the
SRP module reaches the saturation level.
If you use a subnet mask other than a /32 mask for the IP address configured
on the loopback interface, traffic from the entire subnet is routed to the
loopback interface. Therefore, that subnet cannot be routed through any
other interface on the router, unless a more specific route points to another
interface.
Example
host1(config)#interface loopback 10
host1(config-if)#ip address 10.20.32.1 255.255.255.255
Use the no version to delete the loopback interface.
See interface loopback
Use to set an IP address for an interface or a subinterface.
Specify the layer 2 encapsulation before you set the IP address.
Issuing this command creates the primary IP interface. You must create a primary IP
interface on which to enable dynamic creation of subscriber interfaces.
Example
host1(config-subif)#ip address 192.168.2.50 255.255.255.0
Use the no version to remove the IP address or to disable IP processing.
See ip address
Use to configure an IP interface to support creation of dynamic subscriber interfaces.
The specified IP interface is considered the primary interface.
The router creates the required dynamic subscriber interfaces when the IP address is
assigned to the associated subscriber. The address might be assigned by an external
DHCP server, the DHCP local server, or the packet detect feature.
Use the include-primary keyword to specify that the primary interface can be assigned
to a subscriber. Use the exclude-primary keyword to specify that the primary interface
is not used for subscribers. The primary interface is not assigned to a subscriber by
default.
You can issue this command from Interface Configuration mode, Subinterface
Configuration mode, or Profile Configuration mode.
Example
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