Juniper JUNOSE SOFTWARE 11.0.X - BROADBAND ACCESS CONFIGURATION GUIDE 4-1-2010 Configuration Manual page 653

3.
4.
5.
6.
interface ip
b. Associate the shared IP interface with the layer 2 interface by using one of
the following methods:
Static
host1:vra(config-if)#ip share-interface fastEthernet 4/1
Dynamic
host1:vra(config-if)#ip share-nexthop 10.1.1.2
c. To fully configure the shared interface, assign an address or make it
unnumbered.
host1:vra(config-if)#ip unnumbered loopback 0
d. Specify the source addresses for the subscriber interface to use to demultiplex
traffic, then exit Interface Configuration mode.
host1:vra(config-if)#ip source-prefix 10.10.3.0 255.255.255.0
host1:vra(config-if)#exit
Create a static route that sends traffic for destination address 10.10.3.0 to
subscriber interface IP1.
host1:vra(config)#ip route 10.10.3.0 255.255.255.0 ip ip1
Repeat Step 2 to configure subscriber interface IP2.
host1(config)#virtual-router vrb
Proceed with new virtual-router creation? [confirm] yes
host1:vrb(config)#interface ip ip2
host1:vrb(config-if)#ip share-interface fastEthernet 4/1
host1:vrb(config-if)#ip unnumbered loopback 0
host1:vrb(config-if)#ip source-prefix 10.10.4.0 255.255.255.0
host1:vrb(config-if)#exit
Create a static route that sends traffic for destination address 10.10.4.0 to
subscriber interface IP2.
host1:vrb(config)#ip route 10.10.4.0 255.255.255.0 ip ip2
Specify that DHCP relay does not install host routes this avoids a conflict that
can causes undesirable ARP behavior.
host1(config)#set dhcp relay inhibit-access-route-creation
For details about the cause of this conflict and the use of the set dhcp relay
inhibit-access-route-creation command to avoid the conflict, see "Configuring
DHCP Relay" on page 489.
Chapter 25: Configuring Subscriber Interfaces
Configuring Static Subscriber Interfaces
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