Juniper JUNOS 10.1 - CONFIGURATION GUIDE 1-2010 Configuration Manual page 266

JUNOS 10.1 Network Interfaces Configuration Guide
Example: Configuring an Unnumbered Ethernet Interface
In this example,
interface from which
Example: Configuring the Preferred Source Address for an Unnumbered
Ethernet Interface
In this example, loopback interface
Ethernet interface
one of the loopback interface s secondary addresses, 3.3.3.1, as the preferred source
address for the unnumbered Ethernet interface.
196
Configuring an Unnumbered Interface
ge-1/0/0 is the unnumbered interface and
ge-1/0/0
interfaces {
ge-0/0/0 {
unit 0 {
family inet {
address 4.4.4.1/24;
}
}
}
ge-1/0/0 {
unit 0 {
family inet {
unnumbered-address ge-0/0/0.0;
}
}
}
}
"borrows" an IP address. The example also configures
ge-4/0/0
interfaces {
lo0 {
unit 0 {
family inet {
address 2.2.2.1/32;
address 3.3.3.1/32;
}
}
}
}
interfaces {
ge-4/0/0 {
unit 0 {
family inet {
unnumbered-address lo0.0 preferred-source-address 3.3.3.1;
}
}
}
}
"borrows" an IP address.
lo0 is the donor interface from which unnumbered
ge-0/0/0 is the donor