Juniper IGP - CONFIGURATION GUIDE V11.1.X, Configuration Manual

Page: 59 / 454

1.
Configure a loopback interface, and assign an IP address and mask to the
interface.
host1(config)# interface loopback 0
host1(config-if)# ip address 10.1.1.1 255.255.255.255
host1(config-if)# exit
2.
Configure Fast Ethernet port 4/0 with an unnumbered primary IP interface
associated with the loopback interface configured in Step 1.
host1(config)# interface fastEthernet 4/0
host1(config-if)# ip unnumbered loopback 0
host1(config-if)# exit
3.
Repeat Step 2 for Fast Ethernet port 4/1.
host1(config)# interface fastEthernet 4/1
host1(config-if)# ip unnumbered loopback 0
host1(config-if)# exit
4.
Define probe RTR 10 for Fast Ethernet interface 4/0.
a. Assign an operation number to the RTR probe, and access RTR Configuration
mode. For information, see “Configuring the Probe Type” on page 66.
host1(config)# rtr 10
host1(config-rtr)#
b. Configure the RTR probe as an echo type, and set the IP destination address
and source interface.
You must configure the RTR probe as an echo type to use next-hop
verification. For information, see “Configuring the Probe Type” on page 66.
host1(config-rtr)# type echo protocol ipIcmpEcho 10.1.1.2
source fastEthernet 4/0
c. Specify the interface on which the RTR probe expects to receive responses.
You must set the receive-interface attribute when multiple RTR operations
use the same target address. For information, see “Setting the Receiving
Interface” on page 70.
host1(config-rtr)# receive-interface fastEthernet 4/0
d. (Optional) Configure optional probe characteristics, such as the frequency
and samples-of-history kept. For information, see “Configuring Optional
Characteristics” on page 67.
host1(config-rtr)# frequency 1
host1(config-rtr)# samples-of-history-kept 0
e. Exit RTR Configuration mode.
host1(config-rtr)# exit
IP Routing
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Chapter 1: Configuring IP