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CHAPTER 4
Location-Based IP Address Pools
Location-Based IP Address Pools Overview
Copyright © 2010, Juniper Networks, Inc.
This chapter includes the following topics:
Location-Based IP Address Pools Overview on page 25
Configuring Location-Based IP Address Pools on page 26
Example: Configuring a Location-Based IP Address Pool on page 26
Verifying and Managing Location-Based IP Address Pools on page 27
The LN1000 router is a full-featured Juniper Networks router running Junos OS with eight
gigabit Ethernet interfaces that exists on a single module. It operates in a network device
(such as a shelf) that contains multiple locations (slots). Each location supports eight
gigabit Ethernet interfaces. These locations can be populated with multiple cards. Each
card within this shelf is a separate entity (for example, a router or access device) in the
internal network of the shelf.
The management system for the shelf downloads a separate configuration to each card
when they are initialized. To enable this download, you must first configure an IP interface
on each card with an IP address and subnet mask that are predefined for each location
in the shelf.
You can use the Junos location-based IP address pools feature to configure the initial IP
interface of the LN1000 router. The configuration is preserved when the shelf management
system downloads a separate configuration to this interface, unless it is explicitly
overwritten using existing CLI configuration commands (such as
move an LN1000 router to a different slot within the shelf, initialization restarts, in which
case you might have to reconfigure the initial IP interface with the IP address and subnet
mask specified for the new location. The shelf management system can then download
a new configuration to the new interface.
A location pool can specify IP addresses and subnet masks for multiple locations (relative
positions of cards within a shelf). You can configure an IP interface to obtain an IP address
and subnet mask from a selected location pool instead of specifying an explicit IP address
and subnet mask.
You can configure a maximum of 10 location-based IP address pools, each with a unique
name. A pool can contain a maximum of 32 IP addresses. A pool entry contains a location
load override
). If you
25
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