Juniper ACX2000 Configuration Guide

dhcp-relay group sapphire interface ge-1/0/0.25 upto ge-1/0/0.35
•
Two ranges cannot overlap, either within a group or across groups. Overlapping occurs
when two interface ranges share common subunit space but neither range is a proper
subset of the other. The following ranges overlap:
interface ge-1/0/0.10 upto ge-1/0/0.30
interface ge-1/0/0.20 upto ge-1/0/0.40
•
A range can contain multiple nested ranges. A nested range is a proper subset of
another range. When ranges are nested, the smallest matching range applies.
In the following example, the three ranges nest properly:
interface ge-1/0/0.10 upto ge-1/0/0.30
interface ge-1/0/0.12 upto ge-1/0/0.15 exclude
interface ge-1/0/0.25 upto ge-1/0/0.29 exclude
•
Discrete interfaces take precedence over ranges. In the following example, interface
ge-1/0/0.20 takes precedence and enforces an interface client limit of 5.
interface ge-1/0/0.10 upto ge-1/0/0.30
interface ge-1/0/0.15 upto ge-1/0/0.25 exclude
interface ge-1/0/0.20 overrides interface-client-limit 5
Related
Documentation
Extended DHCP Local Server Overview on page 315•
• Address-Assignment Pools Overview on page 317
• Grouping Interfaces with Common DHCP Configurations on page 326
• Guidelines for Configuring Interface Ranges on page 327
Group-Specific DHCP Local Server Options
You can include the interface and overrides statements at the [edit system services
dhcp-local-server group group-name] hierarchy level to set group-specific DHCP local
server configuration options, and at the [edit system services dhcp-local-server] hierarchy
level to set global DHCP local server configuration options. Statements configured at
the [edit system services dhcp-local-server group group-name] hierarchy level apply only
to the named group of interfaces, and override any global DHCP local server settings
configured with the same statements at the [edit system services dhcp-local-server]
hierarchy level.
In a routing instance, include the interface and overrides statement at the [edit
routing-instances <routing-instance-name> system services dhcp-local-server group
group-name] hierarchy level.
•
interface—Specify one or more interfaces, or a range of interfaces, that are within the
specified group.
•
overrides—Override the default configuration settings for the extended DHCP local
server. For information, see Overriding Default DHCP Local Server Configuration Settings.
Copyright © 2017, Juniper Networks, Inc.328
ACX Series Universal Access Router Configuration Guide

Juniper ACX2000 Specifications

General

Brand	Juniper
Model	ACX2000
Category	Network Router
Language	English