local servers ignore any DHCP information requests that they receive. You can override
this default behavior to enable processing of these messages. Include the process-inform
statement at the [edit system services dhcp-local-server overrides] hierarchy level.
In a routing instance, include the process-inform statement at the [edit routing-instances
routing-instance-name system services dhcp-local-server overrides] hierarchy level.
The information requested by the clients has typically been configured with the
dhcp-attributes statement for an address pool defined by the address-assignment pool
pool-name statement at the [edit access] hierarchy level.
When you enable processing of DHCP information requests, you can optionally specify
the name of the pool from which the local server retrieves the requested configuration
information for the client.
DHCP local server responds to the client with a DHCP acknowledgment message that
includes the requested information—if it is available. No subscriber management is
applied as a result of the DHCP information request message.
Related
Documentation
Extended DHCP Local Server Overview on page 315•
• DHCP Duplicate Client Differentiation Using Client Subinterface Overview on page 362
• Address-Assignment Pools Overview on page 317
• DHCP Auto Logout Overview on page 333
• Guidelines for Configuring Support for DHCP Duplicate Clients on page 363
• Understanding DHCP Client Operation on page 359
• Enabling Processing of Client Information Requests on page 336
Enabling Processing of Client Information Requests
By default, DHCP local server do not respond to information request messages from the
client. You can enable DHCP local server to process these messages and respond to
them with an acknowledgment (ack or reply message, respectively) and the requested
information.
Configure one or more local address pools. See “Configuring an Address-Assignment
Pool Name and Addresses” on page 319. For processing information request messages,
the address configuration is not necessary. For DHCP local server, you must specify the
IPv4 family.
See “Configuring DHCP Client-Specific Attributes” on page 325 for details about how to
configure the information sought by clients that send information request messages.
To enable processing of DHCP client information request messages:
1. Specify that you want to configure override options.
[edit system services dhcp-local-server overrides]
user@host# set process-inform
Copyright © 2017, Juniper Networks, Inc.336
ACX Series Universal Access Router Configuration Guide
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