Related
Documentation
Subscriber Binding Retention During Interface Delete Events on page 337•
• Understanding Dynamic Reconfiguration of Extended DHCP Local Server Clients on
page 341
• Configuring Dynamic Reconfiguration of DHCP Clients to Avoid Extended Outages Due
to Server Configuration Changes on page 344
• Configuring Dynamic Reconfiguration Attempts for DHCP Clients on page 345
• Configuring Deletion of the Client When Dynamic Reconfiguration Fails on page 346
• Requesting DHCP Local Server to Initiate Reconfiguration of Client Bindings on page 347
• Clearing DHCP Bindings for Subscriber Access on page 348
• Verifying and Managing the DHCP Maintain Subscribers Feature on page 339
Verifying and Managing the DHCP Maintain Subscribers Feature
Purpose Display information related to the DHCP maintain-subscribers feature and explicitly log
out maintained clients.
Action To display DHCP local server binding information for the DHCP maintain subscribers
feature:
•
user@host>show dhcp server binding detail
• To explicitly log out a DHCP local server subscriber when the maintain subscriber
feature is enabled:
user@host>clear dhcp server binding binding-type
Related
Documentation
Verifying and Managing DHCP Local Server Configuration on page 349•
Preserving Subscriber Binding Information
When ACX series router functioning as a DHCP local server reboots, by default, all the
subscriber binding information is lost. You can configure ACX series router to preserve
the subscriber binding information to a file in /var/preserve and when the router reboots,
the DHCP local server reads the file and restores the subscriber binding information and
resumes normal packet processing for the subscriber.
The persistent-storage statement under the [edit system services dhcp-local-server]
hierarchy level enables you to store subscriber binding information. The persistent-storage
statement is configured for each routing instance.
The persistent-storage statement under the [edit system processes dhcp-service] hierarchy
level allows you to assign a name for the file. By default, the file is named as
jdhcpd_client_data. The persistent-storage statement under the [edit system processes
dhcp-service] hierarchy level allows you to configure the frequency (between 1 to 48
339Copyright © 2017, Juniper Networks, Inc.
Chapter 10: Configuring DHCP Client and DHCP Server
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