Table 38: ARP Table in Distrusted Environment (continued)
MAC AddressIP Address
MAC XClient 2 IP Address
MAC XClient 3 IP Address
To disable ARP table population:
1. Specify that you want to configure override options.
[edit system services dhcp-local-server]
user@host# edit overrides
2. Disable ARP table population with client-specific information.
[edit system services dhcp-local-server overrides]
user@host# set no-arp
In a routing instance, you can disable ARP table population at the [edit routing-instances
<routing-instance-name> system services dhcp-local-server overrides] hierarchy level.
Related
Documentation
Extended DHCP Local Server Overview on page 315•
• DHCP Local Server Handling of Client Information Request Messages on page 335
• DHCP Duplicate Client Differentiation Using Client Subinterface Overview on page 362
• Address-Assignment Pools Overview on page 317
• Automatically Logging Out DHCP Clients on page 335
• Enabling Processing of Client Information Requests on page 336
DHCP Auto Logout Overview
This topic provides an introduction to the optional Dynamic Host Configuration Protocol
(DHCP) auto logout feature and includes the following sections:
•
Auto Logout Overview on page 333
•
How DHCP Identifies and Releases Clients on page 334
•
Option 60 and Option 82 Requirements on page 334
Auto Logout Overview
Auto logout is an optional configuration for a DHCP local server that improves the
efficiency of DHCP IP address assignment. Auto logout enables IP addresses to be
immediately released and returned to the address pool when the addresses are no longer
used by DHCP clients. DHCP can then assign the addresses to other clients. Without auto
logout, an IP address is blocked for the entire lease period, and DHCP must wait until the
address lease time expires before reusing the address.
333Copyright © 2017, Juniper Networks, Inc.
Chapter 10: Configuring DHCP Client and DHCP Server
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