Dhcp Duplicate Client Differentiation Using Client Subinterface Overview - Juniper ACX1000 Configuration Manual

ACX Series Universal Access Router Configuration Guide
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DHCP Duplicate Client Differentiation Using Client Subinterface Overview

362
user@host> clear dhcp client binding
To clear all DHCP client statistics:
user@host> clear dhcp client statistics
To renew a DHCP client lease time:
user@host> request dhcp client renew interface-name
NOTE: To clear or view information about client bindings and statistics in a
routing instance, run the following commands:
show dhcp client binding routing-instance routing-instance name
show dhcp client statistics routing-instance routing-instance name
clear dhcp client binding routing-instance routing-instance name
clear dhcp client statistics routing-instance routing-instance name
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
Understanding DHCP Client Operation on page 359
Configuring DHCP Duplicate Client Support on page 364
Configuring DHCP Client-Specific Attributes on page 325
Automatically Logging Out DHCP Clients on page 335
Enabling Processing of Client Information Requests on page 336
Tracing General Authentication Service Processes on page 351
Tracing Extended DHCP Operations on page 353
In some network environments, client IDs and MAC addresses might not be unique,
resulting in duplicate clients. For example, two network adapters might be manufactured
with the same hardware address, resulting in a duplicate MAC address among the DHCP
clients attached to the router. A duplicate DHCP client occurs when a client attempts to
get a lease, and that client has the same client ID or the same MAC address as an existing
DHCP client.
When an extended DHCP local server receives a request from a new client that has a
duplicate ID or MAC address, the DHCP server terminates the address lease for the existing
client and returns the address to its original address pool. The DHCP server then assigns
a new address and lease to the new client.
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