Ia_Na Option - Juniper EX3400 Features Manual

DHCP and Other System Services Feature Guide for EX2300, EX3400, and EX4300 Switches
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Assign a Specific IP Address to a Client Using DHCP Option 50 and DHCPv6 IA_NA
Option
128
[edit system services dhcp-local-server]
user@host# edit overrides
For DHCP relay agent:
[edit forwarding-options dhcp-relay]
user@host# edit overrides
Enable auto logout and specify the secondary identification method you want to use
2.
when the primary identification method is unsuccessful.
For example, to configure DHCP local server to use the incoming interface method:
[edit system services dhcp-local-server overrides]
user@host# set client-discover-match
For example, to configure DHCP relay agent to use the option 60 and option 82
method:
[edit forwarding-options dhcp-relay overrides]
user@host# set client-discover-match option60-and-option82
NOTE: If you change the auto logout configuration, existing clients continue
to use the auto logout setting that was configured when they logged in. New
clients use the new setting.
DHCP Auto Logout Overview on page 124
How DHCP Relay Agent Uses Option 82 for Auto Logout on page 126
Allowing Only One DHCP Client Per Interface
Deleting DHCP Local Server and DHCP Relay Override Settings on page 30
Extended DHCP Local Server Overview on page 22
Extended DHCP Relay Agent Overview on page 46
Subscriber management or DHCP management enables you to specify that DHCP local
server assign a particular address to a client. For example, if a client is disconnected, you
might use this capability to assign the same address that the client was using prior to
being disconnected. If the requested address is available, DHCP assigns it to the client.
If the address is unavailable, the DHCP local server offers another address, based on the
address allocation process.
Both DHCP local server and DHCPv6 local server support the specific address request
feature. DHCP local server uses DHCP option 50 in DHCP DISCOVER messages to request
a particular address, while DHCPv6 local server uses the IA_NA option (Identity Association
for Non-Temporary Addresses) in DHCPv6 SOLICIT messages.
incoming-interface
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