Sending Release Messages When Clients Are Deleted; Disabling Automatic Binding Of Stray Dhcp Requests - Juniper ACX1000 Configuration Manual

Sending Release Messages When Clients Are Deleted

Related
Documentation

Disabling Automatic Binding of Stray DHCP Requests

Copyright © 2017, Juniper Networks, Inc.
Deleting DHCP Local Server and DHCP Relay Override Settings
Extended DHCP Local Server Overview
Extended DHCP Relay Agent Overview
By default, when DHCP relay and relay proxy delete a client, they do not send a release
message to the DHCP server. You can override the default behavior and configure DHCP
relay and relay proxy to send a release message whenever they delete a client. The release
message sent by DHCP relay and relay proxy includes option 82 information.
NOTE: You must include the
DHCP relay and relay proxy to send the release message when the
client-discover-match
You can use the
[edit forwarding-options dhcp-relay dhcpv6]
the default behavior for DHCPv6 relay agent.
To send a release message:
Specify that you want to configure override options.
1.
For DHCP relay agent:
[edit forwarding-options dhcp-relay]
user@host# edit overrides
For DHCPv6 relay agent:
[edit forwarding-options dhcp-relay dhcpv6]
user@host# edit overrides
Specify that you want DHCP relay and relay proxy (or DHCPv6 relay agent) to send
2.
a release message when clients are deleted.
[edit forwarding-options dhcp-relay overrides]
user@host# set send-release-on-delete
Extended DHCP Relay Agent Overview
Overriding the Default DHCP Relay Configuration Settings on page 373
DHCP requests that are received but have no entry in the database are known as stray
requests. By default, DHCP relay, DHCP relay proxy, and DHCPv6 relay agent attempt
to bind the requesting client by creating a database entry and forwarding the request to
the DHCP server. If the server responds with an ACK, the client is bound and the ACK is
forwarded to the client. If the server responds with a NAK, the database entry is deleted
Chapter 11: Configuring DHCP and DHCPv6 Relay Agent
send-release-on-delete
statement is included.
statement to configure
hierarchy level to override
381