NOTE: PPP interfaces are not supported on EX Series switches.
When DHCPv6 is configured over PPP interfaces, the PPP RADIUS authentication data
can be used to select the pool from which the response information is taken. Additionally
other RADIUS attributes can also be inserted into the DHCPv6 reply message. If an overlap
exists between RADIUS attributes and local pool attributes, the RADIUS values are used
instead of the local configuration data. If no RADIUS information is received from the
underlying PPP interface, then the behavior is the same as described previously for
non-PPP interfaces.
Related
Documentation
Overriding Default DHCP Local Server Configuration Settings on page 28•
• Enabling Processing of Client Information Requests on page 108
Enabling Processing of Client Information Requests
By default, DHCP local server and DHCPv6 local server do not respond to information
request messages from the client. You can enable DHCP local server and DHCPv6 local
server to process these messages and respond to them with an acknowledgment (ack
or reply message, respectively) and the requested information.
DHCP relay agent automatically forwards the information request messages without
modification to the configured server group by means of the interfaces configured for
the respective server group. The messages are dropped If they are received on an
unconfigured interface. DHCP relay proxy also supports forwarding these messages. You
cannot disable forwarding of the information request messages.
Configure one or more local address pools if you want to use a local pool rather than one
provided by AAA. See Configuring an Address-Assignment Pool Name and Addresses. For
processing information request messages, the address configuration is not necessary.
For DHCP local server, you must specify the IPv4 family; for DHCPv6 local server, you
must specify the IPv6 family.
See Configuring DHCP Client-Specific Attributes Applied When Clients Obtain an Address
for details about how to configure the information sought by clients that send information
request messages.
To enable processing of DHCP client information request messages:
1. Specify that you want to configure override options.
•
For DHCP local server:
[edit system services dhcp-local-server overrides]
user@host# set process-inform
•
For DHCPv6 local server:
[edit system services dhcp-local-server dhcpv6 overrides]
user@host# set process-inform
Copyright © 2017, Juniper Networks, Inc.108
DHCP and Other System Services Feature Guide for EX2300, EX3400, and EX4300 Switches
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