Trusting Option 82 Information - Juniper EX3400 Features Manual

Trusting Option 82 Information

Related
Documentation
Copyright © 2017, Juniper Networks, Inc.
Configure DHCPv6 relay agent to insert option 18 (Relay Agent Interface-ID), option
2.
37 (Relay Agent Remote-ID), or both.
To configure option 18:
[edit forwarding-options dhcp-relay dhcpv6]
user@host# edit relay-agent-interface-id
To configure option 37:
[edit forwarding-options dhcp-relay dhcpv6]
user@host# edit relay-agent-remote-id
Specify that the textual description is included in the option information. In the
3.
following example, the option information includes the description used for the device
interface.
To include the textual description in option 18:
[edit forwarding-options dhcp-relay dhcpv6 relay-agent-interface-id]
user@host# set use-interface-description
To include the textual description in option 37:
[edit forwarding-options dhcp-relay dhcpv6 relay-agent-remote-id]
user@host# set use-interface-description
By default, the DHCP relay agent treats client packets with a giaddr of 0 (zero) and
option 82 information as if the packets originated at an untrusted source, and drops them
without further processing. You can override this behavior and specify that the DHCP
relay agent process DHCP client packets that have a giaddr of 0 (zero) and contain
option 82 information.
To configure DHCP relay agent to trust option 82 information:
Specify that you want to configure override options.
1.
[edit forwarding-options dhcp-relay]
user@host# edit overrides
Specify that the DHCP relay agent process DHCP client packets with a giaddr of 0
2.
and that contain option 82 information.
[edit forwarding-options dhcp-relay overrides]
user@host# set trust-option-82
Extended DHCP Relay Agent Overview on page 46
Overriding the Default DHCP Relay Configuration Settings on page 68
Chapter 4: DHCP Relay Agent
device
device
67