Juniper EX3400 Features Manual page 89

Copyright © 2017, Juniper Networks, Inc.
To override default DHCP relay agent configuration settings:
(DHCPv4 and DHCPv6) Specify that you want to configure override options.
1.
DHCPv4 overrides.
Global override:
[edit forwarding-options dhcp-relay]
user@host# edit overrides
Group-level override:
[edit forwarding-options dhcp-relay]
user@host# edit group
Per-interface override:
[edit forwarding-options dhcp-relay]
user@host# edit group
DHCPv6 overrides.
Global override:
[edit forwarding-options dhcp-relay dhcpv6]
user@host# edit overrides
Group-level override:
[edit forwarding-options dhcp-relay dhcpv6]
user@host# edit group
Per-interface override:
[edit forwarding-options dhcp-relay dhcpv6]
user@host# edit group
(DHCPv4 only) Enable DHCP relay proxy mode.
2.
See "Enabling DHCP Relay Proxy Mode" on page
(DHCPv4 only) Overwrite the giaddr in DHCP packets that the DHCP relay agent
3.
forwards.
See "Changing the Gateway IP Address (giaddr) Field to the giaddr of the DHCP Relay
Agent" on page 72.
(DHCPv4 only) Replace the IP source address in DHCP relay request and release
4.
packets with the gateway IP address (giaddr).
See "Replacing the DHCP Relay Request and Release Packet Source Address" on
page 72.
(DHCPv4 only) Override the DHCP relay agent information option (option 82) in DHCP
5.
packets.
See "Overriding Option 82 Information" on page
group-name overrides
group-name interface interface-name
group-name overrides
group-name interface interface-name
52.
71.
Chapter 4: DHCP Relay Agent
overrides
overrides
69