Changing The Gateway Ip Address (Giaddr) Field To The Giaddr Of The Dhcp Relay Agent; Replacing The Dhcp Relay Request And Release Packet Source Address - Juniper ACX1000 Configuration Manual

ACX Series Universal Access Router Configuration Guide
Related
Documentation

Changing the Gateway IP Address (giaddr) Field to the giaddr of the DHCP Relay Agent

Related
Documentation

Replacing the DHCP Relay Request and Release Packet Source Address

376
See "Disabling Automatic Binding of Stray DHCP Requests" on page
(DHCPv4 and DHCPv6) Assign a single-session DHCP dual-stack group to a specified
17.
group of subscribers. You must assign the group to both legs of the DHCP dual stack.
See Configuring Single-Session DHCP Dual-Stack Support.
(Optional, DHCPv4 and DHCPv6l) Specify that a short lease be sent to the client.
18.
See Configuring DHCP Asymmetric Leasing.
Configuring Group-Specific DHCP Relay Options on page 372
Deleting DHCP Local Server and DHCP Relay Override Settings
You can configure the DHCP relay agent to change the gateway IP address (giaddr) field
in packets that it forwards between a DHCP client and a DHCP server.
To overwrite the giaddr of every DHCP packet with the giaddr of the DHCP relay agent
before forwarding the packet to the DHCP server:
Specify that you want to configure override options.
1.
[edit forwarding-options dhcp-relay]
user@host# edit overrides
Specify that the giaddr of DHCP packets is overwritten.
2.
[edit forwarding-options dhcp-relay overrides]
user@host# set always-write-giaddr
Extended DHCP Relay Agent Overview
Overriding the Default DHCP Relay Configuration Settings on page 373
You can configure the DHCP relay agent to replace request and release packets with the
gateway IP address (giaddr) before forwarding the packet to the DHCP server.
To replace the source address with giaddr:
Specify that you want to configure override options.
1.
[edit forwarding-options dhcp-relay]
user@host# edit overrides
381.
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