dhcp rebind forward-mode

Function

The dhcp rebind forward-mode all command configures the device to forward DHCP Rebind packets to all DHCPv4 servers in a DHCPv4 server group.

The undo dhcp rebind forward-mode command restores the default configuration.

By default, the device forwards DHCP Rebind packets to the DHCPv4 server that allocates IP addresses.

This command is supported only on the NetEngine 8000 F1A.

Format

dhcp rebind forward-mode all

undo dhcp rebind forward-mode

Parameters

None

Views

DHCP group view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
dhcp	write

Usage Guidelines

Usage Scenario

In the DHCPv4 server backup scenario, the device functioning as a DHCP relay sends Rebind packets only to the master DNCPv4 server by default. If the master DHCPv4 server is Down, the backup DHCPv4 servers cannot automatically take over. To resolve this problem, run the dhcp rebind forward-mode all command on the device to send DHCP Rebind packets to the master and backup DHCPv4 servers simultaneously. Even if one of the servers is Down, the others can still receive Rebinds packets.

The DHCPv4 server group must contain multiple servers.

Configuration Impact

After you run the dhcp rebind forward-mode all command, the device forwards DHCP Rebind packets to all DHCPv4 servers in a DHCPv4 server group.

Precautions

In VS mode, this command is supported only by the admin VS.

Example

# Configure the NetEngine 8000 F to forward DHCP Rebind packets to all DHCPv4 servers in the DHCPv4 server group named remote.

<HUAWEI> system-view
[~HUAWEI] dhcp-server group remote
[*HUAWEI-dhcp-server-group-remote] dhcp-server 1.2.3.4 weight 20
[*HUAWEI-dhcp-server-group-remote] commit
[~HUAWEI-dhcp-server-group-remote] dhcp-server algorithm polling check-loose
[*HUAWEI-dhcp-server-group-remote] dhcp rebind forward-mode all