Qtech QSW-8200-28T-POEAC- DC Команды для dhcp-сервера онлайн [21/79] 481628

User Manual

Chapter 1. Commands for DHCP 21

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1.2.2 ip dhcp relay share-vlan <vlanid> sub-vlan <vlanlist>

 This command is not supported by the switch.

1.2.3 ip forward-protocol udp bootps

 Command: ip forward-protocol udp bootps

 no ip forward-protocol udp bootps

 Function: Sets DHCP relay to forward UPD broadcast packets on the port; the “no ip

forward-protocol udp bootps”command cancels the service.

 Parameter: bootps forwarding UDP port as 67 DHCP broadcast packets.

 Default: Not forward UPD broadcast packets by default.

 Command mode: Global Mode

 Usage Guide: The forwarding destination address is set in the “ip helper-address”

command and described later.

 Example: Setting DHCP packets to be forwarded to 192.168.1.5.

 Switch(config)#ip forward-protocol udp boots

 Switch(config)#interface vlan 1

 Switch(Config-if-Vlan1)#ip helper-address 192.168.1.5

1.2.4 ip helper-address

 Command: ip helper-address <ip-address>

 no ip helper-address <ip-address>

 Function: Specifies the destination address for the DHCP relay to forward UDP packets.

The “no ip helper-address <ip-address>” command cancels the setting.

 Default: None.

 Command mode: Interface Configuration Mode

 Usage Guide: The DHCP relay forwarding server address corresponds to the port

forwarding UDP, i.e. DHCP relay forwards corresponding UDP packets only to the

corresponding server instead of all UDP packets to all servers. When this command is

run after “ip forward-protocol udp <port>” command, the forwarding address

configured by this command receives the UDP packets from <port>. The combination of

“ip forward-protocol udp <port>” command and this command should be used for

configuration.

1.2.5 show ip forward-protocol

 Command: show ip forward-protocol

 Function: Show the configured port ID of the protocol which support the forwarding of

broadcast packets, it means the port ID for forwarding DHCP packets.

 Command mode: Admin and configuration mode

 Example:

 Switch#show ip forward-protocol

 Forward protocol(UDP port): 67(active)