Accton Technology ES4710BD Dhcp Configuration Example, Ip dhcp relay information policy drop

ES4710BD 10 Slots L2/L3/L4 Chassis Switch

14.3.2.3ip dhcp relay information policy drop

Command: ip dhcp relay information policy drop no ip dhcp relay information policy drop

Function: When layer 3 switches are used as DHCP relays, this command sets the relay forwarding

policy to drop DHCP packets; the “no ip dhcp relay information policy drop”

command allows DHCP packets forwarding.

Default: DHCP relay forwards DHCP broadcast packet by default.

Command mode: Global Mode

Usage Guide: When the DHCP relay should not forward DHCP packets for some reason, this command can be used to disable DHCP packet forwarding on DHCP relay.

Example: Disabling DHCP broadcast packet forwarding on the layer 3 switch. Switch(Config)# ip dhcp relay information policy drop

14.4DHCP Configuration Example

Scenario 1:

Too save configuration efforts of network administrators and users a company is using ES4710BD as a DHCP server. The Admin VLAN IP address is 10.16.1.2/16. The local area network for the company is divided into network A and B according to the office locations. The network configurations for location A and B are shown below.

PoolA(network 10.16.1.0)		PoolB(network 10.16.2.0)
Device	IP address	Device	IP address
Default gateway	10.16.1.200	Default gateway	10.16.1.200
	10.16.1.201		10.16.1.201
DNS server	10.16.1.202	DNS server	10.16.1.202
WINS server	10.16.1.209	WINS server	10.16.1.209
WINS node type	H-node	WINS node type	H-node
Lease	3 days	Lease	3 days

In location A, a machine with MAC address 00-03-22-23-dc-ab is assigned with a fixed IP address of 10.16.1.210 and named as “management”. (The interfaces in the following configurations are wrong; "no switch" command is not available.)

Switch(Config)#service dhcp Switch(Config)#interface vlan 1 Switch(Config-Vlan-1)#ip address 10.16.1.2 255.255.0.0 Switch(Config-Vlan-1)#exit

Switch(Config)#ip dhcp pool A Switch(dhcp-A-config)#network 10.16.1.0 24 Switch(dhcp-A-config)#lease 3

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