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 | WINS node type | ||
Lease | 3 days | Lease | 3 days |
In location A, a machine with MAC address
Switch(Config)#service dhcp Switch(Config)#interface vlan 1
Switch(Config)#ip dhcp pool A
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