Accton Technology ES4710BD manual 312

ES4710BD 10 Slots L2/L3/L4 Chassis Switch

Scenario 2:

Fig 14-3 DHCP Relay Configuration

As shown in the above figure, ES4710BD is configured as a DHCP relay. The DHCP server address is 10.1.1.10, TFTP server address is 10.1.1.20, the configuration steps are as follows: Switch(Config)# service dhcp

Switch(Config)#interface vlan 1 Switch(Config-If-Vlan1)#ip address 192.168.1.1 255.255.255.0 Switch(Config-If-Vlan1)#exit Switch(Config)#interface vlan 2 Switch(Config-If-Vlan2)#ip address 10.1.1.1 255.255.255.0 Switch(Config-If-Vlan2)#exit

Switch(Config)#ip forward-protocol udp 67 Switch(Config)#interface vlan 1 Switch(Config-If-Vlan1)#ip help-address 10.1.1.10 Switch(Config-If-Vlan1)#exit Switch(Config)#ip forward-protocol udp 69 Switch(Config)#interface vlan 1 Switch(Config-If-Vlan1)#ip help-address 10.1.1.20

Note: DHCP server address and TFTP server address must be configured separately since their receiving UDP protocols are different. It is recommended to use the combination of command “ip forward-protocol udp <port>” and ”ip helper-address<ipaddress>”. “ip help-address” can only be configured for ports on layer 3 and cannot be configured on layer 2 ports directly.

Usage Guide:

When a DHCP/BootP client is connected to a VLAN1 port of the switch, the client can only get its address from 10.16.1.0/24 instead of 10.16.2.0/24. This is because the broadcast packet from the

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