SGS-6341-Series User Manual

Usage Guide: When a DHCP/BOOTP client is con
nected 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 client will be requesting the IP address in the same segment of the
VLAN interface after VLAN interface forwarding, and the VLAN interface IP address is
10.16.1.2/24, therefore the IP address assigned to the client will belong to 10.16.1.0/24.
If the DHCP/BOOTP client wants to have an address in 10.16.2.0/24, the gateway forwarding
broadcast packets of the client must belong to 10.16.2.0/24. The connectivity between the
client gateway and the switch must be ensured for the client to get an IP address from the
10.16.2.0/24 address pool.
Scenario 2:
E1/1 E1/2
DHCP Client
DHCP Client
192.168.1.1
10.1.1.1
DHCP Relay
DHCP Server
10.1.1.10
DHCP Client
Figure 31
-3:
DH
CP
Rel
ay
Configuration
As shown in the above figure, route switch is configured as a DHCP relay. The DHCP server
address is 10.1.1.10, the configuration steps is 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)#vlan 2
Switch(Config-Vlan-2)#exit
Switch(config)#interface Ethernet 1/2
Switch(Config-Erthernet1/2)#switchport access vlan 2
Switch(Config-Erthernet1/2)#exit
Switch(config)#interface vlan 2
31-67
User’s Manual of SGS-6341 series