3com S7906E Manuel De Montage

 

2-18 

z 

As shown in 

, the DHCP server (Switch A) assigns IP addresses to clients in subnet 

10.1.1.0/24, which is subnetted into 10.1.1.0/25 and 10.1.1.128/25. 

z 

The IP addresses of VLAN-interfaces 1 and 2 on Switch A are 10.1.1.1/25 and 10.1.1.129/25 

respectively.  

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In address pool 10.1.1.0/25, configure the address lease duration as ten days and twelve hours, 

domain name suffix aabbcc.com, DNS server address 10.1.1.2/25, gateway 10.1.1.126/25, and 

WINS server 10.1.1.4/25. 

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In address pool 10.1.1.128/25, configure the address lease duration as five days, domain name 

suffix aabbcc.com, DNS server address 10.1.1.2/25, and gateway address 10.1.1.254/25, and 

there is no WINS server address. 

z 

The domain name and DNS server address on subnets 10.1.1.0/25 and 10.1.1.128/25 are the 

same. Therefore, the domain name suffix and DNS server address can be configured only for 

subnet 10.1.1.0/24. Subnet 10.1.1.128/25 can inherit the configuration of subnet 10.1.1.0/24. 

 

In this example, the number of requesting clients connected to VLAN-interface 1 should be less than 

122, and that of clients connected to VLAN-interface 2 should be less than 124. 

 

Figure 2-2 DHCP network diagram 

 

 

1)  Specify IP addresses for VLAN interfaces (omitted). 

2)  Configure the DHCP server 

# Enable DHCP. 

<SwitchA> system-view 

[SwitchA] dhcp enable 

# Exclude IP addresses (addresses of the DNS server, WINS server and gateways). 

[SwitchA] dhcp server forbidden-ip 10.1.1.2