3com 3031 Instruccion De Instalación

C

HAPTER

 30: DHCP C

ONFIGURATION

Figure 105   DHCP server and client in the same sub-net

Enable DHCP services

[3Com]dhcp enable

Forbid auto allocation of IP addresses (including DNS address, NetBIOS address 
and egress gateway address)

[3Com]dhcp server forbidden-ip 10.1.1.2

[3Com]dhcp server forbidden-ip 10.1.1.4

[3Com]dhcp server forbidden-ip 10.1.1.126

[3Com]dhcp server forbidden-ip 10.1.1.254

Configure common attributes for DHCP address pool 0 (address pool range, 
domain name and DNS address). 

[3Com]dhcp server ip-pool 0

[3Com-dhcp-0]network 10.1.1.0 mask 255.255.255.0

[3Com-dhcp-0]domain-name 3Com.com

[3Com-dhcp-0]dns-list 10.1.1.2

Configure attributes for DHCP address pool 1 (address pool range, egress gateway 
address and address lease limit)

[3Com]dhcp server ip-pool 1

[3Com-dhcp-1]network 10.1.1.0 mask 255.255.255.128

[3Com-dhcp-1]gateway-list 10.1.1.126

[3Com-dhcp-1]expired day 10 hour 12

Configure attributes for DHCP address pool 2 (address pool range, egress gateway 
address, NetBIOS address and address lease limit).

[3Com]dhcp server ip-pool 2

[3Com-dhcp-2]network 10.10.1.128 mask 255.255.255.128

[3Com-dhcp-2]expired day 5

[3Com-dhcp-2]nbns-list 10.1.1.4

[3Com-dhcp-2]gateway-list 10.1.1.254

The segment for DHCP client is 10.110.0.0 and that for DHCP server is 
202.38.0.0. A router which supports DHCP relay function is required for 

LAN

LAN

NetBIOS Server

Client

DNS Server

Client

Client

Client

Client

Client

RouterA

DHCP

Server

RouterB