3com 5500-SI Manual De Usuario

C

HAPTER

 10: DHCP S

ERVER

 C

ONFIGURATION

Perform the operations listed in Table 131 if you specify to assign IP addresses of a 
global DHCP address pool to DHCP clients.

A 3COM VCX device operating as a DHCP client requests the DHCP server for all 
sub-options of option 184. A S5500 series switch operates as the DHCP server. The 
option 184 supporting function is configured for a global DHCP address pool. The 
sub-options of option 184 are as follows:

■

NCP-IP: 3.3.3.3

■

AS-IP: 2.2.2.2

■

Voice VLAN: enabled

■

Voice VLAN ID: 1

■

Fail-over routing IP: 1.1.1.1

■

Dialer string: 99*

Table 131   Configure the option 184 supporting function in global DHCP address pool view

Enter system view

system-view

-

Configure the interface to 
operate in DHCP server mode 
and assign the IP addresses of 
an interface-based address 
pool to DHCP clients

dhcp select global [ 
subaddress ] { all | 
interface 
interface-type 
interface-number [ 
to interface-type 
interface-number ] }

Required

Enter DHCP address pool view dhcp server ip pool 

-

Configure an IP address range 
IP addresses in which are 
dynamically assigned

network ip-address 
[ mask netmask ]

-

Configure the NCP-IP 
sub-option

voice-config ncp-ip 
ip-address

Required

Configure the AS-IP 
sub-option

voice-config as-ip 
ip-address

Optional
You can configure this sub-option only after 
you configure the NCP-IP sub-option.

Configure the voice VLAN 
configuration sub-option

voice-config 
voice-vlan vlan-id { 
enable | disable }

Optional
You can configure this sub-option only after 
you configure the NCP-IP sub-option.

Configure the Fail-over 
routing sub-option

voice-config fail-over 
ip-address 
dialer-string

Optional
You can configure this sub-option only after 
you configure the NCP-IP sub-option.