3Com 5500-SI - Configuration Example

142 CHAPTER 10: DHCP SERVER CONFIGURATION
Configuring the option 184 supporting function in global DHCP address pool
view
Perform the operations listed in Table 131 if you specify to assign IP addresses of a
global DHCP address pool to DHCP clients.
Configuration Example Network requirements
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
Operation Command Description
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
pool-name
-
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.