3Com 8807 Configuration Manual page 691

Configuring DNS Server
Address for DHCP
Clients
By default, global address pools and VLAN interface address pools are not
configured with any DHCP client domain name.
If you execute the dhcp server domain-name command multiple times, the
newly configured DHCP client domain name overwrites the existing one.
When a host uses a domain name to access the Internet, the domain name must
be translated into an IP address. Domain name system (DNS) is responsible for the
translation. Therefore, when a DHCP server assigns an IP address to a DHCP client,
it must also send a DNS server address to the client. At present, you can configure
up to eight DNS server addresses for one DHCP address pool.
Configuring DNS server address for a global DHCP address pool
Perform the following configuration in DHCP address pool view.
Table 633 Configure DNS server address for a global DHCP address pool
Operation
Configure one or more DNS server addresses
for a global DHCP address pool
Remove one or all DNS server addresses
configured for a global DHCP address pool
Configuring DNS server address for current VLAN interface
Perform the following configuration in VLAN interface view.
Table 634 Configure DNS server address for current VLAN interface
Operation
Configure one or more DNS server addresses
for the DHCP address pool of the current
VLAN interface
Remove one or all DNS server addresses
configured for the DHCP address pool of the
current VLAN interface
Configuring DNS server address for multiple VLAN interfaces
Perform the following configuration in system view.
Table 635 Configure DNS server address for multiple VLAN interfaces
Operation
Configure one or more DNS server addresses
for the DHCP address pools of multiple VLAN
interfaces
Remove one or all DNS server addresses
configured for the DHCP address pools of
multiple VLAN interfaces
By default, no DNS server address is configured for global and VLAN interface
address pools.
If you execute the dhcp server dns-list command multiple times, the newly
configured IP addresses overwrite the existing ones.
Configuring DHCP Server
Command
dns-list ip-address [ ip-address ]
undo dns-list { ip-address | all }
Command
dhcp server dns-list ip-address [ ip-address ]
undo dhcp server dns-list { ip-address | all }
Command
dhcp server dns-list ip-address [ ip-address ]
{ interface vlan-interface vlan-id [ to
vlan-interface vlan-id ] | all }
undo dhcp server dns-list { ip-address | all }
{ interface vlan-interface vlan-id [ to
vlan-interface vlan-id ] | all }
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