3Com 10014299 manual Set the type of NetBIOS node for Dhcp client, Nbns-list ip-address1

DHCP Server Configuration 341

That is because the new DNS address will replace the previous one rather than superimpose it.

9Configure IP Address of NetBIOS Server Used by DHCP Clients

Clients can communicate through the NetBIOS protocol. As for the clients installed with the Microsoft operating system, WINS (Windows Internet Naming Service) Server will provide the hostname-to-IP-address resolution mechanism for the hosts adopting the NetBIOS protocol. Therefore, WINS setting is necessary for most Windows network clients. Each DHCP address pool can be configured with up to a maximum of 8 NetBIOS addresses.

Perform the following configurations in DHCP address pool view.

Table 375 Configure the address of NetBIOS server used by DHCP clients

Operation	Command
Configure the address of NetBIOS server used	nbns-listip-address1 [
by DHCP clients	ip-address2 ...ip-address8 ]
Delete the address of NetBIOS server used by	undo nbns-list { ip-address all
DHCP clients	}

By default, the IP address of NetBIOS server is not configured.

When specifying multiple NetBIOS servers, you need to continuously configure up to two addresses in the nbns-listcommand, instead of using this command repeatedly. That is because the new NetBIOS server address will replace the previous one other than superimpose it.

10Set the type of NetBIOS node for DHCP client

When DHCP clients use the NetBIOS protocol to communicate on WANs, the mapping relations should be established between host names and IP addresses. There are four types of NetBIOS nodes for obtaining mapping relations:

■b-node: Obtain the mapping between them by means of broadcast.

■p-node: Obtain the mapping relation by means of communicating with a NetBIOS server.

■m-node: p-node owning part of the broadcasting features.

■h-node: b-node owning the “peer-to-peer” communicating mechanism.

Perform the following configurations in DHCP address pool view.

Table 376 Set the type of NetBIOS node for DHCP client

Operation	Command
Set the type of NetBIOS node for DHCP client	netbios-type { b-node
	h-node m-node p-node }
Restore the type of NetBIOS node for DHCP client to	undo netbios-type
the default value

By default, clients adopt h-node.

11Configure Maximum Number of ping Packets Sent by the DHCP Server and the Longest Time Waiting for Response

Before allocating an IP address to a client, the DHCP server should detect this IP address. That is, checking whether there is response through pinging the host with this address. If no response is received after the longest time waiting for a response, re-send ping packets to this address until reaching the maximum number of ping packets allowed to be sent. If still no response is received, you can