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13-11

Dynamic Host Configuration Protocol (DHCP)

Configuring a DHCP Server

Specifying DNS, WINS, and Other Servers

DHCP clients often need other configurations besides an IP address. The DHCP

server can also issue addresses to clients for the devices that provide various

services for the subnet.

DNS Server. A DNS server tracks the IP addresses associated with specific

hostnames. It translates a hostname into its IP address in response to requests

from DNS clients. Clients need a DNS server so that users can enter hostnames

to reach other hosts and browse the Internet. You should designate at least

one DNS server for the DHCP client by entering the following command:

Syntax: dns-server <A.B.C.D> [<second A.B.C.D>]

You may specify an optional secondary DNS server by adding a second IP

address. For example:

ProCurve(config-dhcp)# dns-server 192.168.1.25 15.3.1.20

WINS (NetBIOS) Server. A WINS server maps computers’ NetBIOS names

to IP addresses. It ensures that hosts on the same network do not have the

same hostname, and it performs DNS-type services for hosts with dynamic

addresses. When a computer changes location in the network, the WINS server

automatically updates the entry for its hostname with its new DHCP address.

If your private network uses NetBIOS, you should give the DHCP client the

address of the WINS server. Enter:

Syntax: netbios-name-server <A.B.C.D> [<second A.B.C.D>]

You may specify IP addresses for up to two WINS servers.

Other Servers. You can also assign clients a Trivial File Transfer Protocol

(TFTP) server and a Network Time Protocol (NTP) server.

Clients download config and software files from TFTP servers.

NTP servers ensure that all clients’ clocks are synchronized, which can be very

important for some organizations. If the NTP server is in a different timezone

than the DHCP clients, you must set a timezone offset. The range for the offset

is -12 to 12. For example, to set an offset for a server 2 hours ahead of the

local router, enter timezone-offset -2.

HP ProCurve 7000dl Series User Manual

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