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Cooper Bussmann BU-245U-E Wireless Ethernet & Device Server User Manual
3.10 DHCP Server Configuration
The BU-245U-E is able to act as a DHCP server,supplying IP addresses automatically to other DHCP Client devices.
Note that the BU-245U-E units need to act in conjunction with their connected devices. If a connected device is a DHCP server,the local and
remote BU-245U-E units can be configured as DHCP Clients and receive IP addresses from the server device. Similarly,if a BU-245U-E is
configured as a DHCP server,it can provide IP addresses to DHCP Clients, both BU-245U-E units as well as other connected devices.
Configuration items for the DHCP Server are listed below.
Enabled Tick this box to enable the DHCP Server
IP Range Minimum / Maximum The DHCP Server will assign IP addresses to DHCP Clients from within this range of addresses.
Gateway / Primary DNS / These Settings are common to all of the DHCP Clients,and refer to the gateway address, and
Secondary DNS Domain Name Service (DNS) Configuration.
Lease Time This is the number of seconds the client is granted the assigned IP address.
The client should renew its lease within this time.
3.11 DNS Server Configuration
DNS (Domain Name Service) allows devices to be given human-readable names in additions to their IP address. This makes identification of
devices (hosts) simpler,and makes it possible to identify devices which have been automatically assigned their IP address by a DHCP server (See
section 3.9 “DHCP Server Configuration”). DNS is the system which translates internet names (such as www.cooperbussmann.com) to IP
Addresses.The Cooper Bussmann BU-245U-E can act as a DNS Ser ver for a local network.Name to IP address mapping are automatically
updated by the built in DHCP server when it issues an IP address to a client unit.
For the DNS Server configuration to be effective, Each DNS Client must be configured with the address of this DNS server,as either the primary or
secondary DNS (secondary DNS is only used if there is no response from the primary DNS). Normally,this is done by setting the primar y DNS field
of the DHCP server configuration to the wireless IP address. This address is then provided to client units to use as their primary DNS server
address when the DHCP server issues an IP address. The DNS Server is configured using the following settings.
Enabled Tick this box to enable the DNS Server
Domain Name This is a common suffix applied to the name of each device in the network. If your network is part of a
larger network, this would be assigned to you by the relevant naming authority.If your network is
stand-alone, this field is set to an arbitrary name of your choice.
Device Name (Host Name) This is the DNS name of the local device. (Commonly referred to as the host name or computer name).
This setting is duplicated on the main Module Information configuration page.This is the name which is
used to refer to this device. (Refer Section 3.21 “Module Information Configuration.”)
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