Filter
Top Products
Nokia M10 User’s Manual
DRAFT
E Copyright Nokia Telecommunications Oy
NTC C33539002SE_A0
6-8
6.8 Dynamic Host Configuration Protocol (DHCP)
The Dynamic Host Configuration Protocol allows one host on a
TCP/IP network to provide configuration information to other hosts on
that network. DHCP is built on a client-server model, where
designated DHCP server hosts allocate network addresses and deliver
configuration parameters to dynamically configured hosts. When
DHCP is enabled, the DHCP client requests configuration
information, such as an IP address and network information, from a
DHCP server each time it is restarted. The DHCP server responds to
the request by sending the client an IP address and information about a
network, such as the network’s subnet mask, broadcast address, name
service information, authentication information, and routing
information.
6.8.1 DHCP for LAN clients
The Nokia M10 can provide addresses for as many as 253 devices on
the network connected to its Ethernet port. When M10 receives a
DHCP request from a client computer, it determines what address to
assign by checking its DHCP lease table to identify an unused address
in its DHCP range. When it finds an address that should be free, the
Nokia M10 sends a broadcast message on the network to verify that no
other host is using the same IP address. If another host indicates that it
is using the selected address, the Nokia M10 selects another address
and repeats the sequence until it finds an address that is not in use.
Dynamic allocation of IP addresses means that an IP address can be
reused when it is no longer needed by the client to which it is assigned.
Dynamic IP address allocation is particularly useful in situations
where clients connect to a network temporarily or where a site needs to
share a limited pool of IP addresses among a group of clients that do
not need permanent IP addresses.
6.8.2 DHCP for WAN port configuration
It is possible to configure Nokia M10 so that it operates as a DHCP
client. It can retrieve IP addresses for the ADSL/ATM channels from
the network. However, the following requirements must be met:
D ADSL/ATM channels use VC multiplexed or LLC/SNAP RFC
1483 encapsulations for IP or Ethernet packets.
D IP address information of the WAN interface has been set to
0.0.0.0