DHCP (Dynamic Host Configuration Protocol) Server
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OmniAccess 5740 Unified Services Gateway CLI Configuration Guide
Alcatel-Lucent
DHCP SERVER OVERVIEW
DHCP is a protocol used to configure an IP device connected in a network. The
configuration parameters include - IP address, DNS information, default route and
so on. With dynamic addressing, a device can have a different set of network
parameter values every time it connects to the network. In some systems, the
device's IP address can even change while it is still connected. DHCP also
supports a mix of static and dynamic IP addresses.
Dynamic host configuration simplifies network administration because the
software keeps track of host configuration rather than requiring an administrator to
manage the task. This means that a new network device can be added to a
network without the hassle of manually configuring it. Many ISPs (Internet Service
Providers) use dynamic IP addressing for dial-up users.
ALCATEL-LUCENT SPECIFIC OVERVIEW
• By default, the DHCP service is disabled and you should 'enable' the DHCP
server explicitly for the service to become available.
• The major configurable objects in the DHCP component are the pools and
options. There is a global set of options and each pool can have its own set of
options configured. While processing a client's DHCP request the options will be
looked up in the pool to which the request is matched. If the pool specific options
are not configured, the global options for the VRF the pool belongs to will be
checked. If both of them are not configured, then the particular option will not be
returned in the response message.
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