Avaya G430 Manual page 445

Related topics:
DHCP on page 445
BOOTP on page 445
DHCP/BOOTP relay
Summary of DHCP and BOOTP relay commands
DHCP
DHCP assigns dynamic IP addresses to devices on a network. With dynamic addressing, a
device can have a different IP address whenever the device 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 addressing simplifies network administration because the software keeps track of IP
addresses rather than requiring an administrator to manage the task. This means you can add
a new computer to a network without needing to manually assign a unique IP address. Many
ISPs use dynamic IP addressing for dial-up users. However, dynamic addressing may not be
desirable for a network server.
BOOTP
BOOTP is an Internet protocol that allows a diskless workstation to discover the following:
• Its own IP address
• The IP address of a BOOTP server on the network
• A file to be loaded into memory to boot the workstation
BOOTP allows the workstation to boot without requiring a hard disk or floppy disk drive. It is
used when the user or station location changes frequently. The protocol is defined by RFC
951.
DHCP/BOOTP relay
The Branch Gateway supports the DHCP/BOOTP relay agent function. This is an application
that accepts DHCP/BOOTP requests that are broadcast on one VLAN. The application sends
them to a DHCP/BOOTP server. That server connects to another VLAN or a server that might
be located across one or more routers that might otherwise not get the broadcast request. The
relay agent handles the DHCP/BOOTP replies as well. The relay agent transmits the replies
to the client directly or as broadcast, according to a flag in the reply message.
Administering Avaya G430 Branch Gateway
on page 445
on page 446
The router
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