Avaya G430 Manual page 446

The router
Note:
The same DHCP/BOOTP relay agent serves both the BOOTP and DHCP protocols.
When there is more than one IP interface on a VLAN, the Branch Gateway chooses the lowest
IP address on this VLAN when relaying DHCP/BOOTP requests. The DHCP/BOOTP server
then uses this address to decide the network from which to allocate the address. When there
are multiple networks configured, the Branch Gateway performs a round-robin selection
process.
When the DHCP/BOOTP server is configured to allocate addresses only from a single
subnetwork among the different subnetworks defined on the VLAN, you might need to
configure the Branch Gateway with the relay address on that subnet so the DHCP/BOOTP
server can accept the request.
DHCP/BOOTP Relay in the Branch Gateway is configurable per VLAN and allows for two
DHCP/BOOTP servers to be specified. In this case, the Branch Gateway duplicates each
request, and sends it to both servers. This duplication provides redundancy and prevents the
failure of a single server from blocking hosts from loading. You can enable or disable DHCP/
BOOTP Relay in the Branch Gateway.
Summary of DHCP and BOOTP relay commands
For more information about these commands, see the Avaya Branch Gateways G250 and
G350 CLI Reference.
For more information about these commands, see the Avaya Branch Gateway G430 CLI
Reference.
Root level
command
interface
(fastethernet
| VLAN)
446 Administering Avaya G430 Branch Gateway
Command
Enter the FastEthernet or VLAN interface
configuration context
ip bootp-dhcp Select the network from which the BOOTP/
DHCP server should allocate an address
network
This command is required only when there
are multiple IP interfaces over the VLAN. You
must be in an interface context to use this
command
no ip bootp- Restores the default value.
dhcp network
ip bootp-dhcp Add or remove a BOOTP/DHCP server to
handle BOOTP/DHCP requests received by
server
the current interface
Comments? infodev@avaya.com
Description
October 2013