DHCPDB.SERVER(5)

NAME
dhcpdb.server - The database file which lists DHCP servers

SYNOPSIS
dhcpdb.server is used by the relay agent to determine servers to which the relay agent forwards a message from client.

Only the first line of dhcpdb.server is a significant, and IP address of DHCP server is written on each of the remaining lines. (An only one address per line).

The relay agent can forward a messages to multiple DHCP servers. It improves reliability DHCP as a whole. The first line of dhcpdb.server specifies number of servers to which the relay agent send a message. If it is 2, the relay agent choose two servers on the basis of an algorithm and forwards a message to each.

There is no mean to specify the server which is on the same subnet as the relay agent, or rather it may cause non-desirable behavior

EXAMPLES
2   # Forward the same message to 2 servers.
133.4.30.9
    # 1st Server's IP address
133.4.29.2
    # 2nd Server's IP address
133.27.4.200
    # 3rd Server's IP address

SEE ALSO
relay(8)

R. Droms, Dynamic Host Configuration Protocol, RFC2131.

W. Wimer, Clarifications and Extensions for the Bootstrap Protocol, RFC1542.

S. Alexander, R. Droms, DHCP Options and BOOTP Vendor Extensions, RFC2132.

R. Droms, Interoperation Between DHCP and BOOTP, RFC1534.