Technical References

Controls whether the DHCP server retries a DNS update
whenever a client renews its lease, even if it appears
to the server that the update was already completed
successfully. Default is false (disable).
This attribute uses one of the following values:
forward DnsUpdateConfig object (if configured)
reverse DnsUpdateConfig object (if configured)
the default (or where appropriate the server configured
value or default value).
get-subnet-mask-from-policy bool default = false
Controls whether the DHCP server searches all relevant
policies for a subnet mask option to construct a response
to a client. Default is false (disable).
Normally, the DHCP server retains the subnet mask configured
in the scope containing the base being granted to the DHCP
client.
ha-dns-failover-timeout rangeint(30-120) default = 30
Sets the maximum time period in seconds that the DHCP server
waits for replies from a DNS server before failing over to its
partner. Default is 30s.
To use this attribute, first configure your DHCP server to
perform HA DNS updates.
If DHCP is configured for HA-DNS updates, dns-timeout parameters
are set to fit max-dns-retries within ha-dns-failover-timeout.
For example, with a default ha-dns-failover-timeout value of
30 seconds and and max-dns-retries of 3, dns-timeout is set to
6 seconds, so that after 3 retry attempts and an
ha-dns-failover-timeout, the DHCP server failovers. The DHCP
server uses a minimum limit value for a dns-timeout of 2 seconds
and dns-retries of 1.
hardware-unicast bool default = enabled
Controls whether the DHCP server sends unicast rather
than broadcast responses when a client indicates that it can
accept a unicast.
Note: This attribute is only available on these
operating systems: Solaris, Windows 2000, and Windows NT.
ignore-cisco-options string
Skips processing the Cisco-specific DHCP options specified
by name in the comma-separated list. No default.
Allowable option names are vpn-id (185), cisco-vpn-id (221),
and subnet-alloc (220). Use this attribute only if
clients use the options for other purposes.
ignore-icmp-errors bool default = enabled