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DHCP Server Operation

option arp-cache-timeout uint32;

This option specifies the timeout in seconds for ARP cache entries

option ieee802-3-encapsulation flag;

This option specifies whether or not the client should use Ethernet Version 2 (RFC 894) or IEEE 802.3 (RFC 1042) encapsulation if the interface is an Ethernet. A value of 0 indicates that the client should use RFC 894 encapsulation. A value of 1 means that the client should use RFC 1042 encapsulation.

option default-tcp-ttl uint8;

This option specifies the default TTL that the client should use when sending TCP segments. The minimum value is 1.

option tcp-keepalive-interval uint32;

This option specifies the interval (in seconds) that the client TCP should wait before sending a keep-alive message on a TCP connection. The time is specified as a 32-bit unsigned integer. A value of zero indicates that the client should not generate keep-alive messages on connections unless specifically requested by an application.

option tcp-keepalive-garbage flag;

This option specifies the whether or not the client should send TCP keep-alive messages with a octet of garbage for compatibility with older implementations. A value of 0 indicates that a garbage octet should not be sent. A value of 1 indicates that a garbage octet should be sent.

option nis-domain string;

This option specifies the name of the client’s NIS (Sun Network Information Services) domain. The domain is formatted as a character string consisting of characters from the NVT ASCII character set.

option nis-serversip-address [, ip-address ... ];

This option specifies a list of IP addresses indicating NIS servers available to the client. Servers should be listed in order of preference.

option ntp-serversip-address [, ip-address ... ];

This option specifies a list of IP addresses indicating NTP (RFC 1035) servers available to the client. Servers should be listed in order of

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IBM Heritage user manual Option arp-cache-timeout uint32

Heritage specifications

IBM, or International Business Machines Corporation, is a global leader in technology and consulting, with a heritage that spans over a century. Established in 1911, IBM initially emerged from a merger of four companies, and it has since evolved into one of the most influential players in the tech industry.

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