DHCP Configurable Options
Listed are the DHCP options configurable in the WinGate DHCP server. Most DHCP clients will ignore many of these options. Please only change options that you understand. This section is provided for reference as you will rarely need to change any of these options - DHCP is designed to be a "set and forget" service for WinGate users.
Time offset
Specifies the Universal Coordinated Time (UCT) offset in seconds.
Router
Specifies a list of IP addresses for routers on the client's subnet.
Time server
Specifies a list of IP addresses for time servers available to the client.
Name servers
Specifies a list of IP addresses for name servers available to the client.
DNS servers
Specifies a list of IP addresses for DNS name servers available to the client.
Log servers
Specifies a list of IP addresses for MIT_LCS User Datagram Protocol (UDP) log servers available to the client.
Cookie servers
Specifies a list of IP addresses for RFC 865 cookie servers available to the client.
RCS Log servers
Specifies a list of IP addresses for RFC 1179 line-printer servers available to the client.
Impress servers
Specifies a list of IP addresses for Imagen Impress servers available to the client.
RLP servers
Specifies a list of RFC 887 Resource Location servers available to the client.
Host name
Specifies the host name of up to 63 characters for the client. The name must start with a letter, end with a letter or digit, and have as interior characters only letters, numbers, and hyphens. The name can be qualified with the local DNS domain name.
Boot file size
Specifies the size of the default boot image file for the client, in 512-octet blocks.
Merit dump file
Specifies the ASCII path name of a file where the client's core image is dumped if a crash occurs.
Domain name
Specifies the DNS domain name the client should use for DNS host name resolution.
Swap server
Specifies the IP address of the client's swap server.
Root path
Specifies the ASCII path name for the client's root disk.
Extensions path
Specifies a file retrievable via TFTP containing information interpreted the same as the vendor-extension field in the BOOTP response, except the file length is unconstrained and references to Tag 18 in the file are ignored.
IP layer forwarding
Enables or disables forwarding of IP packets for this client.
Non-local source routing
Enables or disables forwarding of datagrams with non-local source routes.
Policy filter masks
Specifies policy filters that consist of a list of pairs of IP addresses and masks specifying destination/mask pairs for filtering non-local source routes. Any source routed Datagram whose next-hop address does not match a filter will be discarded by the client.
Max Datagram reassembly size
Specifies the maximum size Datagram that the client can reassemble. The minimum value is 576.
Default time-to-live
Specifies the default time-to-live (TTL) that the client uses on outgoing datagrams. The value for the octet is a number between 1 and 255.
All subnets are local
Specifies whether the client assumes that all subnets of the client's internet work use the same MTU as the local subnet where the client is connected. 1 indicates that all subnets share the same MTU; 0 indicates that the client should assume some subnets may have smaller MTUs.
Broadcast address
Specifies the broadcast address used on the client's subnet.
Mask discovery
Specifies whether the client should use Internet Control Message Protocol (ICMP) for subnet mask discovery.
Is Mask supplier
Specifies whether the client should respond to subnet mask requests using ICMP.
Router discovery
Specifies whether the client should solicit routers using the router discovery method in RFC 1256.
Router solicitation address
Specifies the IP address to which the client submits router solicitation requests.
Trailer encapsulation
Specifies whether the client should negotiate use of trailers (RFC 983) when using the ARP protocol.
ARP cache timeout
Specifies the timeout in seconds for ARP cache entries.
Ethernet encapsulation
Specifies whether the client should use Ethernet v. 2 (RFC 894) or IEEE 802.3 (RFC 1042) encapsulation if the interface is Ethernet.
Default time-to-live
Specifies the default TTL the client should use when sending TCP segments. The minimum value of the octet is 1.
Keepalive interval
Specifies the interval in seconds the client TCP should wait before sending a keepalive message on a TCP connection.
Keepalive garbage
Specifies whether the client should send TCP keepalive messages with an octet of garbage data for compatibility with older implementations.
NIS domain name
Specifies the name of Network Information Service (NIS) domain as an ASCII string.
NIS servers
Specifies a list of IP addresses for NIS servers available to the client.
NTP servers
Specifies a list of IP addresses for Network Time Protocol (NTP) servers available to the client.
WINS/NBNS servers
Specifies a list of IP addresses for NetBIOS name servers (NBNS).
NetBIOS over TCP/IP NBDD
Specifies a list of IP addresses for NetBIOS datagram distribution servers (NBDD).
WINS/Netbt node type
Allows configurable NetBIOS over TCP/IP clients to be configured as described in RFC 1001/1002. Options are b-node, p-node, m-node, and h-node.
NetBIOS scope ID
Specifies a string that is the NetBIOS over TCP/IP Scope ID for the client, as specified in RFC 1001/1002.
X Window font server
Specifies a list of IP addresses for X Window font servers available to the client.
X Window system display
Specifies a list of IP addresses for X Window System Display Manager servers available to the client.
