DHCP options

CodeData lengthDescriptionReferences00Pad.RFC 213214Subnet Mask.RFC 213224Time Offset (deprecated).RFC 213234+Router.RFC 213244+Time Server.RFC 213254+Name Server.RFC 213264+Domain Name Server.RFC 213274+Log Server.RFC 213284+Quote Server.RFC 213294+LPR Server.RFC 2132104+Impress Server.RFC 2132114+Resource Location Server.RFC 2132121+Host Name.RFC 2132132Boot File Size.RFC 2132141+Merit Dump File.RFC 2132151+Domain Name.RFC 2132164Swap Server.RFC 2132171+Root Path.RFC 2132181+Extensions Path.RFC 2132191IP Forwarding enable/disable.RFC 2132201Non-local Source Routing enable/disable.RFC 2132218+Policy Filter.RFC 2132222Maximum Datagram Reassembly Size.RFC 2132231Default IP Time-to-live.RFC 2132244Path MTU Aging Timeout.RFC 2132252+Path MTU Plateau Table.RFC 2132262Interface MTU.RFC 2132271All Subnets are Local.RFC 2132284Broadcast Address.RFC 2132291Perform Mask Discovery.RFC 2132301Mask supplier.RFC 2132311Perform router discovery.RFC 2132324Router solicitation address.RFC 2132338+Static routing table.RFC 2132341Trailer encapsulation.RFC 2132354ARP cache timeout.RFC 2132361Ethernet encapsulation.RFC 2132371Default TCP TTL.RFC 2132384TCP keepalive interval.RFC 2132391TCP keepalive garbage.RFC 2132401+Network Information Service Domain.RFC 2132414+Network Information Servers.RFC 2132424+NTP servers.RFC 2132431+Vendor specific information.RFC 1533, RFC 2132444+NetBIOS over TCP/IP name server.RFC 1533, RFC 2132454+NetBIOS over TCP/IP Datagram Distribution Server.RFC 1533, RFC 2132461NetBIOS over TCP/IP Node Type.RFC 1533, RFC 2132471+NetBIOS over TCP/IP Scope.RFC 1533, RFC 2132484+X Window System Font Server.RFC 1533, RFC 2132494+X Window System Display Manager.RFC 1533, RFC 2132504Requested IP Address.RFC 1533, RFC 2132514IP address lease time.RFC 1533, RFC 2132521Option overload.RFC 1533, RFC 2132531DHCP message type.RFC 1533, RFC 2132, RFC 3203, RFC 4388544Server identifier.RFC 1533, RFC 2132551+Parameter request list.RFC 1533, RFC 2132561+Message.RFC 1533, RFC 2132572Maximum DHCP message size.RFC 1533, RFC 2132584Renew time value.RFC 1533, RFC 2132594Rebinding time value.RFC 1533, RFC 2132601+Class-identifier.RFC 1533, RFC 2132612+Client-identifier.RFC 1533, RFC 2132, RFC 4361621 to 255NetWare/IP Domain Name.RFC 224263 NetWare/IP information.RFC 2242641+Network Information Service+ Domain.RFC 2132654+Network Information Service+ Servers.RFC 2132661+TFTP server name.RFC 2132671+Bootfile name.RFC 2132680+Mobile IP Home Agent.RFC 2132694+Simple Mail Transport Protocol Server.RFC 2132704+Post Office Protocol Server.RFC 2132714+Network News Transport Protocol Server.RFC 2132724+Default World Wide Web Server.RFC 2132734+Default Finger Server.RFC 2132744+Default Internet Relay Chat Server.RFC 2132754+StreetTalk Server.RFC 2132764+StreetTalk Directory Assistance Server.RFC 213277Variable.User Class Information.RFC 300478Variable.SLP Directory Agent.RFC 261079Variable.SLP Service Scope.RFC 2610800Rapid Commit.RFC 4039814+.FQDN, Fully Qualified Domain Name.RFC 470282Variable.Relay Agent Information.RFC 3046, RFC 50108314+Internet Storage Name Service.RFC 417484  RFC 367985Variable.NDS servers.RFC 224186Variable.NDS tree name.RFC 224187Variable.NDS context.RFC 224188Variable.BCMCS Controller Domain Name list.RFC 4280894+BCMCS Controller IPv4 address list.RFC 428090Variable.Authentication.RFC 3118914client-last-transaction-time.RFC 4388924nassociated-ip.RFC 438893Variable.Client System Architecture Type.RFC 457894Variable.Client Network Interface Identifier.RFC 457895Variable.LDAP, Lightweight Directory Access Protocol.RFC 367996  RFC 367997Variable.Client Machine Identifier.RFC 457898 Open Group's User Authentication.RFC 248599 GEOCONF_CIVIC.RFC 4776100 IEEE 1003.1 TZ String.RFC 4833101 Reference to the TZ Database.RFC 4833102
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111  RFC 3679112Variable.NetInfo Parent Server Address.RFC 3679113Variable.NetInfo Parent Server Tag.RFC 3679114Variable.URL.RFC 3679115  RFC 36791161Auto-ConfigureRFC 25631172+Name Service Search.RFC 29371184Subnet Selection.RFC 3011119VariableDNS domain search list.RFC 3397120VariableSIP Servers DHCP Option.RFC 33611215+Classless Static Route Option.RFC 3442122VariableCCC, CableLabs Client Configuration.RFC 3495, RFC 3594, RFC 363412316GeoConf.RFC 3825124 Vendor-Identifying Vendor Class.RFC 3925125 Vendor-Identifying Vendor-Specific.RFC 3925126  RFC 3679127  RFC 3679128 TFTP Server IP address.RFC 4578129 Call Server IP address.RFC 4578130 Discrimination string.RFC 4578131 Remote statistics server IP address.RFC 4578132 802.1P VLAN ID.RFC 4578133 802.1Q L2 Priority.RFC 4578134 Diffserv Code Point.RFC 4578135 HTTP Proxy for phone-specific applications.RFC 45781364+PANA Authentication Agent.RFC 5192137variableLoST Server.RFC 5223138 CAPWAP Access Controller addresses.RFC 5417139 OPTION-IPv4_Address-MoS.RFC 5678140 OPTION-IPv4_FQDN-MoS.RFC 56781412+SIP UA Configuration Service Domains.RFC 6011142 OPTION-IPv4_Address-ANDSF.RFC 6153143 OPTION-IPv6_Address-ANDSF.RFC 6153144
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149  RFC 3942150 TFTP server address.RFC 5859150 Etherboot.
GRUB configuration path name. 151 status-code. 152 base-time. 153 start-time-of-state. 154 query-start-time. 155 query-end-time. 156 dhcp-state. 157 data-source. 158
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174  RFC 3942175 Etherboot. 176 IP Telephone. 177 Etherboot.
PacketCable and CableHome. 178
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207  RFC 3942208 pxelinux.magic (string) = F1:00:74:7E (241.0.116.126).RFC 5071209 pxelinux.configfile (text).RFC 5071210 pxelinux.pathprefix (text).RFC 5071211 pxelinux.reboottime (unsigned integer 32 bits).RFC 507121218+OPTION_6RD.RFC 5969213 OPTION_V4_ACCESS_DOMAIN.RFC 5986214
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219   220 Subnet Allocation. 221

1+

Virtual Subnet Selection.RFC 6607222
223  RFC 3942224
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254 Private use. 2550End.RFC 2132

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Glossary:

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RFCs:

[RFC 2132] DHCP Options and BOOTP Vendor Extensions.

• Category: Standards Track.
• Updated by:
  RFC 3942, RFC 4361.
• Obsoletes:
  RFC 1533.

[RFC 5417] Control And Provisioning of Wireless Access Points (CAPWAP) Access Controller DHCP Option.

• Category: Standards Track.
• Defines DHCP option 138 (CAPWAP Access Controller addresses).
• Defines DHCPv6 option 52 (CAPWAP Access Controller addresses).

[RFC 6011] Session Initiation Protocol (SIP) User Agent Configuration.

• Category: Informational.
• Defines DHCP option 141 (SIP UA Configuration Service Domains).
• Defines DHCPv6 option 58 (OPTION_SIP_UA_CS_LIST).

[RFC 6607] Virtual Subnet Selection Options for DHCPv4 and DHCPv6.

• Category: Standards Track.
• Defines DHCP option 221 (Virtual Subnet Selection).
• Defines DHCP option 82 suboption 151 (DHCPv4 Virtual Subnet Selection).
• Defines DHCP option 82 suboption 152 (DHCPv4 Virtual Subnet Selection Control).
• Defines DHCPv6 option 68 (Virtual Subnet Selection).
• Updates:
  RFC 3046.