Dynamic Host Configuration Protocol (DHCP) and Bootstrap Protocol (BOOTP) Parameters

Last Updated2019-03-19Note

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Registries included below

BOOTP Vendor Extensions and DHCP Options

Registration Procedure(s)

Reference[RFC2939]Note

Available Formats

CSV

Tag Name Data Length Meaning Reference 
0Pad0None[RFC2132]
1Subnet Mask4Subnet Mask Value[RFC2132]
2Time Offset4Time Offset in Seconds from UTC (note: deprecated by 100 and 101)[RFC2132]
3RouterNN/4 Router addresses[RFC2132]
4Time ServerNN/4 Timeserver addresses[RFC2132]
5Name ServerNN/4 IEN-116 Server addresses[RFC2132]
6Domain ServerNN/4 DNS Server addresses[RFC2132]
7Log ServerNN/4 Logging Server addresses[RFC2132]
8Quotes ServerNN/4 Quotes Server addresses[RFC2132]
9LPR ServerNN/4 Printer Server addresses[RFC2132]
10Impress ServerNN/4 Impress Server addresses[RFC2132]
11RLP ServerNN/4 RLP Server addresses[RFC2132]
12HostnameNHostname string[RFC2132]
13Boot File Size2Size of boot file in 512 byte chunks[RFC2132]
14Merit Dump FileNClient to dump and name the file to dump it to[RFC2132]
15Domain NameNThe DNS domain name of the client[RFC2132]
16Swap ServerNSwap Server address[RFC2132]
17Root PathNPath name for root disk[RFC2132]
18Extension FileNPath name for more BOOTP info[RFC2132]
19Forward On/Off1Enable/Disable IP Forwarding[RFC2132]
20SrcRte On/Off1Enable/Disable Source Routing[RFC2132]
21Policy FilterNRouting Policy Filters[RFC2132]
22Max DG Assembly2Max Datagram Reassembly Size[RFC2132]
23Default IP TTL1Default IP Time to Live[RFC2132]
24MTU Timeout4Path MTU Aging Timeout[RFC2132]
25MTU PlateauNPath MTU Plateau Table[RFC2132]
26MTU Interface2Interface MTU Size[RFC2132]
27MTU Subnet1All Subnets are Local[RFC2132]
28Broadcast Address4Broadcast Address[RFC2132]
29Mask Discovery1Perform Mask Discovery[RFC2132]
30Mask Supplier1Provide Mask to Others[RFC2132]
31Router Discovery1Perform Router Discovery[RFC2132]
32Router Request4Router Solicitation Address[RFC2132]
33Static RouteNStatic Routing Table[RFC2132]
34Trailers1Trailer Encapsulation[RFC2132]
35ARP Timeout4ARP Cache Timeout[RFC2132]
36Ethernet1Ethernet Encapsulation[RFC2132]
37Default TCP TTL1Default TCP Time to Live[RFC2132]
38Keepalive Time4TCP Keepalive Interval[RFC2132]
39Keepalive Data1TCP Keepalive Garbage[RFC2132]
40NIS DomainNNIS Domain Name[RFC2132]
41NIS ServersNNIS Server Addresses[RFC2132]
42NTP ServersNNTP Server Addresses[RFC2132]
43Vendor SpecificNVendor Specific Information[RFC2132]
44NETBIOS Name SrvNNETBIOS Name Servers[RFC2132]
45NETBIOS Dist SrvNNETBIOS Datagram Distribution[RFC2132]
46NETBIOS Node Type1NETBIOS Node Type[RFC2132]
47NETBIOS ScopeNNETBIOS Scope[RFC2132]
48X Window FontNX Window Font Server[RFC2132]
49X Window ManagerNX Window Display Manager[RFC2132]
50Address Request4Requested IP Address[RFC2132]
51Address Time4IP Address Lease Time[RFC2132]
52Overload1Overload “sname” or “file”[RFC2132]
53DHCP Msg Type1DHCP Message Type[RFC2132]
54DHCP Server Id4DHCP Server Identification[RFC2132]
55Parameter ListNParameter Request List[RFC2132]
56DHCP MessageNDHCP Error Message[RFC2132]
57DHCP Max Msg Size2DHCP Maximum Message Size[RFC2132]
58Renewal Time4DHCP Renewal (T1) Time[RFC2132]
59Rebinding Time4DHCP Rebinding (T2) Time[RFC2132]
60Class IdNClass Identifier[RFC2132]
61Client IdNClient Identifier[RFC2132]
62NetWare/IP DomainNNetWare/IP Domain Name[RFC2242]
63NetWare/IP OptionNNetWare/IP sub Options[RFC2242]
64NIS-Domain-NameNNIS+ v3 Client Domain Name[RFC2132]
65NIS-Server-AddrNNIS+ v3 Server Addresses[RFC2132]
66Server-NameNTFTP Server Name[RFC2132]
67Bootfile-NameNBoot File Name[RFC2132]
68Home-Agent-AddrsNHome Agent Addresses[RFC2132]
69SMTP-ServerNSimple Mail Server Addresses[RFC2132]
70POP3-ServerNPost Office Server Addresses[RFC2132]
71NNTP-ServerNNetwork News Server Addresses[RFC2132]
72WWW-ServerNWWW Server Addresses[RFC2132]
73Finger-ServerNFinger Server Addresses[RFC2132]
74IRC-ServerNChat Server Addresses[RFC2132]
75StreetTalk-ServerNStreetTalk Server Addresses[RFC2132]
76STDA-ServerNST Directory Assist. Addresses[RFC2132]
77User-ClassNUser Class Information[RFC3004]
78Directory AgentNdirectory agent information[RFC2610]
79Service ScopeNservice location agent scope[RFC2610]
80Rapid Commit0Rapid Commit[RFC4039]
81Client FQDNNFully Qualified Domain Name[RFC4702]
82Relay Agent InformationNRelay Agent Information[RFC3046]
83iSNSNInternet Storage Name Service[RFC4174]
84REMOVED/Unassigned[RFC3679]
85NDS ServersNNovell Directory Services[RFC2241]
86NDS Tree NameNNovell Directory Services[RFC2241]
87NDS ContextNNovell Directory Services[RFC2241]
88BCMCS Controller Domain Name list[RFC4280]
89BCMCS Controller IPv4 address option[RFC4280]
90AuthenticationNAuthentication[RFC3118]
91client-last-transaction-time option[RFC4388]
92associated-ip option[RFC4388]
93Client SystemNClient System Architecture[RFC4578]
94Client NDINClient Network Device Interface[RFC4578]
95LDAPNLightweight Directory Access Protocol[RFC3679]
96REMOVED/Unassigned[RFC3679]
97UUID/GUIDNUUID/GUID-based Client Identifier[RFC4578]
98User-AuthNOpen Group’s User Authentication[RFC2485]
99GEOCONF_CIVIC[RFC4776]
100PCodeNIEEE 1003.1 TZ String[RFC4833]
101TCodeNReference to the TZ Database[RFC4833]
102-107REMOVED/Unassigned[RFC3679]
108REMOVED/Unassigned[RFC3679]
109OPTION_DHCP4O6_S46_SADDR16DHCPv4 over DHCPv6 Softwire Source Address Option[RFC8539]
110REMOVED/Unassigned[RFC3679]
111Unassigned[RFC3679]
112Netinfo AddressNNetInfo Parent Server Address[RFC3679]
113Netinfo TagNNetInfo Parent Server Tag[RFC3679]
114URLNURL[RFC3679]
115REMOVED/Unassigned[RFC3679]
116Auto-ConfigNDHCP Auto-Configuration[RFC2563]
117Name Service SearchNName Service Search[RFC2937]
118Subnet Selection Option4Subnet Selection Option[RFC3011]
119Domain SearchNDNS domain search list[RFC3397]
120SIP Servers DHCP OptionNSIP Servers DHCP Option[RFC3361]
121Classless Static Route OptionNClassless Static Route Option[RFC3442]
122CCCNCableLabs Client Configuration[RFC3495]
123GeoConf Option16GeoConf Option[RFC6225]
124V-I Vendor ClassVendor-Identifying Vendor Class[RFC3925]
125V-I Vendor-Specific InformationVendor-Identifying Vendor-Specific Information[RFC3925]
126Removed/Unassigned[RFC3679]
127Removed/Unassigned[RFC3679]
128PXE – undefined (vendor specific)[RFC4578]
128Etherboot signature. 6 bytes: E4:45:74:68:00:00
128DOCSIS “full security” server IP address
128TFTP Server IP address (for IP Phone software load)
129PXE – undefined (vendor specific)[RFC4578]
129Kernel options. Variable length string
129Call Server IP address
130PXE – undefined (vendor specific)[RFC4578]
130Ethernet interface. Variable length string.
130Discrimination string (to identify vendor)
131PXE – undefined (vendor specific)[RFC4578]
131Remote statistics server IP address
132PXE – undefined (vendor specific)[RFC4578]
132IEEE 802.1Q VLAN ID
133PXE – undefined (vendor specific)[RFC4578]
133IEEE 802.1D/p Layer 2 Priority
134PXE – undefined (vendor specific)[RFC4578]
134Diffserv Code Point (DSCP) for VoIP signalling and media streams
135PXE – undefined (vendor specific)[RFC4578]
135HTTP Proxy for phone-specific applications
136OPTION_PANA_AGENT[RFC5192]
137OPTION_V4_LOST[RFC5223]
138OPTION_CAPWAP_AC_V4NCAPWAP Access Controller addresses[RFC5417]
139OPTION-IPv4_Address-MoSNa series of suboptions[RFC5678]
140OPTION-IPv4_FQDN-MoSNa series of suboptions[RFC5678]
141SIP UA Configuration Service DomainsNList of domain names to search for SIP User Agent Configuration[RFC6011]
142OPTION-IPv4_Address-ANDSFNANDSF IPv4 Address Option for DHCPv4[RFC6153]
143OPTION_V4_SZTP_REDIRECTNThis option provides a list of URIs for SZTP bootstrap servers[RFC-ietf-netconf-zerotouch-29]
144GeoLoc16Geospatial Location with Uncertainty[RFC6225]
145FORCERENEW_NONCE_CAPABLE1Forcerenew Nonce Capable[RFC6704]
146RDNSS SelectionNInformation for selecting RDNSS[RFC6731]
147-149Unassigned[RFC3942]
150TFTP server address[RFC5859]
150Etherboot
150GRUB configuration path name
151status-codeN+1Status code and optional N byte text message describing status.[RFC6926]
152base-time4Absolute time (seconds since Jan 1, 1970) message was sent.[RFC6926]
153start-time-of-state4Number of seconds in the past when client entered current state.[RFC6926]
154query-start-time4Absolute time (seconds since Jan 1, 1970) for beginning of query.[RFC6926]
155query-end-time4Absolute time (seconds since Jan 1, 1970) for end of query.[RFC6926]
156dhcp-state1State of IP address.[RFC6926]
157data-source1Indicates information came from local or remote server.[RFC6926]
158OPTION_V4_PCP_SERVERVariable; the minimum length is 5.Includes one or multiple lists of PCP server IP addresses; each list is treated as a separate PCP server.[RFC7291]
159OPTION_V4_PORTPARAMS4This option is used to configure a set of ports bound to a shared IPv4 address.[RFC7618]
160DHCP Captive-PortalNDHCP Captive-Portal[RFC7710]
161OPTION_MUD_URL_V4N (variable)Manufacturer Usage Descriptions[RFC8520]
162-174Unassigned[RFC3942]
175Etherboot (Tentatively Assigned – 2005-06-23)
176IP Telephone (Tentatively Assigned – 2005-06-23)
177Etherboot (Tentatively Assigned – 2005-06-23)
177PacketCable and CableHome (replaced by 122)
178-207Unassigned[RFC3942]
208PXELINUX Magic4magic string = F1:00:74:7E[RFC5071][Deprecated]
209Configuration FileNConfiguration file[RFC5071]
210Path PrefixNPath Prefix Option[RFC5071]
211Reboot Time4Reboot Time[RFC5071]
212OPTION_6RD18 + NOPTION_6RD with N/4 6rd BR addresses[RFC5969]
213OPTION_V4_ACCESS_DOMAINNAccess Network Domain Name[RFC5986]
214-219Unassigned
220Subnet Allocation OptionNSubnet Allocation Option[RFC6656]
221Virtual Subnet Selection (VSS) Option[RFC6607]
222-223Unassigned[RFC3942]
224-254Reserved (Private Use)
255End0None[RFC2132]

DHCP Message Type 53 Values

Registration Procedure(s)

Reference[RFC2939]Available Formats

CSV

Value Message Type Reference 
1DHCPDISCOVER[RFC2132]
2DHCPOFFER[RFC2132]
3DHCPREQUEST[RFC2132]
4DHCPDECLINE[RFC2132]
5DHCPACK[RFC2132]
6DHCPNAK[RFC2132]
7DHCPRELEASE[RFC2132]
8DHCPINFORM[RFC2132]
9DHCPFORCERENEW[RFC3203]
10DHCPLEASEQUERY[RFC4388]
11DHCPLEASEUNASSIGNED[RFC4388]
12DHCPLEASEUNKNOWN[RFC4388]
13DHCPLEASEACTIVE[RFC4388]
14DHCPBULKLEASEQUERY[RFC6926]
15DHCPLEASEQUERYDONE[RFC6926]
16DHCPACTIVELEASEQUERY[RFC7724]
17DHCPLEASEQUERYSTATUS[RFC7724]
18DHCPTLS[RFC7724]

NetWare/IP Option Type 63 Sub-Option Codes

Registration Procedure(s)

Reference[RFC2242]Available Formats

CSV

Value Message Type Reference 
1NWIP_DOES_NOT_EXIST[RFC2242]
2NWIP_EXIST_IN_OPTIONS_AREA[RFC2242]
3NWIP_EXIST_IN_SNAME_FILE[RFC2242]
4NWIP_EXIST_BUT_TOO_BIG[RFC2242]
5NSQ_BROADCAST[RFC2242]
6PREFERRED_DSS[RFC2242]
7NEAREST_NWIP_SERVER[RFC2242]
8AUTORETRIES[RFC2242]
9AUTORETRY_SECS[RFC2242]
10NWIP_1_1[RFC2242]
11PRIMARY_DSS[RFC2242]
12-255Unassigned

DHCP Cablelabs Client Configuration Option Type 122 Sub-Option Codes

Registration Procedure(s)

Reference[RFC3495]Available Formats

CSV

Code Sub-Option Description Reference 
1TSP’s Primary DHCP Server Address[RFC3495]
2TSP’s Secondary DHCP Server Address[RFC3495]
3TSP’s Provisioning Server Address[RFC3495]
4TSP’s AS-REQ/AS-REP Backoff and Retry[RFC3495]
5TSP’s AP-REQ/AP-REP Backoff and Retry[RFC3495]
6TSP’s Kerberos Realm Name[RFC3495]
7TSP’s Ticket Granting Server Utilization[RFC3495]
8TSP’s Provisioning Timer Value[RFC3495]
9TSP’s Security Ticket Control[RFC3594]
10KDC Server Address[RFC3634]
11-255Unassigned

DHCP Status Code Type 151 Values

Registration Procedure(s)

Reference[RFC6926]Available Formats

CSV

Status-Code Name Reference 
0Success[RFC6926]
1UnspecFail[RFC6926]
2QueryTerminated[RFC6926]
3MalformedQuery[RFC6926]
4NotAllowed[RFC6926]
5DataMissing[RFC7724]
6ConnectionActive[RFC7724]
7CatchUpComplete[RFC7724]
8TLSConnectionRefused[RFC7724]
9-255Unassigned

DHCP State Type 156 Values

Registration Procedure(s)

Reference[RFC6926]Available Formats

CSV

State Name Reference 
0Reserved[RFC6926]
1AVAILABLE[RFC6926]
2ACTIVE[RFC6926]
3EXPIRED[RFC6926]
4RELEASED[RFC6926]
5ABANDONED[RFC6926]
6RESET[RFC6926]
7REMOTE[RFC6926]
8TRANSITIONING[RFC6926]
9-255Unassigned

Altitude Type Registry

Registration Procedure(s)

Reference[RFC6225]Available Formats

CSV

Type Altitude Field Description Reference 
0No known altitude[RFC6225]
1Altitude in meters[RFC6225]
2Altitude in floors[RFC6225]
3-15Unassigned

Datum Registry

Registration Procedure(s)

Reference[RFC6225]Available Formats

CSV

Datum Datum Field Description Reference 
0Reserved[RFC6225]
1Vertical datum WGS 84 defined by EPSG CRS Code 4327[RFC6225]
2Vertical datum NAD83 defined by EPSG CRS Code 4269 with North American Vertical Datum of 1988 (NAVD88)[RFC6225]
3Vertical datum NAD83 defined by EPSG CRS Code 4269 with Mean Lower Low Water (MLLW) as associated vertical datum[RFC6225]
4-7Unassigned

GeoLoc Option Version Registry

Registration Procedure(s)

Reference[RFC6225]Available Formats

CSV

Version Description Reference 
0Reserved[RFC6225]
1Implementations utilizing uncertainty parameters for both DHCPv4 and DHCPv6 GeoLoc options[RFC6225]
2-3Unassigned

CableLabs Client Configuration Option Ticket Control Mask Bit Definitions

Registration Procedure(s)

Reference[RFC3594]Available Formats

CSV

Bit Description Reference 
0the PacketCable Provisioning Server used by the CCD.[RFC3594]
1the group of all PacketCable Call Management Servers used by the CCD.[RFC3594]
2-15Reserved and MUST be set to 0.

DHCP Relay Agent Sub-Option Codes

Registration Procedure(s)

Reference[RFC3046]Available Formats

CSV

Code Sub-Option Description Reference 
1Agent Circuit ID Sub-option[RFC3046]
2Agent Remote ID Sub-option[RFC3046]
3Sub-option 3 is reserved and should not be assigned at this time; proprietary and incompatible usages of this sub-option value have been seen limited deployment.[Ralph_Droms]
4DOCSIS Device Class Suboption[RFC3256]
5Link selection Sub-option[RFC3527]
6Subscriber-ID Suboption[RFC3993]
7RADIUS Attributes Sub-option[RFC4014]
8Authentication Suboption[RFC4030]
9Vendor-Specific Information Suboption[RFC4243]
10Relay Agent Flags[RFC5010]
11Server Identifier Override Suboption[RFC5107]
12Relay Agent Identifier Sub-option[RFC6925]
13Access-Technology-Type Sub-option[RFC7839]
14Access-Network-Name Sub-option[RFC7839]
15Access-Point-Name Sub-option[RFC7839]
16Access-Point-BSSID Sub-option[RFC7839]
17Operator-Identifier Sub-option[RFC7839]
18Operator-Realm Sub-option[RFC7839]
19DHCPv4 Relay Source Port Sub-Option[RFC8357]
20-150Unassigned
151DHCPv4 Virtual Subnet Selection Sub-Option[RFC6607]
152DHCPv4 Virtual Subnet Selection Control Sub-Option[RFC6607]

Authentication Suboption (value 8) – Protocol identifier values

Registration Procedure(s)

Reference[RFC3118]Available Formats

CSV

Value Protocol Reference 
0DHCPv4 Configuration Token[RFC3118, Section 4]
1DHCPv4 Delayed Authentication[RFC3118, Section 5]
2DHCPv6 Delayed Authentication (Obsolete)[RFC8415]
3DHCPv6 Reconfigure Key Authentication[RFC8415]
4-254Unassigned
255Reserved[RFC3118]

Authentication Suboption (value 8) – Algorithm identifier values

Registration Procedure(s)

Reference[RFC4030]Available Formats

CSV

Value Algorithm Reference 
0Reserved[RFC4030]
1HMAC-SHA1 keyed hash[RFC4030]

Authentication Suboption (value 8) – Replay Detection Method (RDM) identifier values

Registration Procedure(s)

Reference[RFC4030]Available Formats

CSV

Value Description Reference 
0Reserved[RFC4030]
1use of a monotonically increasing counter value[RFC4030]

IEEE 802.21 Service Type (MoS DHCPv4 Address and FQDN Sub-Options)

Registration Procedure(s)

Reference[RFC5678]Available Formats

CSV

Value Name Reference 
0Reserved[RFC5678]
1IS[RFC5678]
2CS[RFC5678]
3ES[RFC5678]
4-254Unassigned
255Reserved[RFC5678]

NTP Time Source Suboptions

Registration Procedure(s)

Reference[RFC5908]Note

VSS Type Options

Registration Procedure(s)

Reference[RFC6607]Available Formats

CSV

Type Name Reference 
0Network Virtual Terminal (NVT) ASCII VPN identifier[RFC6607]
1RFC2685 VPN-ID[RFC2685][RFC6607]
2-253Unassigned
254All VPNs (wildcard)[RFC6926]
255Global, default VPN[RFC6607]

People

ID Name Contact URI Last Updated 
[Ralph_Droms]Ralph Dromsmailto:rdroms&cisco.com2001-01
分类: OPENWRT

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