SonicOS 7.0 Objects

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Technical Documentation > SonicOS 7.0 Objects > DHCP Option > Adding DHCP Option Objects > RFC-Defined DHCPV4 Option Numbers

RFC-Defined DHCPV4 Option Numbers

Option Number Name Description
2 Time Offset Time offset in seconds from UTC
3 Routers N/4 router addresses
4 Time Servers N/4 time server addresses
5 Name Servers N/4 IEN-116 server addresses
6 DNS Servers N/4 DNS server addresses
7 Log Servers N/4 logging server addresses
8 Cookie Servers N/4 quote server addresses
9 LPR Servers N/4 printer server addresses
10 Impress Servers N/4 impress server addresses
11 RLP Servers N/4 RLP server addresses
12 Host Name Hostname string, such as (Server Unicast)
13 Boot File Size Size of boot file in 512-byte chunks
14 Merit Dump File Client to dump and name of file to dump to
15 Domain Name DNS domain name of the client
16 Swap Server Swap server addresses
17 Root Path Path name for root disk
18 Extension File Patch name for more BOOTP info
19 IP Layer Forwarding Enable or disable IP forwarding
20 Src route enabler Enable or disable source routing
21 Policy Filter Routing policy filters
22 Maximum DG Reassembly Size Maximum datagram reassembly size
23 Default IP TTL Default IP time-to-live
24 Path MTU Aging Timeout Path MTU aging timeout
25 MTU Plateau Path MTU plateau table
26 Interface MTU Size Interface MTU size
27 All Subnets Are Local All subnets are local
28 Broadcast Address Broadcast address
29 Perform Mask Discovery Perform mask discovery
30 Provide Mask to Others Provide mask to others
31 Perform Router Discovery Perform router discovery
32 Router Solicitation Address Router solicitation address
33 Static Routing Table Static routing table
34 Trailer Encapsulation Trailer encapsulation
35 ARP Cache Timeout ARP cache timeout
36 Ethernet Encapsulation Ethernet encapsulation
37 Default TCP Time to Live Default TCP time to live
38 TCP Keepalive Interval TCP keepalive interval
39 TCP Keepalive Garbage TCP keepalive garbage
40 NIS Domain Name NIS domain name
41 NIS Server Addresses NIS server addresses
42 NTP Servers Addresses NTP servers addresses
43 Vendor Specific Information Vendor specific information
44 NetBIOS Name Server NetBIOS name server
45 NetBIOS Datagram Distribution NetBIOS datagram distribution
46 NetBIOS Node Type NetBIOS node type
47 NetBIOS Scope NetBIOS scope
48 X Window Font Server X window font server
49 X Window Display Manager X window display manager
50 Requested IP address Requested IP address
51 IP Address Lease Time IP address lease time
52 Option Overload Overload sname or file
53 DHCP Message Type DHCP message type
54 DHCP Server Identification DHCP server identification
55 Parameter Request List Parameter request list
56 Message DHCP error message
57 DHCP Maximum Message Size DHCP maximum message size
58 Renew Time Value DHCP renewal (T1) time
59 Rebinding Time Value DHCP rebinding (T2) time
60 Client Identifier Client identifier
61 Client Identifier Client identifier
62 Netware/IP Domain Name Netware/IP domain name
63 Netware/IP sub Options Netware/IP sub options
64 NIS+ V3 Client Domain Name NIS+ V3 client domain name
65 NIS+ V3 Server Address NIS+ V3 server address
66 TFTP Server Name TFTP server name
67 Boot File Name Boot file name
68 Home Agent Addresses Home agent addresses
69 Simple Mail Server Addresses Simple mail server addresses
70 Post Office Server Addresses Post office server addresses
71 Network News Server Addresses Network news server addresses
72 WWW Server Addresses WWW server addresses
73 Finger Server Addresses Finger server addresses
74 Chat Server Addresses Chat server addresses
75 StreetTalk Server Addresses StreetTalk server addresses
76 StreetTalk Directory Assistance Addresses StreetTalk directory assistance addresses
77 User Class Information User class information
78 SLP Directory Agent Directory agent information
79 SLP Service Scope Service location agent scope
80 Rapid Commit Rapid commit
81 FQDN, Fully Qualified Domain Name Fully qualified domain name
82 Relay Agent Information Relay agent information
83 Internet Storage Name Service Internet storage name service
84 Undefined N/A
85 Novell Directory Servers Novell Directory Services servers
86 Novell Directory Server Tree Name Novell Directory Services server tree name
87 Novell Directory Server Context Novell Directory Services server context
88 BCMCS Controller Domain Name List CMCS controller domain name list
89 BCMCS Controller IPv4 Address List BCMCS controller IPv4 address list
90 Authentication Authentication
91- 92 Undefined N/A
93 Client System Client system architecture
94 Client Network Device Interface Client network device interface
95 LDAP Use Lightweight Directory Access Protocol
96 Undefined N/A
97 UUID/GUID-based Client Identifier UUID/GUID-based client identifier
98 Open Group’s User Authentication Open group’s user authentication
99 - 108 Undefined N/A
109 Autonomous System Number Autonomous system number
110 - 111 Undefined N/A
112 NetInfo Parent Server Address NetInfo parent server address
113 NetInfo Parent Server Tag NetInfo parent server tag
114 URL: URL
115 Undefined N/A
116 Auto Configure DHCP auto-configuration
117 Name Service Search Name service search
118 Subnet Collection Subnet selection
119 DNS Domain Search List DNS domain search list
120 SIP Servers DHCP Option SIP servers DHCP option
121 Classless Static Route Option Classless static route option
122 CCC, CableLabs Client Configuration CableLabs client configuration
123 GeoConf GeoConf
124 Vendor-Identifying Vendor Class Vendor-identifying vendor class
125 Vendor Identifying Vendor Specific Vendor-identifying vendor specific
126 - 127 Undefined N/A
128 TFTP Server IP Address TFTP server IP address for IP phone software load
129 Call Server IP Address Call server IP address
130 Discrimination String Discrimination string to identify vendor
131 Remote Statistics Server IP Address Remote statistics server IP address
132 802.1Q VLAN ID IEEE 802.1Q VLAN ID
133 802.1Q L2 Priority IEEE 802.1Q layer 2 priority
134 Diffserv Code Point Diffserv code point for VoIP signalling and media streams
135 HTTP Proxy For Phone Applications HTTP proxy for phone-specific applications
136 - 149 Undefined N/A
150 TFTP Server Address, Etherboot, GRUB Config TFTP server address, Etherboot, GRUB configuration
151 - 174 Undefined N/A
175 Ether Boot Ether Boot
176 IP Telephone IP telephone
177 Ether Boot PacketCable and CableHome Ether Boot PacketCable and CableHome
178 - 207 Undefined N/A
208 pxelinux.magic (string) = 241.0.116.126 pxelinux.magic (string) = 241.0.116.126
209 pxelinux.configfile (text) pxelinux.configfile (text)
210 pxelinux.pathprefix (text) pxelinux.pathprefix (text)
211 pxelinux.reboottime pxelinux.reboottime
212 - 219 Undefined N/A
220 Subnet Allocation Subnet allocation
221 Virtual Subnet Allocation Virtual subnet selection
222 - 223 Undefined N/A
224 - 257 Private Use Private use

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