DHCP过程


附录.DHCP OPTION
以下是部分DHCP OPTION参照表

DHCP OPTION    Meaing
0    None
1    设置子网掩码
2    "Time Offset in Seconds from UTC
3    设置网关
4    N/4 Timeserver addresses
5    N/4 IEN-116 Server addresses
6    设置DNS服务器
7    N/4 Logging Server addresses
8    N/4 Quotes Server addresses
9    N/4 Printer Server addresses
10    N/4 Impress Server addresses
11    N/4 RLP Server addresses
12    设置域名选项。
13    Size of boot file in 512 byte chunks
14    Client to dump and name the file to dump it to
15    设置域名后缀选项。
16    Swap Server address
17    Path name for root disk
18    Path name for more BOOTP info
19    Enable/Disable IP Forwarding
20    Enable/Disable Source Routing
21    Routing Policy Filters
22    Max Datagram Reassembly Size
23    Default IP Time to Live
24    Path MTU Aging Timeout
25    Path MTU Plateau Table
26    Interface MTU Size
27    All Subnets are Local
28    Broadcast Address
29    Perform Mask Discovery
30    Provide Mask to Others
31    Perform Router Discovery
32    Router Solicitation Address
33    设置静态路由选项。该选项中包含一组有分类静态路由（即目的地址的掩码固定为自然掩码，不能划分子网），客户端收到该选项后，将在路由表中添加这些静态路由。如果存在Option121，则忽略该选项。
34    Trailer Encapsulation
35    ARP Cache Timeout
36    Ethernet Encapsulation
37    Default TCP Time to Live
38    TCP Keepalive Interval
39    TCP Keepalive Garbage
40    NIS Domain Name
41    NIS Server Addresses
42    NTP Server Addresses
43    Vendor Specific Information
44    设置NetBios服务器选项。
45    NETBIOS Datagram Distribution
46    设置NetBios节点类型选项。
47    NETBIOS Scope
48    X Window Font Server
49    X Window Display Manager
50    设置请求IP选项。
51    设置IP地址租约时间选项。
52    设置Option附加选项。
53    设置DHCP消息类型。
54    设置服务器标识。
55    设置请求参数列表选项。客户端利用该选项指明需要从服务器获取哪些网络配置参数。该选项内容为客户端请求的参数对应的选项值。
56    DHCP Error Message
57    DHCP Maximum Message Size
58    设置续约T1时间，一般是租期时间的50%。
59    设置续约T2时间。一般是租期时间的87.5%。
60    设置厂商分类信息选项，用于标识DHCP客户端的类型和配置。
61    设置客户端标识选项。
62    NetWare/IP Domain Name
63    NetWare/IP sub Options
64    NIS+ v3 Client Domain Name
65    NIS+ v3 Server Addresses
66    设置TFTP服务器名选项，用来指定为客户端分配的TFTP服务器的域名。
67    设置启动文件名选项，用来指定为客户端分配的启动文件名。
68    Home Agent Addresses
69    Simple Mail Server Addresses
70    Post Office Server Addresses
71    Network News Server Addresses
72    WWW Server Addresses
73    Finger Server Addresses
74    Chat Server Addresses
75    StreetTalk Server Addresses
76    ST Directory Assist. Addresses
77    设置用户类型标识。
78    directory agent information
79    service location agent scope
80    Rapid Commit
81    Fully Qualified Domain Name
82    Relay Agent Information
83    Internet Storage Name Service
85    Novell Directory Services
86    Novell Directory Services
87    Novell Directory Services
90    Authentication
93    Client System Architecture
94    Client Network Device Interface
95    Lightweight Directory Access Protocol
97    UUID/GUID-based Client Identifier
98    Open Group’s User Authentication
100    IEEE 1003.1 TZ String
101    Reference to the TZ Database
108    Number of seconds that DHCPv4 should be disabled
109    DHCPv4 over DHCPv6 Softwire Source Address Option
112    NetInfo Parent Server Address
113    NetInfo Parent Server Tag
114    DHCP Captive-Portal
116    DHCP Auto-Configuration
117    Name Service Search
118    Subnet Selection Option
119    DNS domain search list
120    SIP Servers DHCP Option
121    设置无分类路由选项。该选项中包含一组无分类静态路由（即目的地址的掩码为任意值，可以通过掩码来划分子网），客户端收到该选项后，将在路由表中添加这些静态路由。
122    CableLabs Client Configuration
123    GeoConf Option
124    Vendor-Identifying Vendor Class
125    Vendor-Identifying Vendor-Specific Information
138    CAPWAP Access Controller addresses
139    a series of suboptions
140    a series of suboptions
141    List of domain names to search for SIP User Agent Configuration
142    ANDSF IPv4 Address Option for DHCPv4
143    This option provides a list of URIs for SZTP bootstrap servers
144    Geospatial Location with Uncertainty
145    Forcerenew Nonce Capable
146    Information for selecting RDNSS
147    The name of the peer DOTS agent.
148    N/4 IPv4 addresses of peer DOTS agent(s).
150    设置TFTP服务器地址选项，指定为客户端分配的TFTP服务器的地址。
151    Status code and optional N byte text message describing status.
152    “Absolute time (seconds since Jan 1, 1970) message was sent.”
153    Number of seconds in the past when client entered current state.
154    “Absolute time (seconds since Jan 1, 1970) for beginning of query.”
155    “Absolute time (seconds since Jan 1, 1970) for end of query.”
156    State of IP address.
157    Indicates information came from local or remote server.
158    Includes one or multiple lists of PCP server IP addresses; each list is treated as a separate PCP server.
159    This option is used to configure a set of ports bound to a shared IPv4 address.
160    Previously assigned by [RFC7710]; known to also be used by Polycom.
161    Manufacturer Usage Descriptions

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原文链接：https://blog.csdn.net/a924282761/article/details/122001303