Dynamic Host Configuration Protocol: differenze tra le versioni
Contenuto cancellato Contenuto aggiunto
Riga 21:
* Indirizzo di un server [[tftp]] e nome di un file da caricare per calcolatori che caricano dalla rete l'immagine del [[sistema operativo]].
Nel protocollo c'è comunque il supporto per assegnare tramite DHCP molti altri parametri,
''RFC 1497 Vendor Extensions:''
Data
Tag Name Length Meaning
--- ---- ------ -------
0 Pad Option 0 None
255 End Option 0 None
1 Subnet Mask 4 Subnet Mask Value
2 Time Offset 4 Time Offset in
Seconds from UTC
3 Router N×4 Router addresses
4 Time Server N×4 Timeserver addresses
5 Name Server N×4 IEN-116 Server addresses
6 Domain Server N×4 DNS Server addresses
7 Log Server N×4 Logging Server addresses
8 Quotes Server N×4 Quotes Server addresses
9 LPR Server N×4 Printer Server addresses
10 Impress Server N×4 Impress Server addresses
11 RLP Server N×4 N RLP Server addresses
12 Hostname N Hostname string
13 Boot File Size 2 Size of boot file in 512-octet
blocks
14 Merit Dump File N Client to dump and name
the file to dump it to
15 Domain Name N The DNS ___domain name of the
client
16 Swap Server 4 Swap Server address
17 Root Path N Path name for root disk
18 Extensions File N Path name for more BOOTP info
''IP Layer Parameters per Host:''
19 Forward On/Off 1 Enable/Disable IP Forwarding
20 SrcRte On/Off 1 Enable/Disable Non-Local Source Routing
21 Policy Filter N×8 Non-Local Source Routing Policy Filters
22 Max DG Assembly 2 Max Datagram Reassembly Size
23 Default IP TTL 1 Default IP Time to Live
24 MTU Timeout 4 Path MTU Aging Timeout
25 MTU Plateau N×2 Path MTU Plateau Table
''IP Layer Parameters per Interface:''
26 MTU Interface 2 Interface MTU Size
27 MTU Subnet 1 All Subnets are Local
28 Broadcast Address 4 Broadcast Address
29 Mask Discovery 1 Perform Mask Discovery
30 Mask Supplier 1 Provide Mask to Others
31 Router Discovery 1 Perform Router Discovery
32 Router Request 4 Router Solicitation Address
33 Static Route N×8 Static Routing Table
''Link Layer Parameters per Interface:''
34 Trailers 1 Trailer Encapsulation
35 ARP Timeout 4 ARP Cache Timeout
36 Ethernet 1 Ethernet Encapsulation
''TCP Parameters:''
37 Default TCP TTL 1 Default TCP Time to Live
38 Keepalive Time 4 TCP Keepalive Interval
39 Keepalive Data 1 TCP Keepalive Garbage
''Application and Service Parameters:''
40 NIS Domain N NIS Domain Name
41 NIS Servers N×4 NIS Server Addresses
42 NTP Servers N×4 NTP Server Addresses
43 Vendor Specific N Vendor Specific Information
44 NETBIOS Name Srv N×4 NETBIOS Name Servers
45 NETBIOS Dist Srv N×4 NETBIOS Datagram Distribution
46 NETBIOS Node Type 1 NETBIOS Node Type
47 NETBIOS Scope N NETBIOS Scope
48 X Window Font N×4 X Window Font Server
49 X Window Manager N×4 X Window Display Manager
64 NIS-Domain-Name N NIS+ v3 Client Domain Name
65 NIS-Server-Addr N×4 NIS+ v3 Server Addresses
68 Home-Agent-Addrs N×4 Mobile IP Home Agent Addresses
69 SMTP-Server N×4 Simple Mail Server Addresses
70 POP3-Server N×4 Post Office Server Addresses
71 NNTP-Server N×4 Network News Server Addresses
72 WWW-Server N×4 WWW Server Addresses
73 Finger-Server N×4 Finger Server Addresses
74 IRC-Server N×4 Chat Server Addresses
75 StreetTalk-Server N×4 StreetTalk Server Addresses
76 STDA-Server N×4 ST Directory Assist. Addresses
''DHCP Extensions:''
50 Address Request 4 Requested IP Address
51 Address Time 4 IP Address Lease Time
52 Option Overload 1 Overload "sname" or "file"
53 DHCP Msg Type 1 DHCP Message Type
54 DHCP Server Id 4 DHCP Server Identification
55 Parameter List N Parameter Request List
56 DHCP Message N DHCP Error Message
57 DHCP Max Msg Size 2 DHCP Maximum Message Size
58 Renewal Time 4 DHCP Renewal (T1) Time
59 Rebinding Time 4 DHCP Rebinding (T2) Time
60 Class Id N Vendor Class Identifier
61 Client Id N Client Identifier
66 Server-Name N TFTP Server Name
67 Bootfile-Name N Boot File Name
''Newer extensions:''
62 Netware/IP Domain N Netware/IP Domain Name
63 Netware/IP Option N Netware/IP sub Options
77 User-Class N User Class Information
78 Directory Agent N directory agent information
79 Service Scope N service ___location agent scope
80 Rapid Commit 0 Rapid Commit
81 Client FQDN N Fully Qualified Domain Name
82 Relay Agent Information N Relay Agent Information, RFC 3046
83 iSNS N Internet Storage Name Service
84 REMOVED/Unassigned
85 NDS Servers N Novell Directory Services
86 NDS Tree Name N Novell Directory Services
87 NDS Context N Novell Directory Services
88 BCMCS Controller Domain Name list
89 BCMCS Controller IPv4 address option
90 Authentication N Authentication
91-92 REMOVED/Unassigned
93 Client System N Client System Architecture
94 Client NDI N Client Network Device Interface
95 LDAP N Lightweight Directory Access Protocol
96 REMOVED/Unassigned
97 UUID/GUID N UUID/GUID-based Client Identifier
98 User-Auth N Open Group's User Authentication
99-111 REMOVED/Unassigned
112 Netinfo Address N NetInfo Parent Server Address
113 Netinfo Tag N NetInfo Parent Server Tag
114 URL N URL
115 REMOVED/Unassigned
116 Auto-Config N DHCP Auto-Configuration
117 Name Service Search N Name Service Search
118 Subnet Selection Option 4 Subnet Selection Option
119 Domain Search N DNS ___domain search list
120 SIP Servers DHCP Option N SIP Servers DHCP Option
121 Classless Static Route N Classless Static Route Option
Option
122 CCC N CableLabs Client Configuration
123 GeoConf Option 16 GeoConf Option
124 V-I Vendor Class Vendor-Identifying Vendor Class
125 V-I Vendor-Specific Vendor-Identifying Vendor-Specific
Information Information
126-127 Removed/Unassigned
128 PXE - undefined (vendor specific) (Tentatively Assigned - [[23 June]] [[2005]])
128 Etherboot signature. 6 bytes: E4:45:74:68:00:00
128 DOCSIS "full security" server IP address
128 TFTP Server IP address (for IP Phone software load)
129 PXE - undefined (vendor specific) (Tentatively Assigned - [[23 June]] [[2005]])
129 Kernel options. Variable length string
129 Call Server IP address
130 PXE - undefined (vendor specific) (Tentatively Assigned - [[23 June]] [[2005]])
130 Ethernet interface. Variable length string.
130 Discrimination string (to identify vendor)
131 PXE - undefined (vendor specific) (Tentatively Assigned - [[23 June]] [[2005]])
131 Remote statistics server IP address
132 PXE - undefined (vendor specific) (Tentatively Assigned - [[23 June]] [[2005]])
132 802.1P VLAN ID
133 PXE - undefined (vendor specific) (Tentatively Assigned - [[23 June]] [[2005]])
133 802.1Q L2 Priority
134 PXE - undefined (vendor specific) (Tentatively Assigned - [[23 June]] [[2005]])
134 Diffserv Code Point
135 PXE - undefined (vendor specific) (Tentatively Assigned - [[23 June]] [[2005]])
135 HTTP Proxy for phone-specific applications
136-149 Unassigned
150 TFTP server address (Tentatively Assigned - [[23 June]] [[2005]])
150 Etherboot
150 GRUB configuration path name
151-174 Unassigned
175 Etherboot (Tentatively Assigned - [[23 June]] [[2005]])
176 IP Telephone (Tentatively Assigned - [[23 June]] [[2005]])
177 Etherboot (Tentatively Assigned - [[23 June]] [[2005]])
177 PacketCable and CableHome (replaced by 122)
178-207 Unassigned
208 pxelinux.magic (string) = F1:00:74:7E (241.0.116.126) (Tentatively
Assigned - [[23 June]] [[2005]])
209 pxelinux.configfile (text) (Tentatively Assigned - [[23 June]] [[2005]])
210 pxelinux.pathprefix (text) (Tentatively Assigned - [[23 June]] [[2005]])
211 pxelinux.reboottime (unsigned integer 32 bits) (Tentatively Assigned
- [[23 June]] [[2005]])
212-219 Unassigned
220 Subnet Allocation Option (Tentatively Assigned - [[23 June]] [[2005]])
221 Virtual Subnet Selection Option (Tentatively Assigned - [[23 June]] [[2005]])
222-223 Unassigned
224-254 Private Use
== componenti del protocollo ==
| |||