rfc900.txt
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TXT
1,985 行
131 Unassigned [JBP]
132-223 Reserved [JBP]
224-241 Unassigned [JBP]
243 Survey Measurement [9,AV]
245 LINK [14,RDB2]
247-255 Unassigned [JBP]
Reynolds & Postel [Page 14]
Assigned Numbers RFC 900
Autonomous System Numbers
ASSIGNED AUTONOMOUS SYSTEM NUMBERS
The Exterior Gateway Protocol (EGP) [85,84] specifies that groups of
gateways may form autonomous systems. The EGP provides a 16-bit
field for identifying such systems. The values of this field are
registered here.
Autonomous System Numbers:
Decimal Name References
------- ---- ----------
0 Reserved [JBP]
1 The BBN Gateways [MB]
2 DCN-AS [DLM1]
3 The MIT Gateways [LM8]
4 ISI-AS [PXK]
5 Symbolics [CH2]
6 HIS-Multics [BIM,RK1]
7 UK-MOD [RNM1]
8 RICE-AS [PGM]
9 CMU-ROUTER [MA]
10-65534 Unassigned [JBP]
65535 Reserved [JBP]
Reynolds & Postel [Page 15]
Assigned Numbers RFC 900
ARPANET Logical Addresses
ASSIGNED ARPANET LOGICAL ADDRESSES
The ARPANET facility for "logical addressing" is described in RFC 878
[49]. A portion of the possible logical addresses are reseved for
standard uses.
There are 49,152 possible logical host addresses. Of these, 256 are
reserved for assignment to well-known functions. Assignments for
well-known functions are made by Joyce Reynolds. Assignments for
other logical host addresses are made by the NIC.
Logical Address Assignments:
Decimal Description References
------- ----------- ----------
0 Reserved [JBP]
1 The BBN Gateways [MB]
2-255 Unassigned [JBP]
256 Reserved [JBP]
Reynolds & Postel [Page 16]
Assigned Numbers RFC 900
ARPANET Link Numbers
ASSIGNED ARPANET LINK NUMBERS
The word "link" here refers to a field in the original ARPANET
Host/IMP interface leader. The link was originally defined as an
8-bit field. Later specifications defined this field as the
"message-id" with a length of 12 bits. The name link now refers to
the high order 8 bits of this 12-bit message-id field. The Host/IMP
interface is defined in BBN Report 1822 [7].
The low-order 4 bits of the message-id field are called the sub-link.
Unless explicitly specified otherwise for a particular protocol,
there is no sender to receiver significance to the sub-link. The
sender may use the sub-link in any way he chooses (it is returned in
the RFNM by the destination IMP), the receiver should ignore the
sub-link.
Link Assignments:
Decimal Description References
------- ----------- ----------
0 Reserved [JBP]
1-149 Unassigned [JBP]
150 Xerox NS IDP [97,LLG]
151 Unassigned [JBP]
152 PARC Universal Protocol [11,HGM]
153 TIP Status Reporting [JGH]
154 TIP Accounting [JGH]
155 Internet Protocol [regular] [31,71,JBP]
156-158 Internet Protocol [experimental] [31,71,JBP]
159 Figleaf Link [JBW1]
160-195 Unassigned [JBP]
196-247 Experimental Protocols [JBP]
248-255 Network Maintenance [JGH]
Reynolds & Postel [Page 17]
Assigned Numbers RFC 900
IEEE 802 SAP Numbers
IEEE 802 SAP NUMBERS OF INTEREST
Many of the networks of all classes are IEEE 802 Networks. These
systems use a Service Access Point field in much the same way the
ARPANET uses the "link" field.
Assignments:
Service Access Point Description References
-------------------- ----------- ----------
decimal binary
96 01100000 DOD IP [31,70,JBP]
Reynolds & Postel [Page 18]
Assigned Numbers RFC 900
Ethernet Numbers
ETHERNET NUMBERS OF INTEREST
Many of the networks of all classes are Ethernets (10Mb) or
Experimental Ethernets (3Mb). These systems use a message "type"
field in much the same way the ARPANET uses the "link" field.
Assignments:
Ethernet Exp. Ethernet Description References
------------- ------------- ----------- ----------
decimal Hex decimal octal
512 0200 512 1000 XEROX PUP [1,HGM]
1536 0600 1536 3000 XEROX NS IDP [97,LLG]
2048 0800 513 1001 DOD IP [131,71,JBP]
2049 0801 - - X.75 Internet [LLG]
2050 0802 - - NBS Internet [LLG]
2051 0803 - - ECMA Internet [LLG]
2052 0804 - - Chaosnet [LLG]
2053 0805 - - X.25 Level 3 [LLG]
2054 0806 - - Address Res [55,DCP1]
2076 081C - - Symbolics Private [DCP1]
32771 8003 - - Cronus VLN [91,DCT]
32772 8004 - - Cronus Direct [91,DCT]
32774 8006 - - Nestar [LLG]
36864 9000 - - Loopback [LLG]
The standard for transmission of IP datagrams over Ethernets and
Experimental Ethernets is specified in RFC 894 [41] and RFC 895 [57]
respectively.
Reynolds & Postel [Page 19]
Assigned Numbers RFC 900
Address Resolution Protocol
ASSIGNED ADDRESS RESOLUTION PROTOCOL PARAMETERS
The Address Resolution Protocol (ARP) specified in RFC 826 [55] has
several parameters. The assigned values for these parameters are
listed here.
Assignments:
Operation Code (op)
1 REQUEST
2 REPLY
Hardware Type (hrd)
1 ETHERNET (10Mb)
2 EXPERIMENTAL ETHERNET (3Mb)
Protocol Type (pro)
Use the same codes as listed in the section called "Ethernet
Numbers of Interest".
Reynolds & Postel [Page 20]
Assigned Numbers RFC 900
Public Data Network Numbers
ASSIGNED PUBLIC DATA NETWORK NUMBERS
One of the Internet Class A Networks is the international system of
Public Data Networks. This section lists the mapping between the
Internet Addresses and the Public Data Network Addresses (X.121).
Assignments:
Internet Public Data Net Description References
--------------- ----------------- ----------- ----------
014.000.000.000 Reserved [JBP]
014.000.000.001 3110-317-00035 00 PURDUE-TN [CAK]
014.000.000.002 3110-608-00027 00 UWISC-TN [CAK]
014.000.000.003 3110-302-00024 00 UDEL-TN [CAK]
014.000.000.004 2342-192-00149 23 UCL-VTEST [PK]
014.000.000.005 2342-192-00300 23 UCL-TG [PK]
014.000.000.006 2342-192-00300 25 UK-SATNET [PK]
014.000.000.007 3110-608-00024 00 UWISC-IBM [MHS1]
014.000.000.008 3110-213-00045 00 RAND-TN [MO2]
014.000.000.009 2342-192-00300 23 UCL-CS [PK]
014.000.000.010 3110-617-00025 00 BBN-VAN-GW [JD21]
014.000.000.011 2405-015-50300 00 CHALMERS [UXB]
014.000.000.012 3110-713-00165 00 RICE [PAM6]
014.000.000.013 3110-415-00261 00 DECWRL [PAM6]
014.000.000.014 3110-408-00051 00 IBM-SJ [SA1]
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