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This is a modified version of the Internet RFC suitable for machine-translating. Original version is available here: RFC247

Network Working Group                        Peggy Karp
Request for Comments:  #247                  MITRE
NIC 7688                                     12 October 1971
Categories:  Policy, Telnet
Related:  #226, 236, 239, 233, 237
Obsoletes:  #226

Proferred Set of Standard Host Names

In RFC #226, BBN's TENEX list of Host names was set up as a strawman set of standard Host names. Comments received since then (an RFC actually generated comments!!!) have influenced me to propose the following general rules for forming Host names.

The Host names will be 8 characters in length. The general form is

<site> '-' <machine>

<site> will be at most 4 characters, formed as follows:

(a) Use the keyword in the site name, if not more than
             four characters, e.g., NASA Ames, Case Western
             Reserve.                    ----  ----

(b) Use the standard acronym, if not more than four characters, e.g., UCLA, RADC, NBS.

(c) If a standard abbreviation exists, use it, e.g., Ill.

(d) If none of the above apply, use the first four letters in the site name, e.g., Burr, Mitr, Harv.

(e) If none of the above is acceptable to the site, the technical liaison should select the site mnemonic.

<machine> will be at most 4 characters of the form <mfg. #> <designator>. Examples of mfg. # are:

IBM 360 2 digit model number IBM 370 3 digit model number PDP 1 - 2 digit model number Burroughs 4 digits CDC 4 digits etc. <designator> will be used when more than one machine of the same type is located at a site (e.g., 2 PDP-10s at MIT, at SRI, and at BBN).
                                                                [Page 1]

RFC #247

Limiting <machine> to 4 characters does not permit distinctions to be made between machines with 4 digit mfg. #s. I expect the situation will be handled in an ad hoc manner by the NIC if it arises.

TIPs are identified as 'TIP' rather than by '316'. If a Host is not to be permanently addressable, the machine is identified as 'TEST'.

A list of Host names, formed according to these rules, is attached. Alternate Host names should be provided, as suggested by Jon Postel (RFC #236). RFC's 206, 233, and 236 present lists with 4-character alternate names. The Technical Liaison should select the alternate name for his site and communicate the selection to the NIC.

The preceding rules and the attached list of Host names are subject to the approval of the NWG. Hereafter, the list will be generated and maintained by the NIC in cooperation with the Technical Liaison at each site, as suggested in RFC #237. Comments should be addressed to Dick Watson.

[ This RFC was put into machine readable form for entry ]

[ into the online RFC archives by BBN Corp. under the ]

[ direction of Alex McKenzie. 12/96 ]
                                                                [Page 2]

RFC #247
Attachment 1
          NETWORK ADDRESS                 STANDARD NAME
          ---------------                 -------------
                   1                      UCLA-7
65 UCLA-91
2 SRI-10NI
66 SRI-10AI
3 UCSB-75 4 UTAH-10 5 BBN-516
69 BBN-10A
133 BBN-10B
6 MIT-645
70 MIT-10DM
134 MIT-10AI
7 RAND-65
71 RAND-10
8 SDC-75 9 HARV-10
73 HARV-1
137 HARV-11
10 LL-67 74 LL-TX2
138 LL-TSP
11 SAIL-10 12 ILL-11 76 ILL-6500 13 CASE-10 14 CMU-10 15 BURR-6500 79 BURR-TEST 16 AMES-67 144 AMES-TIP 145 MITR-TIP
18 RADC-645
19 NBS-11
147 NBS-TIP 148 ETAC-TIP 21 TINK-418 22 MCCL-418 23 USC-44 151 USC-TIP 152 GWC-TIP
25 NCAR-7600
                                                                [Page 3]

RFC #247
Attachment 2
An Implementation Scheme

If the standard Host names are formed according to the proposed rules, the following implementation scheme, suggested by Steve Crocker, can be used.

Map <site> into an 8-bit number, S and map <machine> into an 8-bit number, M, where
S + M = Network Address.

S and M can be selected such that specification of <site> alone could cause a default to the "primary" Host at the site. Note that this scheme depends on a unique <site> designator for each IMP.

Some examples:

If the "primary" Host at UCLA is the 91, let
UCLA -> S = X'41'
7 -> M = X'40'
91 -> M = X'00'
then for
UCLA-7, S + M = X'01' = 1 base 10 UCLA-91,S + M = X'41' = 65 base 10

UCLA alone = X'41' = 65 base 10

If the primary Host at BBN is TENEX System A, let
BBN -> S = X'45' 516 -> M = X'40' 10A -> M = X'00' 10B -> M = X'C0'
then for
BBN-516, S + M = X'05' = 5 base 10 BBN-10A, S + M = X'45' = 69 base 10 BBN-10B, S + M = X'85' = 133 base 10

BBN alone = X'45' = 69 base 10

The primary Host for each IMP would be designated by the site and such information disseminated by the NIC.

[Page 4]

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