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- Network Working Group Ralph Alter
- RFC #305 BBN
- NIC #9078 23 February 1972
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- UNKNOWN HOST NUMBERS
- --------------------
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- In response to a recent minor flurry of confusion, it seems worth
- announcing publicly the fact that new IMPs are tested (almost
- always) on the ARPA Net here at BBN before delivery to the intended
- site. Accordingly, sites should not be surprised to receive RFCs
- or at least RSTs from IMPs or Hosts they thought didn't exist, or
- at least did not exist yet.
-
- Occasionally, IMPs of some given configuration are tested in a
- mode where they announce their IMP number as different from what
- it will be when finally installed. A variety of reasons may create
- such a situation. The latest such occurrence is that a TIP, to be
- installed shortly at ETAC with IMP number 20 (replacing the 316
- IMP now at ETAC which is number 20) was recently tested here with
- McClellan's IMP number (22). (It couldn't be tested with its own
- number since the 316 IMP currently at ETAC is using that number.)
- The result was RSTs from the TIP (Host 3) at IMP 22 - which is
- network address 150 (226 octal or 96 hex).
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- One site asked if their Host tables needed updating. The answer
- is _NO_. We fully expect IMPs tested under these circumstances to be
- ignored or CLS'd by some Hosts. We suggest that Host tables (where
- they are thought to be necessary) be modified only in response to
- official notification from BBN via either an RFC or an update to
- Appendix A of BBN Report #1822.
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- RA/jm
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- [ 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 ]
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