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Network Working Group D. Walden RFC # 548 BBN-NET NIC # 17794 August 16, 1973

               Hosts Using the IMP Going Down Message
  As given in BBN Report 1822 (Specifications for the Interconnection

of a Host and an IMP), IMP to Host message type 2 specifies that the IMP local to the Host is going down; the message further says when the IMP is going down, for how long, and why.

  When the IMP goes down after sending the IMP Going Down message to

the Host, the Host's network users and local users of the network will not, in general, be forewarned unless the Host sends a message to these users. We therefore urge all Hosts to warn their network users and users of the network of impending IMP downs; just logging the received IMP Going Down message on a logging teletype, as many Hosts currently do, seems insufficient.

  Incidentally, please remember that Tuesday mornings from 7 a.m. to 9

a.m. (Eastern Time) are reserved for Network Software Maintenance, as announced in RFC #440.

     [ This RFC was put into machine readable form for entry ]
     [ into the online RFC archives by Alex McKenzie with    ]
     [ support from GTE, formerly BBN Corp.            10/99 ]

Walden [Page 1]

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