RFC 323 (rfc323) - Page 2 of 9
Formation of Network Measurement Group (NMG)
Alternative Format: Original Text Document
RFC 323 Formation of Network Measurement Group March 1972 It should be apparent that HOSTs wishing to co-operate in the support of a HOST discard service should modify their NCP's to throw away all messages received on links 159-174 without sending an error back to the source HOST (no connection will be open on these links). 2. Process Discard Although it was not mentioned at the meeting, C. Kline at UCLA has suggested a PROCESS DISCARD also with some well known socket number. The purpose of this discard routine would be to help us study Process-Process behavior of the network. It would be convenient if all co-operating HOSTs could write a Process Discard program which would simply wait for ICP on some standard socket number. Until a complete survey is made of well- known socket numbers at each HOST, no socket number will be proposed (see RFC #322). 3. NCP Statistics At the meeting it was apparent that several sites have already instrumented their NCP's out of curiosity. In particular, Joel Winett, Lincoln Labs (360/67), has instrumented all connections originated by local TELNET users. He gathers statistics per connection such as: a) Network connect time b) NCP CPU time c) Number of reads or writes on connection d) Time stamps on: first RFC, last RFC, first close, last close. e) Number of messages and bits transmitted f) Log of errors sent or received MULTICS gathers summary statistics on the number of regular (type 0) messages sent and received, and the number of irregular messages (not type 0) sent or received. Cerf
