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Network Working Group J. Postel
Request for Comments: 145 UCLA - NMC
NIC: 6739 4 May 1971
Updates: 123
Obsoletes: 127
Initial Connection Protocol Control Commands
The following is my interpretation of the exchange between NCP's
which would be necessary to carry out the Initial Connection Protocol
of RFC #123. (This note corrects an error pointed out by Eric
Harslem of RAND).
Server NCP User NCP
__________ ________
Listen for Connection L RTS, U, L, l
A
STR, L, U, 32 ALL, l , 1, 32
A
Send 32 bits of data
in 1 message on link l
A
(value is S) Receive 32 bits of data
from link l (value is S)
A
CLS, L, U CLS, U, L
STR, S+1, U+1, B STR, U+1, S, B
s u
RTS, S, U+1, l RTS, U, S+1, l
B C
wait for connection wait for connection
ALL, l , m , b ALL, l , m , b
B B B C C C
data sent to link l data sent on link l
C B
data received on link data received on link l
B C
Postel [Page 1]
RFC 145 Initial Connection Protocol 4 May 1971
l , l , and l , are links, m and m are messages allocations, b
A B C B C B
and b are bit allocations, and all other symbols are defined in
C
RFC #123.
[This RFC is also available in .PS and. PDF format.]
[ This RFC was put into machine readable form for entry ]
[ into the online RFC archives by Lorrie Shiota]
Postel [Page 2]