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List of Figures

  • Figure 1 Initial network configuration
  • Figure 2 A typical message from a 24-bit machine
  • Figure 3 A typical socket
  • Figure 4 The relationship between sockets and processes
  • Figure 5 A typical TELNET dialog.

Underlined characters are those types by the user.

                            SRI
_____
/ \
| XDS |
| 940 |
\_____/
|
+----------+
| IMP |
+----------+
/ | \
/ | \
/ | \ +----+ _____
/ | \ | I | / \
______ +----+ / | \| M |--| DEC |
/ \ | I |/ | | P | | PDP-10|
| IBM |---| M | | +----+ \_____/
| 360/75 | | P |\ |
\______/ +----+ \ | UTAH
\ |
UCSB \ |
+----------+
| IMP |
+----------+
|
___|___
/ \
| XDS |
|(sigma)-7|
\_______/
UCLA

Figure 1: Initial network configuration

|<------------ 24bits ----------->|
| |
+---------------------------------+
| |
| Leader (32 bits) |
| __________________|
| | 100 --- ----0 |<----16 bits of marking
+--------------+------------------+
| |
| |
| Text of messages (96 bits) |
| |
+------------------------+--------+
| 100----- ----0|
+-------^----------------+
|
|______16 bits of padding added
by the interface

Figure 2: A typical message from a 24-bit machine

       24                    8          8
+----------------------+-----------+----------+
| User Number | | |
+----------------------+-----------+----------+
| |___AEN
|
|___HOST number

Figure 3: A typical socket

           |<--- connection --->|
+---------+ +---------+
| | link | |
| process |--(|--------------|)--| process |
| | ^ ^ | |
+---------+ | | +---------+
| |
send socket receive socket

Figure 4: The relationship between sockets and processes


Note: This RFC was put into machine readable form for entry into the online RFC archives by Lorrie Shiota 08/00.