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- NWG/RFC# 717 JBP 30-JUN-76 16:58 35873
- Assigned Network Numbers
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- Network Working Group Jon Postel
- Request for Comments 717 SRI-ARC
- NIC 35873 1 July 1976
-
- Assigned Network Numbers
-
- This note specifies the numbers assigned to identify networks for use in
- the inter-network protocol experiments. Additional Numbers are assigned
- by Jon Postel [POSTEL@ISIC or (415) 326-6200 x3718].
-
- Assigned Network Numbers
-
- Name Decimal Octal
-
- ---------- ------- -----
-
- BBNRCCnet 3 3
- SanFranPRnet 7 7
- ARPANET 10 12
- BostonPRnet 11 13
-
- Internetwork Header Format
-
- For convenience the current Internetwork protocol header and TCP
- headers are reproduced here:
-
- Octet Bit Use (Width)
-
- --- Beginning of protocol-independent information ---
-
- 0 Destination net (8)
- 1-3 Destination host (24)
- 4 Source net (8)
- 5-7 Source host (24)
- 8-9 Data length in octets (16)
- 10 Header length in octets (8)
- 11 0-3 Format (4)
- This field selects the appropriate gateway processing and is used
- to dispatch the packet to the appropriate protocol module in the
- destination. The following values are defined for this field:
- 0 -- Escape; protocol is specified by a subsequent field
- 1 -- TCP
- 2 -- Secure TCP
- 3-16 -- Not allocated
- 17 -- Cross internet debugging
-
- --- End of protocol-independent information
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- NWG/RFC# 717 JBP 30-JUN-76 16:58 35873
- Assigned Network Numbers
-
-
- --- Beginning of TCP specific information ---
-
- 11 4-7 Protocol version (4)
- 12-15 Sequence number (32)
- 16-17 Window (16)
- 18-20 Control (as before) (24)
- 21-23 Destination port (24)
- 24 Packet label for debugging(8)
- 25-27 Source port (24)
- 28-31 Acknowledgement number (32)
- 32-33 Checksum (16)
- 34- Data
-
- --- End of TCP specific information ---
-
- --- Beginning of short TCP specific information ---
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- 11 4-7 Protocol Version (4)
- 12-25 Sequence number (32)
- 16 Destination KID (8)
- 17 Source KID (8)
- 18-19 Control (no special function field)(16)
- 20- Data
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- --- End of short TCP specific information ---
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