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Network Working Group Request for Comments: 21

V. Cerf UCLA October 17, 1969

At UCLA on October 10, there was a network meeting attended by: SDC John Kreznar Dick Linde Marty Bleier Bob Long UCLA Vint Cerf Steve Crocker Jon Postel Michel Elie

UCSB Ron Stoughton Nancy O'Hara George Gregg

Topics discussed: 1. 2. 3. Revisions to BBN memo 1822 Revisions to NWG/RFC 11 Transmission of multiple control messages

1.

Changes to BBN Memo No. 1822 (underlined) As informally communicated by Dave Wa p. 11 "The IMP and 63 active send a message exist, a "Link the Host, and program can handle up to 63 active transmit links receive links at a time. If the Host attempts to on a new link when 63 active transmit links already Table Full" message will be sent from the IMP to the message will be discarded."

p. 11 "1. Any link that is not used for a period of 26 seconds will have its entry automatically deleted by the IMP program."

[Cerf:

How about deleting only if the transmit link table is full? No, so the not because there is no other way for links to be deleted they would always tend to accumulate. Furthermore, table at one site may be full while another site may be.]

Crocker:

p. 13

"5 Regular with discard." generate traffic will be discarded in the destination will make use of which never actually when it reaches the Host's IMP. The this feature.

This allows IMP systems to reaches any Hosts since it top of the IMP-HOST queue Network Measurement Center

p. 13 Message type 6 is no longer assigned, and message type 10 is really in octal so is actually type 8. Types 9-15 are unassigned. p. 17 Type 10 is really type 8.


2.

Revisions to NWG/RFC 11 This memo has been obsoleted by developments at UCLA and discussions with other nodes. NWG/RFC 22 contains some of the major changes. An updated version of NWG/RFC 11 is forthcoming.

3.

George Gregg of UCSB will publish NWG/RFC 23 concerning the transmission of multiple control messages over control links.