IMP System Announcement (RFC0374)
Original Publication Date: 1972-Jul-01
Included in the Prior Art Database: 2019-Feb-12
Internet Society Requests For Comment (RFCs)
Network Working Group Alex McKenzie RFC #374 BBN NIC 11099 19 July 1972
There are two significant developments in the operation of the network which should be of interest to all sites:
NEW IMP SYSTEM IS RELEASED ! On Tuesday July 18, the new IMP software described in previous RFC’s (#331,#343,#359) was apparently successfully released. We ran from 10:00am on that day until Wednesday afternoon with very few network problems attributable to the new system. We are quite pleased with this performance, and expect to leave the new system up permanently!!
We are, of course, aware that in any system of this size, bugs may crop up at any time, and we solicit the help of the network community in finding them. We also believe that the new system may have a different "feel" to users, both terminal users and Hosts. We urge everyone to have a bit of patience while getting used to any change in the "feel" of the network. On the other hand, PLEASE REPORT ANY SUSPECTED NETWORK MALFUNCTION TO THE NCC AS SOON AS POSSIBLE. Evidence of bugs, guesses as to what went wrong, etc., are always useful in hunting bugs, but don’t let the lack of positive proof delay the reporting of suspected system malfunction. The NCC telephone number is (617) 661-0100. Feel free to call collect!
The one known shortcoming of the new software is the exacerbation of a long-standing TIP software problem. The TIP now often appears to neglect sending an Allocate control message for some active connection, with the effect that the Server-to-User path becomes blocked. We are giving the solution of this problem the highest priority! (Our current data seems to indicate that this problem is most likely to occur when there are several users and when the Server Host is a TENEX system. If you know of other situations where this problem has occurred, please let us know!)
Now that the new system is up, all sites with Model 516 IMPs will be contacted by telephone and asked to reset the switches on their IMPs as follows:
HALT INH - on...