On Sun, Jul 23, 2000 at 04:39:01PM -0400, http account wrote:
>
> ------------------------------------------------------------
> Date: Sun Jul 23 16:39:00 2000, Shift: 08:00-16:00
> Supervisor: FV, with: DO,ZIS
> Log book#3 pages 52 - 59
>
> Shift Summary:
> ------------------------------------------------------------
> 2.Few achivements:
> - BRAHVO still has a problem with H1,C2,H2,TOFW mainframe.
The HV controls problem is caused by a catastrophic failure of the
terminal server on the MRS platform ("tsir"). This terminal
server provides access to all the L1440 HV mailframes (H1, H2, C1)
and the L1458 mainframes (TPC and RICH).
In short, "tsir" refuses all incoming connections, so brahvo cannot
connect to the mainframes. However, unexplainably, both L1458 connections
are still working, so we still have control over the TPC high voltages.
The terminal server also refuses connections to the management port,
so it is impossible to login and reboot it from "within". Attempts
to cycle the power on the terminal server using the magic Radio Shack
device failed, too (the power does not go out).
The next step is to either cycle the power on the MRS platform (using
the big circuit breaker in the FEH) or do a controlled access to the IR
to directly cycle the power on the terminal server (and also
verify that the Radio Shack widget is configured correctly).
--
Konstantin Olchanski
Physics Department, Brookhaven National Laboratory, Long Island, New York
olchansk@bnl.gov
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