Visara Master Console Center Installation - Manual (Page 46)

Visara Master Console Center
© Visara International 2007 46
VTAM 327x console/terminal
A VTAM console/terminal is a 327x type device
Define VTAM consoles in the same way as OS consoles, as described
earlier. This time, instead of updating CONSOLxx, simply update the
VTAM definitions or pull existing coax connections over to the MCC.
This type of session allows a user to log into TSO, CICS, IDMS, IMS,
JOBTRACK, CA-7, etc., from the MCC.
Non-Mainframe System Consoles
Telnet
Consoles, for example, UNIX on an HP-9000, AIX, AS400, can be reached
by telnet.
Advantages? No additional connections on the MCC unit.
Disadvantages? No ability to take the UNIX box to single user mode or
halt the CPU. Loss of IP connectivity (or an intermediary WAN
connection) means loss of telnet to the devices. Also, telnets have an
adverse affect on performance for both the MCC and the monitored host.
RS232
Consoles can also be reached by RS232 connections from a terminal
server using VT100 or 3151 emulation.
Advantages? Ability to drop the UNIX box to single user mode or fully
halt it. The box need not be up and running for RS232 to reach it. The
network is not used for local attachments; however nailed modem and/or
WAN connections may use it for remote attachments. No performance
loss will result to the MCC or monitored host.
Disadvantages? Additional connections required to the MCC unit. The
terminal servers typically use RJ45 connectors, so cables are required to
convert from RS232 to RJ45.