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____________________________________________________________
Hardware Setup for SysMgr Control Console Session
____________________________________________________________
This brief provides a general discussion of alternative
hardware configurations for the Control Console session in a
LAN or Point-to-Point environment, and serves as a guide to
direct you to the proper manuals. Detailed operation
procedures, such as running NMMGR.PUB.SYS, are not
duplicated here. Slides referenced in this document are
provided at the end of this package.
Using HP OpenView System Manager, a node can be managed via
two types of control sessions; 1) the management session,
and 2) the control console session.
The management session is a software emulation of the system
console. It uses a terminal emulator to access a managed
system over the NS network. After a user session is created
on the managed system, SysMgr's remote node software is
invoked to transform this ordinary user session into a
management session. After this transformation, the user of
this management session can view the console messages and
issue all MPE console commands. Most system management
tasks can be performed via the management session as long as
both MPE and the network are up and running.
The control console session plays an important role when MPE
on the managed system fails or the NS network is not
working. Since the control console session can access the
remote support modem port or the local console port of a
remote system, it can be used to reboot a managed system and
restore the network. The NS network is not involved in this
operation. In order to provide the control console session
in a LAN or Point-to-Point environment, a direct RS232C link
is made between the SysMgr PC and the managed system.
Hardware Configuration for SysMgr PC
____________________________________
The COM ports on the SysMgr PC are used for the control
console session. In theory, four COM ports can be set up
for this use since MicroSoft Windows 3.0 supports four COM
ports. However, the number of copies of the terminal
emulator that can run simultaneously is restricted by the
available memory in your SysMgr PC. If the PC used is not a
standard IBM PC, special SYSTEM.INI file (in C:\WINDOWS)
modification is required to utilize the COM3 and COM4 ports.
The HP Vectra PC falls in this category. The SYSINI2.TXT
(in C:\WINDOWS) provides the best information on this
matter.
Usually the Base address and the interrupt line of COM3 and
COM4 need to be specified. For example, the HP Vectra
RS/25C requires that the following lines be added to the
SYSTEM.INI file.
COM3Base=3E8h
COM4Base=2E8h
COM3Irq=10
COM4Irq=11
** Reference: HP Vectra RS Hardware Technical Reference
Manual (PN 5958-7598).
Please check your PC's hardware documentation for the
appropriate values for your PC . If you experience
difficulties using the COM port, the SYSTEM.INI file is one
of the places to check, but not the first. The first thing
to check should be the cable. The correct cable must be
used and the 24542M is the cable for a Vectra PC with a 9
pin COM port. This cable can be used for either a modem or
DTC connection. Detailed cable information can be found in
the DTC 16 Installation and Service Manual (02340-90001).
Hardware Configuration for MPE-XL managed systems
_________________________________________________
For MPE-XL managed systems, the remote support modem port is
used to access the systems. Since use of this support modem
port and support modem is shared among the HP Predictive
Support operation and Remote Support offered from the HP
Response Center, a hardware configuration change is required
to solve the coexistence issue. The DTC Extended Switching
("Back to Back") technology is used to provide this resource
sharing and should be explained first.
Configuration A in Figure 1 demonstrates the "Back to Back"
DTC configuration. The SysMgr PC is connected with DTC-1
and the managed nodes A and B are both connected to the DTC-
2. Since the DTC-1 and DTC-2 both reside on the same LAN
segment, we can establish a control console session with
either managed node A or B by utilizing DTC-2 as a data
switch. Since the remote support port is used for the DTC-2
connection, the remote support modem can no longer use that
port. However, we can attach the support modem to DTC-2.
With this configuration, the HP remote response center can
dial in to the DTC and "Connect" to the remote support port
of the managed node which requires service. The predictive
support software on the managed node can dial out from that
modem port if the modem port is not in use. The managed
node needs to specify that the modem port is a "nailed port"
via NMMGR. A nailed port on the DTC means that the port has
a designated LDEV number and can be accessed
programmatically by the MPE file system.
Figure 2 shows the hardware setup in detail. If the managed
system already has remote support set up, the two 92219Q
cables should already be in place and only an additional HP
30062-60022 shielded modem cable needs to be added. B0P0
and B0P1 are both 25 PIN connections on a six port modem
board and this board is in DTC slot 0. Based on this
connection, the port B0P0 should be defined as a HOST port
(via HP OpenView DTC manager). The baud rate should match
the modem port speed (usually 2400) and the modem behavior
is DTE. Since it is a HOST port, a HOST NAME is required so
that this port can be addressed with the DTC's CONNECT
command. This port should be enabled at all times.
The port B0P1 should be defined as a standard modem port.
The connecting device is US MODEM (in USA) and the modem
behavior is STANDARD DCE. This port should be enabled and
the ENABLE SWITCHING should be ON. The speed should match
the modem speed. Please refer to the Using HP OpenView DTC
Manager manual (P/N D2355-90001) for detailed information on
setting the HOST port and terminal port.
The AP port on the managed systems also requires setup. The
remote support port speed can be altered via the CM>>CA
command. Under this command, the user can specify an
identifier name so that the managed system will display it
when the remote support port is activated. It provides good
information and is useful for writing connection scripts on
the PC. The remote support port needs to be enabled via the
CM>>ER command. Once the remote port is enabled, it will
remain enabled even after a power failure restart. A local
console user can tell the port status easily from the
console status display. If security becomes an issue, the
user can assign a password for remote port access via the
CM>>ER command.
Any DTC login user can access this B0P0 port via the DTC
CONNECT command. Once the connection is established, the
user can issue a BREAK to obtain console access. After the
required console operation (such as booting the MPE-XL
machine), the user can issue a <L> <<cntl>> K to get back to
the DTC prompt and issue a DTC DISCONNECT command to drop
the "Back to Back" connection. If your DTC login session is
created via a dial-in modem port, be sure a DTC LOGOUT
command is issued before breaking the phone connection.
Failure to do so will result in a predictive support
software failure when a dial out operation is required.
Under this situation, the dial out program receives MPE file
error code 55 during the FOPEN intrinsic call, which means
the device is not available. Enabling the TIME OUT TIMER on
the DTC modem port will reduce the risk of this situation
occurring. The DTC will LOGOUT the user automatically if a
DTC session does not have any connection and the TIME OUT
timer expires. The TIME OUT TIMER and the DTC security list
feature also add to the security of the remote support port.
Please refer to the Using OpenView DTC manager manual (P/N
2355-90001) for more detailed discussions.
If the managed system does not reside on the same LAN
segment, then a modem will be required for the control
console session. The connection used by the control console
session will go through the telephone exchange. Two
configurations are possible for this type of MPE-XL managed
system. If the managed system has a remote support
contract, then it should be setup as shown in Configuration
C of Figure 1. Configuration C is the same as Configuration
A except for the way the PC is connected.
If the MPE-XL managed system is a standalone machine without
a remote support contract, then SysMgr operations can
monopolize the remote support port. Configuration B in
Figure 1 shows this setup in which no DTC is involved.
Figure 3 shows the detailed hardware setup for this
configuration.
However, if more than one managed system is located nearby,
Configuration C still should be considered. Configuration C
allows a single modem (single phone line) to be shared among
multiple managed systems at a single site. Since the usage
of control console session is low, this resource sharing is
reasonable.
Hardware Configuration for MPE-V managed systems
________________________________________________
Except for the Series 37/MICRO, 3000/MICRO and 3000XE, the
remote support port for all MPE-V machines is not designed
to allow remote access without local help (or permission).
Since the SysMgr product requires the remote port to always
be enabled, the modem used by predictive support cannot be
shared with SysMgr. Therefore, every MPE-V managed system
requires an additional modem. For machines other than
37/MICRO, 3000/MICRO and 3000XE, a dedicated local terminal
is also required for redirecting console messages (via the
MPE CONSOLE command) to prevent a system hang.
Three types of configurations have been investigated and
tested. Figure 4 shows the modem setup for series 37/MICRO,
3000/MICRO and 3000XE. For these systems, the modem is
connected to the machine's remote modem port with the key at
position 3 (REMOTE). Once the keyswitch is set at 3, the
modem port is then a Remote Operator Port. The local
console port echoes all commands and responses. The SysMgr
operation mandates that the keyswitch remain at position 3
so a control console session can be established at any time.
This modem setup can be shared with the remote support
service, however, HP predictive support cannot. The
predictive support software requires the keyswitch at
position 1 (the modem port is a regular MPE port), so it can
dial out programmatically. Therefore, a new modem should be
installed just for the HP predictive support service. For
these series of machines, the console message redirection is
not necessary, so no dedicated local terminal is required.
With this configuration, the local user does not lose the
console terminal and can obtain control easily by turning
the keyswitch. A local console terminal is required to boot
the machine after the managed system's power switch is
turned on. The machine POWER FAIL RECOVERY should work if
the battery is in good condition.
Figure 5 shows the setup configuration used for series
64/68/70 machines. For these types of machines, the remote
access port is enabled via both the hardware (keyswitch) and
the software (MER command). Local assistance is always
required for dialing into the remote support port. This
restriction forces SysMgr to access the managed system via
the console port (LDEV 20) as the only valid alternative.
The SysMgr modem should be connected to the console port by
a shielded modem cable 30062-60022 and the existing cable
(one end is 3 PIN connector and another end is 25 PIN
connector).
This setup will disconnect the existing system console
terminal (HP150). If a local user at the remote site wants
to access the local console, the user should disconnect the
modem temporarily and put the console terminal back.
Console terminal presence is required to have a successful
DCU startup test after a system POWER ON. An additional
terminal is also required to redirect console messages
during the time that the modem is not in use. Without this
console traffic redirection, any program requiring console
output will be suspended and the whole system may hang. The
SysMgr PC user should enable the ACK/ENQ handshake to
communicate with these types of machines and should always
issue a CONSOLE command (MPE CI command) to redirect the
console messages before terminating a control console
session.
Figure 6 shows the setup configuration for Series
39/40/42/52 and Series 44/48/58. For these machines, SysMgr
modem hookup looks almost identical to that of the Series
64/68/70. The local console port is used, avoiding the
coexistence issues with the remote support and predictive
support. As with the series 64/68/70, an additional
terminal is required for redirecting the console messages.
For all MPE-V managed systems, if there is an MPE-XL managed
system with a DTC residing nearby, the 30062-60022 cable can
be used to connect the MPE-V system's console port to the
DTC. By doing this, the access modem can be shared and the
DTC security list (password for DTC port) can be used to
prevent unauthorized modem access. This DTC port should be
a HOST port and a HOST name is required. Since the local
console port does not expect any modem signals, the MODEM
BEHAVIOR of this DTC port should be NONE.
It is possible to use a switch box to provide easy switching
between the local console terminal and the SysMgr modem (or
a DTC). However, it will be the customer's own decision to
do this since HP does not support any device other than
terminals for connecting to the local console port. This is
because a switch box may introduce unexpected characters as
console input and once a input is in progress, the console
message display will be blocked. An exceedingly long delay
of console message output will cause a system hang. For
SysMgr to use the local console port, a dedicated terminal
is required to redirect console messages when SysMgr's modem
is not in use. This console message redirecting will
greatly reduce the chance of a system hang due to this
problem.
With this SysMgr, except the Series 64/68/70, all MPE
systems can handle POWER FAIL RECOVERY without help if the
battery is in good condition and power is restored within
the time limit specified by HP. The series 64/68/70
machines send out baud rate/terminal type inquiries during
the DCU power up test and a control console session
connection is required to satisfy these inquiries. Once a
connection is made after a power fail, it may take up to 3
minutes to satisfy the inquiries and complete the DCU test.
Be sure the terminal emulator has ENQ/ACK enabled. If your
PC is not a 386 machine, you should enable the "Display
Functions" to speed up the display. If you fail to do so,
the inquiry will continue forever and the POWER FAIL
RECOVERY will fail.
Setting up the HP Remote Support Modem
______________________________________
An HP certified support modem must be used if it will be
shared with HP remote support or predictive support. In
this situation, the managed system usually has a modem
installed and tested already. Since HP provides the support
modem, a CE should able to set up the modem for you.
Currently, the US service area's response center can
interface with six types of support modems. The type and
default settings of these modems are listed here for your
reference.
HP 50759A
_________
This modem can be set to transfer data at either 1200 or
2400 baud. There are two sets of switches on the
underside of the modem and they are arbitrarily named S
(with 8 switches) and X (with 4 switches). The internal
jumper must be set to "DSR follows OH". One firmware
upgrade kit, 50759-60001, (refer to Service Note 50759A-
02) allows unattended access to the remote console.
Upgraded HP59759A modems are identified by a sticker on
the underside of the modem. Modems upgraded by the
manufacturer will have a serial number greater than
2000000.
Since SysMgr recommends having the support modem
connected to a DTC RS232C modem port (instead of the
remote support port) with the remote support port always
enabled, SysMgr does not require the upgrade kit to
solve this "unattended access" issue. Whether the modem
has been upgraded or not, the following switch settings
should be used.
Switch Position Effect
--------------------------------------------------------
S1 Force DTR Up Allow DTR to be on or off
S2 Verbose/Terse Up Verbose
S3 Result/Codes Up Suppresses responses
S4 Echo Commands Down Disable Echo
S5 Auto Answer Up Enable Auto Answer
S6 DSR/CD Normal Down Force CD/DSR
S7 RTS Force/Normal Up RTS act normal
S8 Command Mode Down Enable Command Mode
X1 CTS Force/Normal Down CTS act normal
X2 DSR follows OH Up DSR high till disconnect
X3 Reliable Mode Up Disable reliable mode
X4 ENQ/ACK pacing Down Disable ENQ/ACK
HP37212A
________
The options on this modem are controlled by switches
inside the modem. This requires you to remove the modem
cover. The configuration switches are located near the
front panel and are numbered S9 through S16 on the PC
card. Set the options to either the CLOSE position
(RIGHT) or the OPEN position (LEFT). Based on
information from the HP response center, S10 should be
CLOSED and all other switches should remain OPEN.
HP37212B
________
This modem can be set to transfer data at either 1200 or
2400 baud. This can be set through the BAUD RATE field
in the Configure Transfer Information Menu of PSCONFIG.
The options on this modem are controlled by switches on
the back panel of the modem. Set options to either the
UP (1) position or the DOWN (0) position. The standard
settings for using this modem for auto-dialing and auto-
answering are S3, S10, S11, S12: UP (1) and all other
switches DOWN.
Hayes Smartmodem 1200
_____________________
The switches that control the options are located inside
the modem behind the front panel. Remove the front
panel by pulling the panel towards you. The switches are
located on the left side. There are two Hayes modems
available: one model with eight switches, another with
ten switches. If the eight-switch model is being used,
ignore the following setting given for the tenth switch.
S4, S6, S8, S10: DOWN and all other switches: UP.
SupportLink
___________
To allow remote console use with the SupportLink modem,
internal jumper W1 (located inside the modem, rear, far
left side) should connect the two pins furthest from the
W1 label, position AA. The standard setting is:
Option 1 : Code 2 (Allow soft option setting)
Option 8 : Code 2 (No forced DTR signal)
Option 15: Code 3 (DSR always high)
Option 16: Code 1 (CD force ON)
Option 22: Dialing method
Set code to 1 for pulse dialing; 2 for tone dialing;
3 for autoselect
Option 24: Code 2
SupportLink II
______________
Connect this modem to the terminal and use the terminal
keyboard to set the options. For remote console use,
the internal jumper (located inside the modem, rear,
left-side) should be set to position AA. The standard
setting is:
Option 1 : Code 2 (Allow soft option setting)
Option 8 : Code 2 (No forced DTR signal)
Option 15: Code 3 (DSR always high)
Option 16: Code 1 (CD force ON)
Option 22: Dialing method
Set code to 1 for autoselect; 2 for tone dialing; 3
for pulse dialing.
The HP Predictive Support XL CE Installation Guide and
Reference Manual (P/N 50779-90002) provides detailed
information on this matter and the HP response center can
provide instructions for setting up these modems and
performing a connection test. Check with your CE if you
require this assistance. Please advise your CE to inform
the HP response center that your managed system has SysMgr
installed, and that the HP response center accesses the
remote support port via a different procedure. If the DTC
"Back to Back" connection method is in use, the HP response
center needs to know the HOST NAME of the DTC port, the
password of the DTC port (if the DTC security list is in
use), the remote port identifier, and the remote port
password (if the AP password is defined).
Setting up an Additional Modem
______________________________
For managed systems that require an additional modem, system
owners can purchase and use their own modem. Based on the
DTC Network Planning and Configuration Guide (P/N D2355-
90012), the following modems are tested and supported for
asynchronous connections with the DTC:
HP 37212A
HP 53016A
Bell 212A
Hayes Smartmodem 1200 or HP 92295A
Hayes Smartmodem 2400 or HP 92205B
Racal-Milgo MPS1222
AJ 1212 AD1
HP 92205J
Other modems may have been tested in other countries;
contact your HP representative for more information. Please
reference the manuals that come with the modem and adapt the
information for the MultiTech 224E7 modem to set up your own
modem.
For the DTC switching solution for MPE-XL machines, we have
tested the MultiTech 244E7 modem in the lab. Two sets of
switches can be found on the underside of the modem and they
are arbitrarily named S (with 8 switches) and X (with 4
switches). Their use is slightly different from the HP
50759A support modem. We used the following settings to
test the DTC switch solution in the lab:
Switch Position Effect
--------------------------------------------------------
S1 Force DTR Up Allow DTR to be on or off
S2 Verbose/Terse Up Verbose
S3 Result/Codes Up Suppresses responses
S4 Echo Commands Down Disable Echo
S5 Auto Answer Up Enable Auto Answer
S6 DSR/CD Normal Down Force CD/DSR
S7 RTS Force/Normal Up RTS act normal
S8 Command Mode Down Enable Command Mode
X1 CTS Force/Normal Down CTS act normal
X2 Dial-up/Lease Up Dial-up line
X3 Dial Default Up Wait-for-Dial-Tone
Dialing
X4 Sync/Async Down Async
The "DSR follows CD/OH" is set to "DSR follows OffHook". In
general, the "ENQ/ACK pacing" should be off. If the system
requires the ENQ/ACK handshake, the handshake is provided
via the terminal emulator. The modem's DTR signal must be
forced for hooking up the modem with the managed system's
local console port (such as in the case of the MPE-V Series
64/68/70).
If the modem is connected with an MPE-XL DTC port and this
modem port is shared with HP predictive support, then extra
caution should be taken. This modem should be set up so
that no message will be issued after the phone connection is
lost. Failure to do so will result in the DTC treating the
message (such as NO CARRIER) as a LOGIN request and
preventing programmatic access of the modem port. This is
why we set up the MultiTech 224E7 modem to suppress command
responses (S3) and disable command echo (S4). The
application that does the auto-dialing can alter the modem
setting via modem commands, but must be sure to restore its
required default setting before program exit.