Check for power from wall socket
Check setting of voltage switch
Check circuit breaker
Replace power cord. power up and monitor display
No
No
Replace the DEC MicroServer
MKV88-1955
Figure 4 No Decimal Point on Display or Fan Does Not Turn
Attach Ethernet loopback connector to DEC MicroServer
Move connector to end of transceiver cable
Power up DEC MicroServer
Possible transceiver or other Ethernet problem
DEMSA MAINTENANCE AIDS
Yes Replace the
Yes
DEC MicroServer
Replace the Ethernet cable
MKV88-1954
Figure 5 Display Reads "E"
DEMSA MAINTENANCE AIDS
Check DEC MicroServer information in load
host database
Chp.ck service enabled on host's circuit
Yes
Use NCP to check the Ethernet
Possible fault on the Ethernet transceiver
No
Change the information in the database
Enable Service on host's circuit
Power up the DEC MicroServer
Ethernet hardware fault
Connect the
DEMSA MAINTENANCE AIDS
Attach loopback MicroServer software Problem Solving information. If the fault persists, escalate the problem using your usual procedure.
Replace the
DEMSA MAINTENANCE AIDS
Using the Network Control Program (NCP) from a Load Host
Using NCP requires access to the SYSTEM account or one with similar privileges on one of the DEC MicroServer's load hosts. This must be coordinated with the customer. Load hosts can be either VAX/VMS or ULTRIX systems. Each system has its own login procedure and uses a different command to start NCP.
VAX/VMS
At the system prompt, enter:
$ RUN SYS$SYSTEM:NCP ULTRIX
At the system prompt, enter:
%ncp
All ULTRIX commands are in lowercase.
Once NCP is running, the tasks listed in Table 4 can be performed. Lowercase words in the commands are to be replaced with the appropriate name or value:
"server name" = the node name of the DEC MicroServer
"server circuit" = the service circuit of the DEC MicroServer other = another node on the Ethernet
For more detailed information on these tasks, refer to the DEC MicroServer Pocket Service Guide.
DEMSA MAINTENANCE AIDS
Table 4 NCP Quick Reference
Task Commands to Use
Check service circuit on the load host
Check DEC MicroServer information on the load host Check continuity of Ethernet link to DEC MicroServer Load the DEC MicroServer
Connect the remote console Get information from a running DEC MicroServer Perform data loopback on the synchronous lines
SHOW NODE "server name" CHAR SHOW CIRCUIT "server circuit" CHAR SHOW NODE "server name" CHAR SET NODE server
LOOP NODE "server name"
TRIGGER NODE "server name"
LOAD NODE "server name"
CONNECT NODE "server name"
TELL "server name" SHOW COUNTER, KNOW LINES, EXECUTOR CHARACTERIST, ETC TELL "server name LOOP CIRCUIT
CIR-ID (not X.25)
TELL "server name" LOOP LINE*
LINE-ID (X.25 only)
* Must first set line state "service" and controller loopbackj controller normal for internal or external respectively.
DEMSA MAINTENANCE AIDS
Using the Network Control Program (NCP) from a Remote Console 1. Connect the DEC MicroServer remote console:
On VAX/VMS use the NCP command:
CONNECT NODE "server name"
SERVICE PASSWORD password
NOTE
The SERVICE PASSWORD is only needed where a value/character has been used. The system manager has this information.
where "server name" is the node name of DEC MicroServer, and password is the service passwon of the DEC MicroServer.
On ULTRIX, leave NCP by typing CTRL/D and enter the ULTRIX command:
ccp -n "server name" -p password
where "server name" is the node name of the DEC MicroServer, and password is the service password of the DEC MicroServer.
2. Halt the software before testing the DEC MicroServer or using any of the remote console commands 3. Enter remote console commands. Table 5 lists the most common remote console commands and thei
syntax. More detailed information is available in the DEC MicroServer Pocket Service Guide.
4. When finished with the remote console, type CTRL/D.
DEMSA MAINTENANCE AIDS
Table 5 Summary of Remote Console Commands
Command Name Parameter Qualifier
BOOT None None
CLEAR COUNTERS None None
PASSWORD SOFTWARE
DUMP None None
HALT None None
HELP MORE None None
TEST
LOAD software_id None
SET PASSWORD hex-password None
SOFTWARE software_id
SHOW ADDRESS None None
ALL COUNTERS ERRORS FIRMWARE HALT MCHECK PASSWORD SOFTWARE STATE VERSION
TEST CABLE_TYPE None /ALL
DATA_LOOPBACK /CHn
MODEM-SIGNAL /INTERNAL
/LOCAL /MANUAL /REMOTE
START address None
DEMSA MAINTENANCE AIDS
Reconfiguring the Customer's System
It may be possible to use another of the DEC MicroServer ports. This depends on:
• The number of lines used
• The synchronous line speed(s) used
• The synchronous port(s) used
Ports are numbered 0, 1, 2, and 3 (above the port). All four ports can support a line speed of 64 Kbits/s, but specific ports (0 and 1) are used for higher speeds. If the port(s) that support the higher speed are faulty, the DEC MicroServer cannot be reconfigured.
The number of lines used and the line speeds are determined by the software. Refer to the software documentation for information on the permitted line and speed configurations to determine if the customer's system can be reconfigured.
If the system is reconfigured, inform the customer so that any system-dependent configuration files, and the configuration card, can be changed. Then reboot the system.
DEMWA INSTALLATION
DEMWA ETHERNET MICROWAVE ADAPTER General Description
The DEMWA Ethernet microwave adapter is a hardware device that provides a communications link between a LAN Bridge 100 and full-duplex microwave equipment. The DEMWA is a DELNI local network interconnect that has been modified to work within the METROWAVE bridge configuration. The DEMWA causes the microwave link to appear as a normal LAN.
ANTENNA
TX CONTROLLER
H4000
MKV88·1246
Figure 1 DEMWA Ethernet Microwave Adapter in a METROWAVE Bridge Unit
DEMWA Configurations
The DEMWA microwave adapter is specifically designed to be installed in the METROWAVE bridge system and is only intended to work in that system. The DEMWA microwave adapter is the component that physically connects the LAN Bridge 100 and the microwave equipment. It is recommended that the 2 m transceiver cable (BNE4D-02) be used to interconnect the DEMWA and the LAN Bridge 100.