Display the Port Status Summary Display screen (Figure 3-10 on page 3-26) by selecting 7 on the Service Aids Menu (Figure 3-3 on page 3-5). After selecting this option, enter the number of the port whose status you want to display.
When the 3708 has collected the status information, the Port Status Summary Display screen appears.
When you are finished with the Port Status Summary Display screen, press PF2 to return to the Service Aids Menu.
Refreshing the Port Status Summary Display Screen
If you suSpect that the status of the port has changed while the Port Status Summary is on the screen, refresh the screen by pressing the ENTER key. An updated port status summary appears.
Chapter 3. Gathering More Information
3-25
Interpreting the Port Status Summary Display. SCreen
Figure 3-10 shows an example of the Port Status Summary Display screen.
S137.G COMMUNICATION PROTOCOL ASCII
CHARACTER FRAMING ERROR COUNT OVERRUN ERROR COUNT
Figure 3-10. 3708 Port Status Summary Display Screen Example (S137.0)
The following list describes the fields on the Port Status Summary Display screen.
CD
RTS
CTS
Indicates whether the carrier detect (CD) is currently high (1) or low (0). CD is controlled by the connected device.
Indicates whether the request to send (RTS) is currently high (I) or low (0).
RTS is controlled by the 3708.
Indicates whether the clear to send (CTS) is currently high (1) or low (O)~ CTS is controlled by the connected device.
DTR
Indicates whether the data terminal ready (DTR) is currently high (1) or low (0). DTR is controlled by the 3708.
RI
Indicates whether the ring indicator (RI) is currently high (1) or low (0). RI is controlled by the connected device.
DSR
Indicates whether the data set ready (DSR) is high (1) or low (0). DSR is controlled by the connected device. For information on how the 3708 uses the communication interface signals (CD through DSR), refer to IBM 3708 Description.
PORT STATE
Indicates the current state of the selected port. This field contains one of the following messages:
ENABLED
Indicates that the port is available for communication.
DISABLED
Indicates that the port is inactive.
ENABLE IN PROCESS - WAITING FOR CR
Indicates that the 3708 is waiting for the user to press the CR key on the terminal for that port. Any of the following three port definition parameters may cause this condition:
• LINE SPEED = AUTOBAUD
• PARITY
=
AUTOPARITY• INTERFACE TYPE = 422A.
To complete the port enable process, press the CR key on your terminal.
ENABLE IN PROCESS - WAITING FOR DSR
Indicates that the 3708 is waiting for the DSR indicator on that specific port to become active.
PARITY
Identifies the parity type specified in an ASCII port definition (ODD, EVEN, NONE, MARK, or SPACE). This field does not apply to a port that is defined for an SDLC host. NjA indicates that parity is not applicable in the port in its current state.
PARITY ERROR COUNT
Indicates the number of parity errors (in hexadecimal) detected in data received by this port when the port is defined for an ASCII device. This field does not apply to a port that is defined for an SDLC host.
CHARACTER FRAMING ERROR COUNT
Indicates the number of framing errors (in hexadecimal) that are detected in data that is received by this port when the port is defined for an ASCII device.
This field indicates the number of frames that are received with frame check sequence errors (in hexadecimal) when the port is defined for an SDLC host.
OVERRUN EllROR COUNT
Indicates the number of overrun errors (in hexadecimal) encountered by this port, when the port is defined for an SDLC host. This field does not apply to a port that is defined for an ASCII device.
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LINE SPEED IN BPS
Indicates the line speed specifie~ for the port in its definition.
If the port is defined for an ASCII device and the port is set for autobaud and the port is not enabled, AUTO is displayed;, If the port is defined for an SDLC host port usingextemal clocking, EXT is displayed. N/A indicates that line speed is not applicable for the port in its current state.
LINE TYPE
Indicates the type of line (LEASED or SWITCHED) specified for the port in its definition.
INTERFACE TYPE
Indicates the interface type (232C or 422A) specified for the port in its definition.
COMMUNICATION PROTOCOL
Indicates the type of protocol used by the port. SDLC is used to indicate an.
SDLe host port definition and ASCII indicates an ASCII port definition.
Chapter 4. Handling Microcode Problems
This chapter describes 3708 microcode problems and how to gather detailed information about them.
The types of microcode problems that are covered in this chapter are as follows:
Task abends A task abend typically causes an individual port to fail while other 'ports continue to operate. The failed port returns to operation
when the 3708 starts again.
Restart error A restart error causes the 3708 to automatically start again during operation, ending all current communication sessions.
Restart loop A restart loop is a special type of restart error that causes the 3708 to become trapped in its restart sequence.
Each of these errors requires separate procedures for gathering problem information.
Before doing the procedures in this chapter, do the following:
1. Search the symptom index in Chapter 2, "Using Symptoms to Solve a
Problem." If the symptom is listed, verify that the index lists the 3708 microcode as a possible cause.
2. Display alerts for the problem as described in "Using the Alert Display Screen"
on page 3-6.
See Appendix A, "3708 Alert Messages" for the recommended action for the alerts. If the alerts indicate a microcode problem, the appendix refers you to a specific section in this chapter.
3. Become familiar with the procedures for each symptom as described in this chapter, so you can be ready to gather information when the problem occurs again.