Con®guring SDLC Interfaces

Note: For SDLC interfaces, the Nt' interface number is always the same as the Nt interface number.

CSR Indicates the memory location of the control status register for the SDLC interface.

Self-test passed

Indicates the total number of times the SDLC interface passed its self-test.

Self-test failed

Indicates the total number of times the SDLC interface was unable pass its self-test.

Maintenance failed

Indicates the number of maintenance failures.

The following parameters are displayed only if a cable is connected. The information displayed depends on the cable that is connected. Different parameters are displayed with other cables.

Adapter cable

Indicates the type of adapter cable that the level converter is using.

V.24 circuit

Indicates the circuits being used on the V.24.

Nicknames

Indicates the signals being used on the V.24 circuit.

RS-232

The EIA 232 (RS 232) circuit names.

State Indicates the state of V.24 circuits, signals, and pin assignments (ON or

OFF).

Line speed (con®gured)

Indicates the currently con®gured line speed for the SDLC interface.

Last port reset

Indicates how long ago the port was last reset.

Input frame errors

Indicates the input frame error type (CRC error, too short, aborted, alignment, too long, DMA/FIFO overrun) and the total number of errors that have occurred.

Output frame counters

Indicates the total number of DMA/FIFO overruns and output aborts sent for output frames.

Missed frame

When a frame arrives at the device and there is no buffer available, the hardware drops the frame and increments the missed frame counter.

L & F bits not set

On serial interfaces, the hardware sets input-descriptor information for arriving frames. If the buffer can accept the complete frame upon arrival, the hardware sets both the Last and First bits of the frame, indicating that

the buffer accepted the complete frame. If either of the bits is not set, the packet is dropped, the L & F bits not set counter is incremented, and the

buffer is cleared for reuse.

558MRS V3.2 Software User's Guide

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Image 594
IBM SC30-3681-08 manual RS-232, Line speed congured, Input frame errors, Output frame counters