3028 Turbo Statistical Multiplexer
I-22
154001UA
TYPE:
9
from the
CHANNEL PARAMETERS
Menu
PRESS:
RETURN
The terminal displays:
2 0 3 1I -1 2
CHANNEL n FLOW CTL: CURRENTLY: NONE
1: NONE 2: CTS-/CTS+
(ENTER 1-2 <CR> TO CHANGE. <CR> TO RETAIN OLD SETTING.):
CHANNEL ST
CHANNEL ST
CHANNEL ST
CHANNEL ST
CHANNEL STA
A
A
A
ATISTICS
TISTICS
TISTICS
TISTICS
TISTICS
This option delivers a display of the current and peak buffer utilization statistics
and the counts of errors and anomalies encountered for each of the eight channel
ports (whether they are configured as ASYNC or SDLC/HDLC). For ASYNC
channels, the last two statistics (Abort and Bad CRC) will always be set to 0.
Also, channel exceptions mean different things depending on whether the channel
is ASYNC or SDLC/HDLC.
The statistics recorded include:
CURRENT BUFFER UTILIZATION
. This percentage amounts to current
buffer usage for this channel.
PEAK BUFFER UTILIZATION
. This percentage indicates the channel's
buffer usage when all channels together were at the highest total utiliza-
tion since the last statistics reset.
CHANNEL EXCEPTIONS
. This is a count of the number of exceptions which
have occurred since the last statistics reset or since the channel was
configured for SDLC/HDLC (the statistics are reset when the type is
changed from ASYNC to SDLC/HDLC or vice versa).
Exceptions include receiver overrun
Input from a channel could not be serviced in time to preserve the line rate
Transmission underrun
No data available from the link when transmitting a frame onto a channel
Receive buffer not available
A buffer to store the character from the channel before packet assembly
was not available.
ABORTS
. The number of aborts received from the channel.
BAD CRC
s. The number of frames received from the channel containing a
CRC error.