Extreme Networks ExtremeWare 7.3.0, Command Reference Manual

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1682 ExtremeWare Software 7.3.0 Command Reference Guide
PoS Commands
show aps
show aps {<group#>} {detail}
Description
Displays APS group status information.
Syntax Description
Default
By default, the command shows summarized status for the APS group(s).
Usage Guidelines
The user can optionally specify a
group#
parameter, which is an integer in the range [1-65535]. The
group#
identifies a particular APS group for which status is to be shown. Alternatively, you can enter
show aps
with no parameters to obtain status for all configured APS groups. More detailed status
information can be obtained for the APS group(s) by specifying the detail parameter.
Summary status includes the following information for each APS group:
• Provisioned values of all APS configuration parameters, including SONET port numbers and
whether the ports are performing the working or protection line function.
• An indication of whether the line associated with each configured port is active or inactive from an
APS perspective, along with a timestamp indicating when the last APS state change occurred.
• An indication of whether a signal fail (SF) or signal degrade (SD) event due to an excessive bit error
rate (BER) currently exists on the line associated with each configured port, along with a timestamp
indicating when the last such error occurred. (Note that the BER thresholds that cause SF and SD
events may be specified as part of configuring a SONET port.)
• Counts of the number of SF and SD events initiated by each configured port due to an excessive
BER.
• Count of the number of APS authentication failures (that is, a count of the number of received APS
control packets that have been discarded due to authentication failures).
Detailed status includes the information reported in the summary status along with additional status
and management counters. Detailed status only applies to ports performing the protection line function.
Detailed management counters reported for each protection-line port include:
• Automatic line switches initiated by working-line switch
• Automatic line switches initiated by protection-line switch
• Automatic line switches initiated by ADM
• Line switches initiated due to external commands (for example, force or manual switch command)
• Line switches completed successfully
group# Specifies the APS
group#
to which the command applies.
detail Displays more detailed status information for the APS groups.