LevelOne GTL-2691 - Manual (Page 1105)

C HAPTER 38 | ERPS Commands
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show erps statistics This command displays statistics for ERPS protocol messages for all
configured rings, or for a specified ring.
S YNTAX
show erps statistics [domain ring-name]
ring-name - Name of a specific ERPS ring. (Range: 1-32 characters)
C OMMAND M ODE
Privileged Exec
E XAMPLE
Refer to the last example under show erps .
Table 118: show erps statistics - display description
Field Description
Interface Shows the west (W) and east (E) ring ports for this node.
Local SF Local Signal Failure events that have occurred on this ring port.
Local Clear SF Local Clear Signal Failure events that have occurred on this ring port.
SF R-APS SF – Signal Failure messages generated on this ring port. Note that
in the case where link failures are not recognized via loss of signal, ERPS
can also use the Ethernet OAM 802.1ag Continuity Check Messages (CCMs)
to expose the failure to the adjacent nodes.
NR No Request is declared when there are no outstanding conditions (e.g., SF,
etc.) on the node.
NR-RB During a recovery phase, when a failed link is restored and a node detects
Clear SF continually it sends R-APS (NR) and keeps the failed port blocked.
When receiving the R-APS (NR), the RPL owner starts its Wait-To-Restore
(WTR) timer. When that timer expires, it blocks the RPL port and sends
R-APS (NR, RB – R-APS no request, root blocked) messages along both
directions of the ring. Nodes receiving the R-APS (NR, RB) message flush
their learning table, unblock their blocked ports and return to idle state.
EVENT Any R-APS EVENT message.
HEALTH Non-standard health-check messages (displayed when Non-ERPS Device
Protection feature is used.
Sent ERPS PDUs sent by this ring port (not including forwarded messages).
Received ERPS PDUs received by this ring port (not including ignored messages).
Ignored ERPS PDUs ignored by this ring port (e.g., guard timer).