CLI Reference Guide-R05

Chapter 18 | ERPS Commands
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This example displays detailed information for the specified ERPS ring.
Console#show erps domain rd1
Domain ID Enabled Ver MEL Ctrl VLAN State Type Revertive
------------ --- ------- --- --- --------- ---------- ------------ ---------
r&d 1 Yes 2 1 1 Idle RPL Owner Yes
Major Domain Node ID R-APS With VC
------------ ----------------- -------------
00-E0-0C-00-00-FD Yes
R-APS Def MAC Propagate TC Non-ERPS Device Protect
------------- ------------ -----------------------
Yes No No
MEL The maintenance entity group (MEG) level providing a communication
channel for ring automatic protection switching (R-APS) information.
Ctrl VLAN Shows the Control VLAN ID.
State Shows the following ERPS states:
Init – The ERPS ring has started but has not yet determined the status of
the ring.
Idle – If all nodes in a ring are in this state, it means that all the links in
the ring are up. This state will switch to protection state if a link failure
occurs.
Protection – If a node in this state, it means that a link failure has
occurred. This state will switch to idle state if all the failed links recover.
Type Shows ERPS node type as None, RPL Owner or RPL Neighbor.
Revertive Shows if revertive or non-revertive recovery is selected.
Interface Information
W/E Shows information on the west and east ring port for this node.
Interface The port or trunk which is configured as a ring port.
Port State The operational state:
Blocking – The transmission and reception of traffic is blocked and the
forwarding of R-APS messages is blocked, but the transmission of
locally generated R-APS messages is allowed and the reception of all R-
APS messages is allowed.
Forwarding – The transmission and reception of traffic is allowed;
transmission, reception and forwarding of R-APS messages is allowed.
Unknown – The interface is not in a known state (includes the domain
being disabled).
Local SF A signal fault generated on a link to the local node.
Local FS Shows if a forced switch command was issued on this interface.
Local MS Shows if a manual switch command was issued on this interface.
MEP The CFM MEP used to monitor the status on this link.
RPL Shows if this node is connected to the RPL.
Table 94: show erps - summary display description (Continued)
Field Description