C
HAPTER
34
| ERPS Commands
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Table 129: show erps - summary display description
Field Description
Node Information
ERPS Status Shows whether ERPS is enabled on the switch.
Number of ERPS Domains Shows the number of ERPS rings configured on the switch.
Domain Displays the name of each ring followed by a brief list of status
information
ID ERPS ring identifier used in R-APS messages.
Enabled Shows if the specified ring is enabled.
Ver Shows the ERPS version.
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.
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