Edge-Core ECS4660-28F Management Manual page 529

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Domain Name – Name of a configured ERPS ring.

ID – ERPS ring identifier used in R-APS messages.

Admin Status – Shows whether ERPS is enabled on the switch.

Ver – Shows the ERPS version.

MEG Level – The maintenance entity group (MEG) level providing a

communication channel for ring automatic protection switching (R-APS)

information.

Control VLAN – Shows the Control VLAN ID.

Node 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

Type – Shows node type as None, RPL Owner or RPL Neighbor.

Revertive – Shows if revertive or non-revertive recovery is selected.

W/E – Shows information on the west and east ring port for this node.

West Port – Shows the west ring port for this node.

East Port – Shows the 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

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.

| Basic Administration Protocols

Ethernet Ring Protection Switching

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