Chapter 13
| Basic Administration Protocols
Ethernet Ring Protection Switching
– 470 –
generated R-APS messages is allowed and the reception of all R-APS
messages is allowed.
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Forwarding – The transmission and reception of traffic is allowed;
transmission, reception and forwarding of R-APS messages is allowed.
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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.
Configure Details
◆ Domain Name – Name of a configured ERPS ring. (Range: 1-12 characters)
Service Instances within each ring are based on a unique maintenance
association for the specific users, distinguished by the ring name, maintenance
level, maintenance association’s name, and assigned VLAN. Up to 6 ERPS rings
can be configured on the switch.
◆ Domain ID – ERPS ring identifier used in R-APS messages. (Range: 1-255;
Default: None)
R-APS information is carried in an R-APS PDUs. The last octet of the MAC
address is designated as the Ring ID (01-19-A7-00-00-[Ring ID]). If use of the
default MAC address is disabled for the R-APS Def MAC parameter, then the
Domain ID will be used in R-APS PDUs.
◆ Admin Status – Activates the current ERPS ring. (Default: Disabled)
Before enabling a ring, the global ERPS function should be enabled see (“ERPS
Global Configuration” on page 468), the east and west ring ports configured on
each node, the RPL owner specified, and the control VLAN configured.
Once enabled, the RPL owner node and non-owner node state machines will
start, and the ring will enter idle state if no signal failures are detected.
◆ Version – Specifies compatibility with the following ERPS versions:
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1 - ERPS version 1 based on ITU-T G.8032/Y.1344.
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2 - ERPS version 2 based on ITU-T G.8032/Y.1344 Version 2. (This is the
default setting.)
In addition to the basic features provided by version 1, version 2 also supports:
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Multi-ring/ladder network support
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