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Release 7.0.0 3DB 19286 ACAA Issue 01
Administer Ethernet Ring Protection (ERP)
The following ERP parameters can be modified when the administrative status of the
ERP Instance is either enabled or disabled:
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• R-APS MEG ID East: [1 to 16]; R-APS MEG ID East identifier is the ID of the
east end of the ring link and must be configured to the same value as the
corresponding R-APS MEG ID West value for the west end of the ring link (ex.
Ring Node 1 east port R-APS MEG ID East and Ring Node 2 west port R-APS
MEG ID West must be provisioned with the same value).
• R-APS MEG ID West: [1 to 16]; R-APS MEG ID West identifier is the ID of the
west end of the ring link and must be configured to the same value as the
corresponding R-APS MEG ID East value for the east end of the ring link (ex.
Ring Node 4 west port R-APS MEG ID West and Ring Node 3 east port R-APS
MEG ID East must be provisioned with the same value).
• RPL Owner: Checked (Yes) or unchecked (No); One RPL Owner is required
for each ERP Instance belonging to the Ring Topology. Only One RPL Owner is
allowed for each ERP Instance belonging to the Ring Topology. If the Ring Node
is configured as RPL Owner, the RPL Port (East or West) must also be
configured.
• RPL Port: East or West; (RPL Port is only configured if RPL Owner is yes)
• ERP Instance Label
• Add VLAN: VLAN IDs associated to the ERP Instance. VLAN IDs associated to
the ERP Instance must satisfy the following system checks:
− must be in the range from 1 to 4080
− must be different from any VLAN ID associated to any other ERP Instance
− must be different from R-APS VLAN ID configured in the ERP Instance
− must be different from R-APS VLAN ID configured in any other ERP
Instance
− must be different from any VLAN ID configured for TMN In-Band
• Wait-to-Restore Time: [1 to 12]; (Wait-to-Restore Time is only configured if RPL
Owner is yes). Time period the RPL Owner waits to restore normal operation
after a fault condition on the ring is corrected. Wait-to-restore is configured from
1 to 12 minutes with a default value of 5 minutes. Applicable only if ring's node
is RPL Owner for at least one instance.
• Guard Timer: [10 to 2000]; (Guard Timer prevents Ethernet Ring Nodes from
receiving outdated R-APS messages. During the duration of Guard Timer, all
received R-APS messages are ignored by ERPS control process. Guard Timer
is configured from 10 to 2000 ms with a default value of 500 ms.)
• Hold Off timer on Ethernet ports: the hold off timer triggers the Ethernet Loss of
Signal alarm. The timer is fixed at 500 ms.
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