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1 |
Login to the VLNC4x at one of the nodes in the ERP.
Result:
The User EXEC prompt [(ALU switching)>] displays.
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2 |
From the User EXEC prompt, enter enable to enter the Privileged EXEC mode.
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3 |
Make sure that the ring is in the idle state.
From the Privileged EXEC mode, enter show erp <name>, where <name> is the name of the ERP you are provisioning.
Example: (ALU Switching) # show erp ring1.
Verify that Current State is “No Request (RPL blocked).”
Result:
The command displays ERP settings and status.
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4 |
Shut down the link that will be the new RPL.
Login to the node connected to the new RPL.
From the User EXEC prompt, enter enable to enter the Privileged EXEC mode.
From the Privileged EXEC mode, enter configure to enter the Global Config mode.
Enter interface <port>, where <port> is the AID of the port associated with the link to be shut down.
From the Interface Config mode, enter shutdown.
Example: (ALU Switching) (interface d2-1)# shutdown.
Result:
The node signals SF and unblocks the ring protection link (RPL).
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5 |
Login to the existing RPL Owner node.
From the User EXEC prompt, enter enable to enter the Privileged EXEC mode.
From the Privileged EXEC mode, enter configure to enter the Global Config mode.
From the Global Config prompt, enter erp <name>, where name is the name of the ERP.
Example: (ALU Switching) (Config)# erp ring1.
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6 |
Make the existing RPL port not be the RPL.
From the Erp Config mode, enter no ring-protection-link <port> to remove the RPL. For example: (ALU Switching) (Config erp ring1)# no ring-protection-link d2-1.
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7 |
Login to the node that is the new RPL Owner.
From the User EXEC prompt, enter enable to enter the Privileged EXEC mode.
From the Privileged EXEC mode, enter configure to enter the Global Config mode.
From the Global Config prompt, enter erp <name>, where name is the name of the ERP.
Example: (ALU Switching) (Config)# erp ring1.
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8 |
Designate the port for the new Ring Protection Link (RPL) for the ring. This command also makes this node the RPL Owner.
From the Erp Config mode, enter ring-protection-link <port> where <port> is the AID of the port associated with the chosen ring protection link.
Example: (ALU Switching)(Config erp ring1)# ring-protection-link d2-1.
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9 |
If required, configure the Wait-to-Restore (WTR) time for the ERP.
From the Erp Config mode, enter wait-to-restore <time>, where <time> is in the range of 1-12 minutes, default 5.
The WTR time is the length of time after a failure recovers before the ERP reverts to the default configuration (with the RPL blocked). WTR may only be provisioned at the RPL Owner node. The ITU-T G.8032 standard requires the WTR time to be from 5 to 12 minutes.
Example: (ALU Switching)(Config erp ring1)# wait-to-restore 7.
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10 |
Exit down to the Global Config mode.
Enter interface <port>, where <port> is the AID of the port associated with the RPL.
From the Interface Config mode, enter no shutdown.
Example: (ALU Switching) (interface d2-1)# no shutdown.
End of steps |
Overview