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Configuring ERP
Sample Ethernet Ring Protection Configuration
OmniSwitch AOS Release 6 Network Configuration Guide
September 2009
page 14-19
Sample Ethernet Ring Protection Configuration
This section provides an example network configuration in which ERP is configured on network switches 
to maintain a loop-free topology. In addition, a tutorial is also included that provides steps on how to 
configure the example network topology using the Command Line Interface (CLI).
Example ERP Overview
The following diagram shows a five-switch ERP ring configuration:
Configuring the sample ERP ring network shown in the above diagram involves the following tasks:
Configure an ERP ring with ERP ring ID 1 on all switches in the network.
Define an ERP Service VLAN as VLAN 10 on all switches.
Set the Management Entity Group (MEG) level to 2 for all switches. 
Switch C is the RPL owner; configure the port connected to the Ring Protection Link as a RPL port.
Enable the configured ERP ring.
Assign VLANs 11-20 as a protected VLANs to ERP ring 1.
Use the default settings for the guard timer and WTR timer values. These values can be adjusted as 
necessary. 
Switch D
Switch D
Switch C
Switch C
Switch E
Switch E
Switch A
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Switch B
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