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CHAPTER
14-1
Cisco ONS 15310-CL and Cisco ONS 15310-MA Ethernet Card Software Feature and Configuration Guide R8.5
78-18133-01
14
Configuring Resilient Packet Ring on the
ML-Series Card
Note The terms "Unidirectional Path Switched Ring" and "UPSR" may appear in Cisco literature. These terms
do not refer to using Cisco ONS 15xxx products in a unidirectional path switched ring configuration.
Rather, these terms, as well as "Path Protected Mesh Network" and "PPMN," refer generally to Cisco's
path protection feature, which may be used in any topological network configuration. Cisco does not
recommend using its path protection feature in any particular topological network configuration.
This chapter describes how to configure resilient packet ring (RPR) for the ML-Series card.
This chapter contains the following major sections:
• Understanding RPR, page 14-1
• Configuring RPR, page 14-6
• Monitoring and Verifying RPR, page 14-16
• Add an ML-Series Card into an RPR, page 14-17
• Delete an ML-Series Card from an RPR, page 14-21
• Cisco Proprietary RPR KeepAlive, page 14-25
• Configuring Cisco Proprietary RPR KeepAlive, page 14-25
• Monitoring Cisco Propretary RPR KeepAlive, page 14-25
• Cisco Proprietary RPR Shortest Path, page 14-25|
• Configuring Shortest Path and Topology Discovery, page 14-25
• Monitoring and Verifying Shortest Path andTopolgy Discovery, page 14-26
• Redundant Interconnect, page 14-26
Understanding RPR
RPR is a new MAC protocol operating at the Layer 2 level. It is well suited for transporting Ethernet
over a SONET ring topology and enables multiple ML-Series cards to become one functional network
segment or shared packet ring (SPR). RPR overcomes the limitations of earlier schemes, such as IEEE
802.1D Spanning Tree Protocol (STP), IEEE 802.1W Rapid Spanning Tree Protocol (RSTP), and