Chapter 15 Configuring Resilient Packet Ring on the ML-Series Card

Configuring RPR

Creating the Bridge Group and Assigning the Ethernet and SPR Interfaces

The default behavior of the ML-Series cards is that no traffic is bridged over the RPR even with the interfaces enabled. This is in contrast to many Layer 2 switches, including the Cisco Catalyst 6500 and the Cisco Catalyst 7600, which forward VLAN 1 by default. The ML-Series card will not forward any traffic by default, including untagged or VLAN 1 tagged packets.

For any RPR traffic to be bridged on an ML-Series card, a bridge group needs to be created for that traffic. Bridge groups maintain the bridging and forwarding between the interfaces on the ML-Series card and are locally significant. Interfaces not participating in a bridge group cannot forward bridged traffic.

To create a bridge group for RPR, you determine which Ethernet interfaces need to be in the same bridge group, create the bridge group, and associate these interfaces with the bridge group. Then associate the SPR interface with the same bridge group to provide transport across the RPR infrastructure.

Figure 15-6illustrates a bridge group spanning the ML-Series card interfaces, including the SPR virtual interface of RPR.

Figure 15-6 RPR Bridge Group

 

ML-Series Card

 

Ethernet

 

POS 0

Port 0

 

 

 

 

Bridge Group

SPR (RPR)

 

Interface

 

 

Ethernet

 

POS 1

Port 1

 

 

 

134983

 

Caution

All Layer 2 network redundant links (loops) in the connecting network, except the RPR topology, must

 

 

be removed for correct RPR operation. Or if loops exist, you must configure STP/RSTP.

 

 

 

 

 

 

 

To configure the needed interfaces, perform the following procedure, beginning in global configuration

 

 

mode:

 

 

 

 

 

 

 

 

 

 

 

 

Command

Purpose

 

Step 1

 

 

 

 

Router(config)# interface type number

Enters interface configuration mode for the Ethernet

 

 

 

interface joining the bridge group.

 

Step 2

 

 

 

 

Router(config-if)# no shutdown

Enables the interface.

 

Step 3

 

 

 

 

Router(config-if)# bridge-group

Creates the specified bridge group and assigns the bridge

 

 

bridge-group-number

group to the interface. Creating the bridge from the

 

 

 

interface configuration disables STP or RSTP

 

 

 

(spanning-disabled), which is recommended for RPR.

 

Step 4

 

 

 

 

Router(config)# interface spr1

Enters interface configuration mode for the SPR

 

Step 5

 

 

 

 

Router(config-subif)# bridge-group

Associates the SPR interface to the specified bridge

 

 

bridge-group-number

group.

 

 

 

 

 

 

 

 

Cisco ONS 15310-CL, ONS 15310-MA, and ONS 15310-MA SDH Ethernet Card Software Feature and Configuration Guide, R9.1 and R9.2

 

 

 

 

 

78-19415-01

 

 

 

15-13

 

 

 

 

 

 

 

Page 184 Page 186
Page 185
Image 185
Cisco Systems Cisco ONS 15310-MA, ONS 15310-CL manual 15-13
Page 184 Page 186

ONS 15310-CL, ONS 15310-MA, Cisco ONS 15310-MA specifications

Cisco Systems has long been a leader in networking and telecommunications technology, and among its impressive lineup of products, the Cisco ONS 15310 series stands out as an essential solution for optical networking. This series includes models such as the ONS 15310-MA, ONS 15310-CL, and ONS 15310-CA, each designed to meet the diverse needs of service providers and enterprises seeking to enhance their optical transport networks.

The Cisco ONS 15310-MA is an advanced multi-service platform designed for metropolitan area networks. It facilitates the seamless transport of data, voice, and video over optical networks. One of its main features is its ability to support a variety of interfaces, including Ethernet, SONET/SDH, and Wavelength Division Multiplexing (WDM), allowing users to integrate multiple services into a single platform. Additionally, the ONS 15310-MA supports advanced traffic management and Quality of Service (QoS) features to prioritize critical applications and ensure consistent performance.

The ONS 15310-CL variant is tailored for more specific applications, providing enhanced capabilities aimed at delivering carrier-grade services. It features a robust architecture that accommodates high-capacity traffic without compromising reliability. This model emphasizes low power consumption and a compact design, making it suitable for deployment in space-constrained environments. The ONS 15310-CL also supports a wide range of optical interfaces, making it highly flexible for various network configurations.

In terms of technologies, the Cisco ONS 15310 series leverages Optical Transport Network (OTN) capabilities, providing high efficiency and greater bandwidth utilization. OTN technology enables efficient error correction and adds resilience to the network through its built-in protection mechanisms. Furthermore, the series supports seamless integration with existing IP/MPLS networks, creating a cohesive infrastructure as organizations evolve their networking requirements.

One of the defining characteristics of the ONS 15310 series is its focus on scalability. Network operators can start with a modest deployment and gradually expand capacity as demand grows. This adaptability is complemented by Cisco's comprehensive management and monitoring tools, providing operators with real-time insights into network performance and facilitating proactive management.

In conclusion, the Cisco ONS 15310-MA and ONS 15310-CL models represent sophisticated solutions for modern optical networks. With their versatile features, advanced technologies, and robust design, they empower service providers and enterprises to build resilient, high-capacity networks that meet the demands of today’s data-driven world.
Top Page Image Contents