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

Configuring RPR

Table 15-1 Definitions of RPR Frame Fields

PRI

DE

TTL

Type

A three-bit QoS class of service (CoS) field that establishes RPR priority.

Aone-bit field for the discard eligible flag. A nine-bit field for the frame’s time to live.

A field indicating whether the packet is data or control.

MAC Address and VLAN Support

RPR increases the total number of MAC addresses supported because the MAC IDs of packets that pass through an ML-Series card are not recorded by that ML-Series card. The ML-Series card only records the MAC IDs of the packets that are bridged or stripped by that ML-Series card. This allows a greater number of MAC addresses in the collective address tables of the RPR.

VLANs on RPR require less interface configuration than VLANs on STP and RSTP, which require configuration on all the POS interfaces in the ring. RPR VLANs only require configuration on SPR interfaces that bridge or strip packets for that VLAN.

The ML-Series card still has an architectural maximum limit of 255 VLAN/bridge-group per ML-Series card. But because the ML-Series card only needs to maintain the MAC address of directly connected devices, a greater total number of connected devices are allowed on an RPR network.

RPR QoS

The ML-Series card’s RPR relies on the QoS features of the ML-Series card for efficient bandwidth utilization with service level agreement (SLA) support. ML-Series card QoS mechanisms apply to all SONET traffic on the ML-Series card, whether passed-through, bridged, or stripped. For detailed RPR QoS information see the QoS on RPR section of Chapter 15, “Configuring Resilient Packet Ring on the ML-Series Card.”

CTM and RPR

The Cisco Transport Manager (CTM) is an element management system (EMS) designed to integrate into an overall network management system (NMS) and interface with other higher level management tools. CTM supports RPR provisioning on ML-Series cards. For more information, refer to the Cisco Transport Manager User Guide.

Configuring RPR

You need to use both CTC and Cisco IOS to configure RPR for the ML-Series card. CTC is the graphical user interface (GUI) that serves as the enhanced craft tool for specific ONS node operations, including the provisioning of the point-to-point SONET circuits required for RPR. Cisco IOS is used to configure RPR on the ML-Series card and its interfaces.

Successfully creating an RPR requires several consecutive procedures:

1.Connecting the ML-Series Cards with Point-to-Point STS Circuits, page 15-7(CTC or TL1)

2.Configuring CTC Circuits for RPR, page 15-7(CTC or TL1)

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

15-6

78-19415-01

 

 

Page 177 Page 179
Page 178
Image 178
Cisco Systems ONS 15310-MA, ONS 15310-CL manual Configuring RPR, MAC Address and Vlan Support, RPR QoS, CTM and RPR, 15-6
Page 177 Page 179

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