Chapter 17 CE-Series Ethernet Cards

CE-MR-6 Ethernet Card

Figure 17-8

End-to-End Ethernet Link Integrity Support

Ethernet port

 

Ethernet port

 

ONS Node

ONS Node

STS-N

Rx

Tx

Rx

Tx

SONET

115780

Note Some network devices can be configured to ignore a loss of carrier condition. If a device configured to ignore a loss of carrier condition attaches to a CE-MR-6 card at one end, alternative techniques (such as use of Layer 2 or Layer 3 keep-alive messages) are required to route traffic around failures. The response time of such alternate techniques is typically much longer than techniques that use link state as indications of an error condition.

In certain network configurations, the restoration time, for example, after a protection switch can be more than 200 ms. Such disruptions necessitate the link integrity to be initiated at an interval greater than 200 ms. To allow link integrity to be initiated at an interval greater than 200 ms, set the link integrity timer in the range between 200 and 10000 ms, in multiples of 100 ms.

Note The accuracy of the Link Integrity timer is less on CE-MR-6 card compared to the G1000 or CE-1000 cards. The accuracy of Link Integrity timer is within 200 ms for the CE-MR-6 card.

Ethernet Drop and Continue Circuit

The CE-MR-6 card supports Ethernet drop and continue in CCAT circuits. Ethernet drop and continue (unidirectional) circuits have multiple destinations for use in broadcast circuit schemes. In broadcast scenarios, one source transmits traffic to multiple destinations, but traffic is not returned to the source.

Figure 17-9 Unidirectional Drop from a CE-MR-6 card on Node 1 to Nodes 2, 3, and 4

CE-MR-6

(source)

Node 1

ONS 15310

Unidirectional circuit

Unidirectional

Unidirectional

Unidirectional

Drop

CE-MR-6

Drop

CE-MR-6

Drop

CE-MR-6

Node 2

ONS 15310

Node 3

ONS 15310

Node 4

ONS 15310

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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

17-15

 

 

 

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Cisco Systems Cisco ONS 15310-MA, ONS 15310-CL manual Ethernet Drop and Continue Circuit, 17-15
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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.
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