Chapter 17 CE-Series Ethernet Cards

CE-MR-6 Ethernet Card

Table 17-8shows which values are mapped to the priority queue for sample IP ToS settings. (ToS settings span the full 0 to 255 range, but only selected settings are shown in Table 17-8.)

Table 17-8

IP ToS Priority Queue Mappings

 

 

ToS Setting in CTC

ToS Values Sent to Priority Queue

 

 

 

255 (default)

 

None

 

 

 

250

 

251–255

 

 

 

150

 

151–255

 

 

 

100

 

101–255

 

 

 

50

 

51–255

 

 

 

0

 

1–255

 

 

 

For a CoS-tagged frame, the CE-MR-6 can map the eight priorities specified in CoS to priority or best effort. The user can configure a different CoS in CTC at the card-level view under the Provisioning > Ether Ports tabs. Any CoS class higher than the class specified in CTC is mapped to the priority queue, which is the queue geared towards low latency. By default, the CoS is set to 7, which is the highest CoS value. This results in all traffic being treated with equal priority by default.

Table 17-9shows values that are mapped to the priority queue for CoS settings.

Table 17-9

CoS Priority Queue Mappings

 

 

CoS Setting in CTC

CoS Values Sent to Priority Queue

 

 

 

7 (default)

 

None

 

 

 

6

 

7

 

 

 

5

 

6, 7

 

 

 

4

 

5, 6, 7

 

 

 

3

 

4, 5, 6, 7

 

 

 

2

 

3, 4, 5, 6, 7

 

 

 

1

 

2, 3, 4, 5, 6, 7

 

 

 

0

 

1, 2, 3, 4, 5, 6, 7

 

 

 

Ethernet frames without VLAN tagging use ToS-based priority queueing if both ToS and CoS priority queueing is active on the card. The CE-MR-6 card’s ToS setting must be lower than 255 (default) and the CoS setting lower than 7 (default) for CoS and ToS priority queueing to be active. A ToS setting of 255 (default) disables ToS priority queueing, so in this case the CoS setting would be used.

Ethernet frames with VLAN tagging use CoS-based priority queueing if both ToS and CoS are active on the card. The ToS setting is ignored. CoS based priority queueing is disabled if the CoS setting is

7 (default), so in this case the ToS setting would be used.

If the CE-MR-6 card’s ToS setting is 255 (default) and the CoS setting is 7 (default), priority queueing is not active on the card, and data gets sent to the default normal traffic queue. If data is not tagged with a ToS value or a CoS value before it enters the CE-MR-6 card, it also gets sent to the default normal traffic queue.

 

 

 

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

 

 

 

 

17-18

78-19415-01

 

 

 

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Cisco Systems Cisco ONS 15310-MA, ONS 15310-CL manual 17-18, IP ToS Priority Queue Mappings
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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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