Chapter 12 Configuring Quality of Service on the ML-Series Card

QoS on RPR

the QinQ network, the QoS is then implemented based on the IEEE 802.1p bit of the SP tag. The ML-Series cards do not have visibility into the customer CoS, IP precedence, or DSCP values after the packet is double-tagged (because it is beyond the entry point of the QinQ service).

Figure 12-6illustrates the QinQ implementation on the ML-Series card.

Figure 12-6 QinQ Implementation on the ML-Series Card

IEEE 802.1p

(3 bits)

CoS

CFI

 

 

 

 

VLAN ID

Customer VLAN Tag

IEEE 802.1Q Tag

6Destination Address

6Source Address

2

Type=8100

2

Tag Control Information

 

 

2

Type=8100

2Tag Control Information

2Type/Length

42~1500

PAD

 

MAC DATA

 

 

4

FCS

96500

SP CoS bit

(3 bits)

CoS

CFI

 

 

 

 

VLAN ID

Service Provider Tag

QinQ Tag

The ML-Series cards can be used as the IEEE 802.1Q tunneling device for the QinQ network and also provide the option to copy the customer frame’s CoS bit into the CoS bit of the added QinQ tag. This allows the service provider QinQ network to be fully aware of the necessary QoS treatment for each individual customer frame.

Flow Control Pause and QoS

If flow control and port-based policing are both enabled for an interface, flow control handles the bandwidth. If the policer gets noncompliant flow, then the policer drops or demarks the packets using the policer definition of the interface.

Note QoS and policing are not supported on the ML-Series card interface when link aggregation is used.

Note Egress shaping is not supported on the ML-Series cards.

QoS on RPR

For VLAN bridging over RPR, all ML-Series cards on the ring must be configured with the base RPR and RPR QoS configuration. SLA and bridging configurations are only needed at customer RPR access points, where IEEE 802.1Q VLAN CoS is copied to the RPR CoS. This IEEE 802.1Q VLAN CoS copying can be overwritten with a set-cosaction command. The CoS commit rule applies at the RPR ring ingress. Transit RPR ring traffic is classified on CoS only.

If the packet does not have a VLAN header, the RPR CoS for non-VLAN traffic is set using the following rules:

1.The default CoS is 0.

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

12-9

 

 

 

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Cisco Systems ONS 15310-CL, Cisco ONS 15310-MA manual QoS on RPR, Flow Control Pause and QoS, 12-9
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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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