Manuals / Cisco Systems / Computer Equipment / Network Card

Cisco Systems Cisco ONS 15310-MA, ONS 15310-CL CE-MR-6 POS Encapsulation, Framing, and CRC, 17-24

Models: ONS 15310-CL ONS 15310-MA Cisco ONS 15310-MA

1 292
Download 292 pages 38.32 Kb
Page 242
Image 242

Chapter 17 CE-Series Ethernet Cards

CE-MR-6 Ethernet Card

On the CE-MR-6 card, members of a HW-LCAS circuit must be moved to the OOS,OOG (locked, outOfGroup) state before:

•Creating or deleting HW-LCAS circuits.

•Adding or deleting HW-LCAS circuit members.

•Changing the state to OOS,DSBLD.

•Changing the state from OOS,DSBLD to any other state. A traffic hit is seen under the following conditions:

•A hard reset of the card containing the trunk port.

•Trunk port moved to OOS,DSBLD(locked,disabled) state.

•Trunk fiber pull.

•Deletion of members of the HW-LCAS circuit in IG (In Group) state.

Note CE-MR-6 cards display symmetric bandwidth behavior when an AIS, UNEQ, LOP, SF, SD, PLM, ENCAP, OOF, or PDI alarm is raised at the near-end member of the HW-LCAS circuit. The LCAS-SINK-DNU alarm and the RDI condition are raised at the far-end member of the circuit. The LCAS-SINK-DNU alarm changes the member state to outOfGroup (OOG) and hence, the traffic goes down in both directions. For more information about alarms, refer to the “Alarm Troubleshooting” chapter in the Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide or the Cisco ONS 15310-MA SDH Troubleshooting Guide.

Caution Packet losses might occur when an optical fiber is reinserted or when a defect is cleared on members of the HW-LCAS split fiber routed circuits.

CE-MR-6 POS Encapsulation, Framing, and CRC

The CE-MR-6 card uses Cisco EoS LEX (LEX). LEX is the primary encapsulation of ONS Ethernet cards. In this encapsulation, the protocol field is set to the values specified in Internet Engineering Task Force (IETF) Request For Comments (RFC) 1841. The user can provision frame-mapped generic framing procedure (GFP-F) framing (default) or HDLC framing. With GFP-F framing, the user can also configure a 32-bit CRC (the default) or no CRC (none). When LEX is used over GFP-F it is standard Mapped Ethernet over GFP-F according to ITU-T G.7041. HDLC framing provides a set 32-bit CRC. For more details about the interoperability of ONS Ethernet cards, including information on encapsulation, framing, and CRC, see the Chapter 6, “Configuring POS on the ML-Series Card.”

The CE-MR-6 card supports GFP-F null mode. GFP-F CMFs are counted and discarded.

CE-MR-6 Loopback, J1 Path Trace, and SONET Alarms

The CE-MR-6 card supports terminal and facility loopbacks. It also reports SONET alarms and transmits and monitors the J1 Path Trace byte in the same manner as OC-N cards. Support for path termination functions includes:

•H1 and H2 concatenation indication

•C2 signal label

•Bit interleaved parity 3 (BIP-3) generation

 

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

17-24

78-19415-01

Page 241 Page 243
Page 242
Image 242
Cisco Systems Cisco ONS 15310-MA, ONS 15310-CL manual CE-MR-6 POS Encapsulation, Framing, and CRC, 17-24
Page 241 Page 243

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.