Chapter 2 Alarm Troubleshooting

2.7.55 ENCAP-MISMATCH-P

Clear the ELWBATVG Alarm

Step 1 The problem is external to the ONS 15310-CL or ONS 15310-MA. Troubleshoot the power source supplying the battery leads.

Step 2 If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/techsupport for more information or call Cisco TAC (1-800-553-2447) in order to report a Service-Affecting (SA) problem.

2.7.55 ENCAP-MISMATCH-P

Default Severity: Critical (CR), Service-Affecting (SA)

SONET Logical Object: STSTRM

The Encapsulation C2 Byte Mismatch Path alarm applies to the ML-100T-8 Ethernet card. It occurs when the first three following conditions are met and one of the last two is false:

•The received C2 byte is not 0x00 (unequipped).

•The received C2 byte is not a PDI value.

•The received C2 does not match the expected C2.

•The expected C2 byte is not 0x01 (equipped unspecified).

•The received C2 byte is not 0x01 (equipped unspecified).

(This is in contrast to the “PLM-P” alarm on page 2-115, which must meet all five criteria.) For an ENCAP-MISMATCH-P alarm to be raised, there is a mismatch between the received and expected C2 byte, with either the expected byte or received byte value being 0x01.

For example, an ENCAP-MISMATCH-P alarm is raised if a circuit created between two ML-100T-8 cards has generic framing procedure (GFP) framing provisioned on one end and high-level data link control (HDLC) framing with LEX encapsulation provisioned on the other. The GFP-framing card transmits and expects a C2 byte of 0x1B, while the HDLC-framing card transmits and expects a C2 byte of 0x01.

A mismatch between the transmit and receive ports on any of the following parameters can cause the alarm:

•Mode (HDLC, GFP-F)

•Encapsulation (LEX, HDLC, PPP)

•CRC size (16 or 32)

•Scrambling state (on or off)

This alarm is demoted by PLM-P or PLM-V.

Note By default, an ENCAP-MISMATCH-P alarm causes an ML-100T-8 card data link to go down. This behavior can be modified using the Cisco IOS command line interface (CLI) command no pos trigger defect encap.

Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, R7.0

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Cisco Systems ONS 15310-MA, ONS 15310-CL manual Encap-Mismatch-P, Clear the Elwbatvg Alarm
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ONS 15310-CL, 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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