Clear the ISIS-ADJ-FAIL Alarm

Chapter 2 Alarm Troubleshooting

2.7.121 ISIS-ADJ-FAIL

The Open System Interconnection (OSI) Intermediate System to Intermediate-System (IS-IS) Adjacency Failure alarm is raised by an intermediate system (node routing IS Level 1 or Level 1 and 2) when no IS or end system (ES) adjacency is established on a point-to-point subnet. The Intermediate-System Adjacency Failure alarm is not supported by ES. It is also not raised by IS for disabled routers.

The alarm is typically caused by a misconfigured router manual area adjacency (MAA) address. For more information about IS-IS OSI routing and MAA configuration, refer to the “Cisco Transport Controller Operation” chapter in the Cisco ONS 15310-CL and Cisco ONS 15310-MA Reference Manual. For more information about configuring OSI, refer to the “Turn Up Node” chapter in the Cisco ONS 15310-CL and Cisco ONS 15310-MA Procedure Guide.

Step 1 Ensure that both ends of the communications channel are using the correct Layer 2 protocol and settings (LAPD or PPP). To do this, complete the following steps:

a.At the local node, in node view, click the Provisioning > Comm Channels > SDCC tabs.

b.Click the row of the circuit. Click Edit.

c.In the Edit SDCC termination dialog box, view and record the following selections: Layer 2 protocol (LAPD or PPP); Mode radio button selection (AITS or UITS); Role radio button selection (Network or User); MTU value; T200 value, and T203 selections.

d.Click Cancel.

e.Log into the remote node and follow the same steps, also recording the same information for this node.

Step 2 If both nodes do not use the same Layer 2 settings, you will have to delete the incorrect termination and recreate it. To delete it, click the termination and click Delete. To recreate it, refer to the “Turn Up Node” chapter in the Cisco ONS 15310-CL and Cisco ONS 15310-MA Procedure Guide for the procedure.

Step 3 If the nodes use PPP Layer 2, complete the “Clear the EOC Alarm” procedure on page 2-49. If the alarm does not clear, go to Step 7.

Step 4 If both nodes use the LAPD Layer 2 protocol but have different Mode settings, change the incorrect node’s entry by clicking the correct setting radio button in the Edit SDCC termination dialog box and clicking OK.

Step 5 If the Layer 2 protocol and Mode settings are correct, ensure that one node is using the Network role and the other has the User role. If not (that is, if both have the same mode settings), correct the incorrect one by clicking the correct radio button in the Edit SDCC termination dialog box and clicking OK.

Step 6 If the Layer 2, Mode, and Role settings are correct, compare the MTU settings for each node. If one is incorrect, choose the correct value in the Edit SDCC dialog box and click OK.

Step 7 If all of the preceding settings are correct, ensure that OSI routers are enabled for the communication channels at both ends by completing the following steps:

a.Click Provisioning > OSI > Routers > Setup.

b.View the router entry under the Status column. If the status is Enabled, check the other end.

c.If the Status is Disabled, click the router entry and click Edit.

d.Check the Enabled check box and click OK.

Step 8 If the routers on both ends are enabled and the alarm still has not cleared, ensure that both ends of the communications channel have a common MAA by completing the following steps:

a.Click the Provisioning > OSI > Routers > Setup tabs.

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

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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.

Cisco Systems ONS 15310-CL Clear the ISIS-ADJ-FAIL Alarm, Click Provisioning OSI Routers Setup

Models: ONS 15310-CL ONS 15310-MA