Chapter 2 Alarm Troubleshooting

Alarm Procedures

Note SFTWDOWN is an informational alarm.

2.6.155 SNTP-HOST

Minor (MN), Non-Service Affecting (NSA)

The Simple Network Timing Protocol (SNTP) Host Failure (SNTP-HOST) alarm indicates that an ONS node serving as an IP proxy for the other ONS nodes in the ring is not forwarding SNTP information to the other ONS nodes in the network. The forwarding failure can result from two causes, either the IP network attached to the ONS proxy node is experiencing problems, or the ONS proxy node itself is not functioning properly.

Procedure: Clear the SNTP-HOST Alarm

Step 1 Ping the SNTP host from a workstation in the same subnet to ensure that communication is possible within the subnet.

Step 2 If the ping fails, contact the network administrator who manages the IP network that supplies the SNTP information to the proxy and determine whether the network is experiencing problems which might affect the SNTP server/router connecting to the proxy ONS 15327.

Step 3 If no network problems exist, ensure that the ONS 15327 proxy is provisioned correctly:

a.In node view for the ONS node serving as the proxy, click the Provisioning > General tabs.

b.Ensure that the Use NTP/SNTP Server check box is checked.

c.If the Use NTP/SNTP Server check box is not checked, click the box.

d.Ensure that the Use NTP/SNTP Server field contains a valid IP address for the server.

Step 4 If proxy is correctly provisioned, refer to the Cisco ONS 15327 Reference Manual for more information about SNTP host.

Step 5 If the alarm does not clear, log onto http://www.cisco.com/tac for more information or call TAC (1-800-553-2447).

2.6.156 SPAN-SW-EAST

Not Alarmed (NA), Non-Service Affecting (NSA)

The Span Switch is Active East Side (SPAN-SW-EAST) condition occurs when a span switch occurs at the east side of a BLSR span. The condition clears when the switch is cleared.

Note SPAN-SW-EAST is an informational condition. It does not require troubleshooting.

2.6.157 SPAN-SW-WEST

Not Alarmed (NA), Non-Service Affecting (NSA)

 

Cisco ONS 15327 Troubleshooting Guide, R3.4

2-108

March 2004

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Cisco Systems ONS 15327 manual Sntp-Host, Span-Sw-East, Span-Sw-West, Procedure Clear the SNTP-HOST Alarm, 108

ONS 15327 specifications

Cisco Systems ONS 15327 is a high-performance optical networking solution tailored for service providers and enterprises looking to enhance their optical communication infrastructure. This versatile platform is recognized for its robust performance, scalability, and flexibility, making it suitable for a wide array of applications ranging from broadband access to metropolitan area networking.

One of the standout features of the ONS 15327 is its ability to handle multiple data types over a single platform. It supports a rich array of protocols, including Ethernet and SONET/SDH, allowing service providers to deliver a diverse portfolio of services to their customers. This multiservice capability simplifies the network architecture, reducing operational complexity and costs.

The ONS 15327 is designed with a modular architecture, which enables operators to customize and scale their network as demand grows. It supports a variety of card options for different media types, wavelengths, and capacity requirements. This modularity not only facilitates straightforward upgrades but also allows for efficient network management.

In terms of technology, the ONS 15327 leverages dense wavelength division multiplexing (DWDM) capabilities to maximize the utilization of available fiber bandwidth. This allows for an impressive increase in transmission capacity without the need for additional fiber installations, making it a cost-effective solution for expanding networks.

Another significant characteristic of the Cisco ONS 15327 is its advanced performance monitoring and management features. Built-in diagnostic tools provide real-time visibility into network performance, enabling prompt identification and troubleshooting of potential issues. This proactive approach to network management enhances service reliability and customer satisfaction.

Security is also paramount in the ONS 15327. The platform integrates various security features and protocols to protect the data traversing the network, ensuring compliance with industry standards and safeguarding sensitive information.

Furthermore, the equipment is designed for easy integration into existing infrastructures. Its compatibility with Cisco’s broader networking solutions allows for seamless interconnection with routers, switches, and other devices, facilitating comprehensive network solutions.

In conclusion, Cisco Systems ONS 15327 stands out as a powerful optical networking platform that combines versatility, scalability, and advanced management features. Its ability to support various protocols and harness optical technologies makes it an essential tool for organizations aiming to optimize their telecommunications infrastructure while minimizing costs and complexity.