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Cisco ONS 15327 Troubleshooting Guide, R3.4
March 2004
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)