Cisco ONS 15600 Series

Field Notice: 15600-TSC May Reboot Continuously if SNMP Community String is Greater Than 20 Characters or When Multiple Trap Destinations Are Specified

December 13, 2004

Products Affected



15600 - 15600-TSC

CTC Releases R1.0, R1.1.0, R1.1.1, R1.1.2, R1.1.3, R1.3.1 and R1.4.0

Problem Description

When multiple SNMP community strings are specified where the individual community string exceeds 20 characters both Active and Standby 15600-TSC's may reboot continuously and will not recover.


This issue was found during internal testing and has been resolved in R5.0.0.

Problem Symptoms

Continuous reboot of both the Active and Standby 15600-TSC's after provisioning multiple SNMP trap destinations with community strings exceeding 20 charaters. This issue can be avoided by specifying no more than two community strings per NE with a maximum string length of 20 characters per community string.


This issue has been resolved in Cisco Transport Controller (CTC) R5.0.0 available in January 2005.

Note:?Customers must upgrade to the 15600-SSXC after upgrade to CTC R5.0.0. To obtain the 15600-SSXC's necessary to support CTC R5.0.0, submit your request using the 15600-SSXC Upgrade Program.

For customers that are currently running CTC Releases R1.0, R1.1.0, R1.1.1, R1.1.2, R1.1.3, R1.3.1 and R1.4.0, do NOT specify more than 2 SNMP community strings or exceed 20 characters per community string.


To follow the bug ID link below and see detailed bug information, you must be a registered user and you must be logged in.



CSCeg50935 (registered customers only)

SNMP community strings greater than 20 characters may result in continuous 15600-TSC reboots

For More Information

If you require further assistance, or if you have any further questions regarding this field notice, please contact the Cisco Systems Technical Assistance Center (TAC) by one of the following methods:

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