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Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, R7.0
Chapter1 General Troubleshooting
1.9.7 Java Runtime Environment Incompatible
1.9.7 Java Runtime Environment Incompatible
Symptom The CTC application does not run properly.
Table 1 -12 describes the potential cause of the symptom and the solution.
Note CTC will notify you if an older version JRE is running on your Windows PC or UNIX workstation.

Launch CTC to Correct the Core Version Build

Step1 Exit the current CTC session and completely close the browser.
Step2 Start the browser.
Step3 Type the node IP address of the node that reported the alarm. This can be the original IP address you
logged in with or an IP address other than the original.
Step4 Log into CTC. The browser downloads the JAR file from CTC.
Table1-12 Java Runtime Environment Incompatible
Possible Problem Solution
The compatible Java 2
JRE is not installed.
The Java 2 JRE contains the Java virtual machine, runtime class libraries,
and Java application launcher that are necessary to run programs written in
the Java programming language.
Note CTC is a Java application. A Java application, unlike an applet,
cannot rely completely on a web browser for installation and runtime
services. When you run an application written in the Java
programming language, you need the correct JRE installed. The
correct JRE for each CTC software release is included on the Cisco
software CD and on the Cisco ONS 15310-CL and ONS 15310-MA
documentation CD. See the “Launch CTC to Correct the Core
Version Build” procedure on page1-5 8.
Note If you are running multiple CTC software releases on a network, the
JRE installed on the computer must be compatible with all of the
releases that you are running. See Table1-13 on page 1-59.