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Cisco ONS 15454 SDH Reference Manual, R5.0
April 2008
Chapter8 Cisco Transport Contro ller Operation
8.1.2 CTC Software Installed on the PC or UNIX Workstation

8.1.2 CTC Software Installed on the PC or UNIX Workstation

CTC software is downloaded from the TCC2/TCC2P cards and installed on your comput er automatically
after you connect to the ONS 15454 SDH with a new software release for the first time. Downloading
the CTC software files automatically ensures that your computer is running the same CTC software
version as the TCC2/TCC2P cards you are accessing. The computer CTC software files are stored in the
temporary directory designated by your computer’s operating system. You can use the Delete CT C
Cache button to remove files stored in the temporary directory. If the files are deleted, they download
the next time you connect to an ONS 15454 SDH. Downloading the Java archive files, called “JAR” files,
for CTC takes several minutes depending on the bandwidth of the connection between your workstation
and the ONS 15454 SDH. For example, JAR files downloaded from a modem or a data communication
channel (DCC) network link require more time than JAR files downloaded over a LAN connection.
8.2 CTC Installation Overview
To connect to an ONS 15454 SDH using CTC, you enter the ONS 15454 SDH IP address in the U RL
field of Netscape Communicator or Microsoft Internet Explorer. After connecting to an
ONS 15454 SDH, the following occurs automatically:
1. A CTC launcher applet is downloaded from the TCC2/TCC2P card to yo ur computer.
2. The launcher determines whether your computer has a CTC release matching the release on the
ONS 15454 SDH TCC2/TCC2P card.
3. If the computer does not have CTC installed, or if the installed release is older than the
TCC2/TCC2P card’s version, the launcher downloads the CTC program files from the TCC2/TCC2P
card.
4. The launcher starts CTC. The CTC session is separate from the web browser session, so the web
browser is no longer needed. Always log into nodes having the latest software release. If you log
into an ONS 15454 SDH that is connected to ONS 15454 SDHs with older versions of CTC, CTC
files are downloaded automatically to enable you to interact with those nodes. The CTC file
download occurs only when necessary, such as during your first login. You cannot interact with
nodes on the network that have a software version later than the node that you used to launch CTC.
Each ONS 15454 SDH can handle up to five concurrent CTC sessions. CTC performance can vary,
depending upon the volume of activity in each session, network bandwidth, and TCC2/TCC2P card load.
Note The TCC2/TCC2P card requires Software R4.0 or later.
8.3 PC and UNIX Workstation Requirements
To use CTC in the ONS 15454 SDH, your computer must have a web browser with the correct Java
Runtime Environment (JRE) installed. The correct JRE for each CTC software release is included on the
ONS 15454 SDH software CD and the ONS 15454 SDH documentation CD. If you are running multiple
CTC software releases on a network, the JRE installed on the computer must be compatible with the
different software releases.
You can change the JRE version on the Preferences dialog box JRE tab. When you chan ge the JRE
version on the JRE tab, you must exit and restart CTC for the new JRE version to take effect. Tabl e 8-1
shows JRE compatibility with ONS software releases.