Upgrading the Optical Transport Network
This section provides an overview on how to upgrade the software in a TCX Series optical transport network, including upgrading the proNX Optical Director and all the managed TCX1000 Series devices. Upgrading the network can take time, depending on the size and configuration of the network.
You must upgrade the software on the proNX Optical Director before you upgrade the software on the TCX1000 Series device. See Table 1 for the software version compatibility of the TCX1000 Series devices with this release of the proNX Optical Director.
The installation procedures for the proNX Optical Director require you to be familiar with Linux. If you are not comfortable installing Linux or running Linux commands from the command line, ensure that a craftsperson with Linux administration responsibilities is on hand throughout the installation process.
The general upgrade procedure is as follows:
- Upgrade the host OS on each server in the proNX Optical
If your current proNX Optical Director software is already running on the host OS version that is required for this release of the proNX Optical Director, you can skip this step. Otherwise, you are required to upgrade the host OS on each of the servers in your cluster to the required version prior to upgrading the proNX Optical Director software.
See Upgrading the Host OS on the Cluster Server in the proNX Optical Director Installation Guide for step-by-step instructions.
It is important that you upgrade the host OS on each server one at a time while giving sufficient time for each upgraded server to come up and resynchronize with the other servers before upgrading the host OS on the next server.
- Upgrade the proNX Optical Director software.
The proNX Optical Director software is installed on a cluster of three Linux machines. You need to set up each cluster server with the required host OS prior to installing the proNX Optical Director software.
You must use an additional computer to download, distribute, and install the required images onto the servers in the cluster. This additional computer is called the control machine. Once you set up the control machine, you can use the supplied scripts to carry out the installation on the cluster without having to work with each cluster member individually.
You can set up a new computer for the control machine or you can use an existing computer if you have one available.
The proNX Optical Director software is supplied as a single gzipped tarball. This tarball includes everything you need to upgrade the proNX Optical Director including the installation scripts and the full set of container images. The proNX Optical Director upgrade process leverages the use of Ansible scripts to facilitate installation.
See Upgrading the proNX Optical Director Software (Release 18.4 and Higher) in the proNX Optical Director Installation Guide for step-by-step instructions.
- Upgrade the software on the TCX1000 Series devices.
TCX1000 Series devices support non-disruptive software upgrades where the device retains the last known configuration and passes traffic uninterrupted. You can perform software upgrades on a single device or on multiple devices simultaneously. All software upgrades are initiated from the proNX Optical Director across the DCN (management network).
There are two phases in the software upgrade process: Stage and Activate
Staging copies the software package to the TCX1000 Series device.
Activate performs the upgrade on the device.
For more information on upgrading the software using the proNX Optical Director, see Upgrading the Software on a Device in the proNX Optical Director User Guide.
After you finish upgrading the proNX Optical Director and all the TCX1000 Series devices in your network, you can begin to activate new optical services.