Upgrade Overview
Use the procedures in this chapter to complete one of the following upgrade types using either the Cisco Unified OS Admin GUI or the CLI. For procedures, refer to the task flow that covers your upgrade type.
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Clusterwide Upgrades (Direct Standard)—Pre-upgrade version must be 12.5(1) minimum. Otherwise, you must use the other method.
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Upgrade Cluster Nodes (Direct Refresh)
Note |
For upgrades and migrations that use Cisco Prime Collaboration Deployment, refer to the Cisco Prime Collaboration Deployment Administration Guide to set up an upgrade task or migration task. |
Before You Begin
Caution |
Stop all configuration tasks. Don't make any configuration changes during upgrade. For example, don't change passwords, perform LDAP synchronizations, or run any automated jobs. Don't remove, re-add, or reinstall any nodes in the cluster during the upgrade process. You can make configuration changes only when you have completed the upgrade on all nodes and completed postupgrade tasks. The upgrade overwrites configuration changes that you make during the upgrade, and some configuration changes can cause the upgrade to fail. We recommend that you suspend user synchronization with LDAP. Don't resume synchronization until you have completed the upgrade on all Unified Communications Manager and IM and Presence Service cluster nodes. |
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Don't rename or compress the upgrade file. Otherwise, the system rejects the file as a valid upgrade file.
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For IM and Presence Service upgrades, check that the contact list size for users is below the maximum. Use the System Troubleshooter in Cisco Unified CM IM and Presence Administration to verify that no users have exceeded the limit.
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Modify the network adapter to VMXNET3 before the upgrade process. For details, see your OVA readme file.
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If you're upgrading a node in FIPS mode, make sure that your security password has a minimum of 14 characters. To change passwords, see 'Reset the Administrator or Security Password' section in the "Getting Started" chapter of the Administration Guide for Cisco Unified Communications Manager.
Note |
Complete Refresh Upgrades during a maintenance window as the upgrade requires several reboots and the system doesn't process traffic during an upgrade. |
Note |
From release 12.5(1) SU2 onwards, it's recommended to perform both the upgrade stages [Install and Switch Version] during the same Maintenance Window to avoid an impact on the other AXL dependent integrations. |
Note |
During the switch version, only User Facing Features (UFF) in dynamic tables (numplandynamic, devicedynamic, and more) gets updated. Other tables are migrated during upgrade. Any configuration changes after the upgrade or before the switch versions are lost. |
Note |
In the upgrade logs, it is observed that there is time discrepancy or time jumps during certain intervals. This time jump is an expected behavior since the hardware clock is disabled until the system synchronizes with the NTP server. |
Download Upgrade Files
Before you upgrade, download the files that you need:.
Note |
To optimize the upgrade, make sure to save the downloaded files in the same directory. |
Files to Download |
Download Site |
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Unified CM Upgrade ISO |
Go to Unified Communications Manager Downloads—Select your version and then look under Unified Communications Manager Updates for upgrade ISOs. For example, |
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IM and Presence Service Upgrade ISO |
Go to IM and Presence Service Downloads—Select your version and look under Unified Presence Server (CUP) updates for upgrade ISOs. For example, |
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Upgrade Readiness COP Files (pre-upgrade and post-upgrade) |
You can download the pre-upgrade COP file and post-upgrade COP file from either of the above download sites:
For example,
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