Introduction to ciscocm.preUpgradeCheck-00024.cop.sgn

This digitally signed COP file serves as Cisco’s standardized pre-upgrade validation tool for Unified Communications Manager (CUCM) clusters, designed to automate system readiness checks before major version migrations. Released under Cisco’s 2025 Q2 software maintenance cycle, it specifically targets CUCM 11.5(1)SU4 and later environments preparing for upgrades to CUCM 14.x platforms.

The tool performs 48 automated diagnostic checks across six critical categories: storage capacity, service dependencies, database integrity, network configurations, security policy compliance, and third-party integration status. Compatible with both physical UCS C-Series servers (C220 M7/C240 M7) and virtualized deployments on VMware ESXi 6.7+, it generates detailed PASS/WARN/FAIL reports in HTML and CSV formats.

Key Features and Improvements

1. Enhanced Diagnostic Capabilities

  • ​​Storage Analysis​​: Verifies 25% free space requirement across /common/logs and /var partitions
  • ​​Backup Validation​​: Tests Disaster Recovery System (DRS) functionality with 500GB+ dataset simulations

2. Security Compliance Updates

  • TLS 1.3 cipher suite compatibility checks for SIP trunk configurations
  • Certificate expiration alerts for Tomcat/PLDM services

3. Performance Optimizations

  • 60% faster cluster-wide checks through parallelized node validation
  • Reduced memory footprint (1.2GB → 800MB) for low-resource environments

4. Third-Party Integration Tests

  • Webex Calling API handshake verification
  • Microsoft Teams Direct Routing policy audits

Compatibility and Requirements

Supported Platforms

Hardware/Environment Minimum Requirements Notes
UCS C220 M7 Rack Server CUCM 11.5(1)SU4 64GB RAM recommended
VMware ESXi 6.7+ vSphere 7.0 Update 3 Disable DRS during validation
HyperFlex HX220c HX Data Platform 5.0 Requires 500GB SSD cache

Software Dependencies

  • Cisco Unified OS 11.5(1.18901) or later
  • OpenJDK 11.0.18+ for report generation
  • SNMP v3 read-access credentials

Limitations and Restrictions

  1. ​​Version Constraints​​

    • Incompatible with CUCM 10.x clusters due to schema differences
    • Requires manual intervention for WARN-level findings

  2. ​​Virtualization Exclusions​​

    • Hyper-V clusters with live migration enabled
    • Kubernetes-based container deployments

  3. ​​Resource Thresholds​​

    • Minimum 8 vCPU allocation for clusters >20 nodes
    • 1Gbps dedicated network bandwidth for multi-site checks

Obtain ciscocm.preUpgradeCheck-00024.cop.sgn

  1. ​​Cisco Official Sources​​

    • Download via Cisco Software Center (Valid SMART Net contract required)
    • SHA512 Verification Hash:
      d41f3a...9c2b (Full value in CUCM 14 Upgrade Guide)

  2. ​​Licensed Partner Channels​​

    • Access through Cisco Partner Hub with CCO login
    • Bulk deployment packages for MSPs managing 50+ clusters

For alternative distribution options, visit IOSHub Cisco Utilities Repository to submit a verified access request.

Critical Note: Always run this COP file 72 hours before planned maintenance windows to allow time for corrective actions. Cisco TAC recommends retaining validation reports for 90 days post-upgrade for audit purposes.

: Cisco Unified Communications Manager Upgrade Readiness Checks
: Cisco UCS C-Series Server Firmware Compatibility Matrix

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