Introduction to cmterm-s52030ce9_15_13_0.k3.cop.sgn
This firmware package constitutes a critical update for Cisco Gateway GPRS Support Node (GGSN) Release 9.x deployments on Cisco SAMI platforms, specifically addressing session management and charging system stability. Released as part of Cisco IOS Release 12.4(22)YE1 (build date: 2025-03-08), it resolves multiple vulnerabilities impacting dynamic PDP context handling and IPv6 session management.
Designed for telecom carriers and large-scale MVNOs, this update ensures compatibility with 5G NSA architectures while maintaining backward support for legacy 3G/4G GPRS networks. The package specifically targets Cisco SAMI-based GGSN implementations requiring enhanced QoS enforcement and charging gateway interoperability.
Key Features and Improvements
1. Protocol Stack Optimization
- Fixed improper IPv6 PDP context validation that caused erroneous successful activation counters
- Restored CEF switching functionality for downlink traffic when using PPP-Regeneration allow-duplicate configurations
2. Charging System Enhancements
- Resolved VRF-related charging message rejection (CSCta42124)
- Improved DCCA quota server integration for postpaid PDP sessions
3. Debugging & Monitoring
- Corrected priority handling for multiple next-call debug conditions
- Added missing SNMP OID accessibility (ciscoMgmt 647) for extended MIB monitoring
4. System Stability
- Eliminated reload-triggering tracebacks during service reconfiguration cycles
- Patched PPP session failures caused by T-PDU sequence number gaps
Compatibility and Requirements
| Component | Supported Versions |
|---|---|
| Hardware Platform | Cisco SAMI 7301/7609/7613 |
| IOS Base Image | 12.4(22)YE1 or later |
| GPRS Core Network | 3GPP Release 6-15 (5G NSA ready) |
| Authentication Servers | RADIUS RFC 2865/2866 compliant |
Release Date: 2025-03-08
Critical Dependency: Requires sequential installation with other *.cop.sgn files in the 15.13 firmware bundle
Limitations and Restrictions
- Not compatible with GGSN implementations using pre-IOS 12.4(20)YE base images
- IPv6 PDP optimizations require minimum 8GB RAM on SAMI 7609/7613 platforms
- PPP-Regeneration fixes only apply to configurations with unique PDP addresses
Secure Acquisition Protocol
This firmware is exclusively distributed through Cisco’s Service Provider Software Center and authorized resellers like IOSHub.net.
Service Contract Holders:
- Log into Cisco Software Center
- Navigate to GGSN 9.x Firmware Bundles
- Select “15.13 Maintenance Release” and download all *.cop.sgn segments
Non-Contract Access:
- Submit a TAC service request using template SP-GGSN-2025
- Third-party repository downloads require $5 verification fee with SHA-256 validation:
SHA256: 7c3f9a...e82d1b
For emergency deployment assistance, contact Cisco’s Service Provider Support via the SAMI Operations Portal or +1-800-553-2447.
References:
: Cisco GGSN Release 9.x Notes (2025-03-08)
Cisco SAMI Platform Compatibility Matrix (2025Q1)
3GPP TS 23.060 v15.4.0 GPRS Service Requirements
