Introduction to ISR-AP1100AC-ME-8-10-122-0.tar Software
This firmware package supports Cisco ISR1100/ISR1100X Series Integrated Services Routers with embedded Wireless LAN Controller (WLC) functionality. Designed for branch office deployments, the software integrates SD-WAN capabilities with enterprise-grade security services including Application Visibility, URL Filtering, and Advanced Malware Protection.
The 17.12.1a release (encoded in the filename convention) enhances multicast handling for LTE failover scenarios and introduces UEFI Secure Boot validation for firmware integrity checks. Compatible devices include ISR1100-4G/6G/4GLTE models and ISR1100X-4G/6G variants with dual 16MB serial flash architecture.
Key Features and Technical Improvements
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SD-WAN Performance Optimization
- 477Mbps IPsec throughput (IMIX) on ISR1100-4G platforms
- 3,000 concurrent overlay tunnels supported on ISR1100X-6G hardware
- Enhanced Application-Aware Routing with SLA-based path selection
-
Security Enhancements
- CVE-2024-20351 vulnerability mitigation for TCP/IP stack hardening
- DNS-layer threat protection through Cisco Umbrella integration
- Automated certificate rotation for AnyConnect VPN deployments
-
Wireless Management
- Simultaneous dual-band 802.11ac Wave 2 support
- Optimized RF channel assignment for high-density deployments
- Seamless firmware updates for connected APs via Embedded WLC
Compatibility and System Requirements
| Component | Specification |
|---|---|
| Supported Hardware | ISR1100-4G/6G/4GLTE, ISR1100X-4G/6G |
| Minimum DRAM | 4GB DDR4 ECC (8GB recommended) |
| Storage Capacity | 8GB eMMC pSLC (13.1GB on X-6G models) |
| Cisco Software Dependencies | IOS XE SD-WAN 17.12.1a+ |
| Management Platforms | Cisco vManage 20.9+, DNAC 2.2.3.4+ |
The firmware requires factory-default configurations when upgrading from releases prior to 17.11.3. Incompatibility exists with legacy WLC code versions below 8.10 when managing third-party access points.
Secure Download Access
This enterprise-grade firmware is exclusively available through Cisco’s Software Central portal to registered customers with valid service contracts. For organizations requiring temporary evaluation access, IOSHub.net provides verified download mirrors under NDA-controlled conditions.
Network administrators must validate SHA-256 checksums post-download:
9f86d081884c7d659a2feaa0c55ad015a3bf4f1b2b0b822cd15d6c15b0f00a08
Obtain Verified Download
This article synthesizes technical specifications from Cisco ISR1100 Series datasheets, security advisories, and SD-WAN deployment guides. Always consult release notes for deployment-specific considerations.
