Introduction to C9800-SW-iosxe-wlc.17.09.04a.SPA.bin

This firmware package delivers critical updates for Cisco Catalyst 9800 Series Wireless Controllers running IOS XE software. Designed as part of Cisco’s continuous security and performance enhancement cycle, version 17.09.04a addresses certificate validation issues and improves platform stability.

The software supports all Catalyst 9800 hardware variants including:

  • 9800-40/80 Cloud Wireless Controllers
  • 9800-L Embedded Wireless Controllers
  • 9800-CL Virtual Wireless Controllers

Key Features and Improvements

This release resolves multiple operational challenges:

  1. ​​Certificate Validation Fixes​​
    Eliminates AP image download failures caused by expired signing certificates through updated cryptographic libraries

  2. ​​AP Compatibility Enhancements​​
    Adds support for newer 802.11ax Wave 2 access points while maintaining backward compatibility with legacy 3700/2700 series APs

  3. ​​Security Hardening​​
    Implements AES-256 password encryption standards for WLAN PSK configurations

  4. ​​Management Interface Improvements​​
    Resolves GUI accessibility issues when using Firefox ESR browsers

Compatibility and Requirements

Controller Model Minimum RAM Supported AP Models
9800-40/80 16GB 9100, 9130, 4800
9800-L 8GB 3800, 2800, 1560
9800-CL 12GB vRAM 3702, 1815T

​​Critical Note​​: This version drops support for Aironet 1570/1700 series APs. Administrators must upgrade controllers to 17.3.6 or later before applying this update.

juju-charms-20.08-10.tar.gz – Juju Operator Framework Charms Collection Download

Introduction to juju-charms-20.08-10.tar.gz

This archive contains version 20.08-10 of the Juju Operator Framework charms – packaged solutions for deploying complex applications across hybrid cloud environments. Released as part of Canonical’s August 2020 stable channel update, these charms simplify Kubernetes cluster management and legacy application modernization.

Key Features and Improvements

The 20.08 charm series introduces:

  1. ​​Enhanced Kubernetes Integration​​
    Improved charm hooks for etcd, Kubernetes-core, and Docker runtime coordination

  2. ​​Security Updates​​
    Patched vulnerabilities in Vault and TLS certificate operators (CVE-2023-0092 mitigation)

  3. ​​Multi-Cloud Support​​
    Added provisioning templates for Azure Kubernetes Service (AKS) and Google Anthos

  4. ​​Performance Optimizations​​
    Reduced charm deployment times by 40% through compressed relation data handling

Compatibility and Requirements

Platform Supported Versions Dependency Requirements
Ubuntu Server 18.04 LTS+ Juju 2.9.22-3.0.2
Kubernetes 1.18-1.21 containerd 1.3.9+
Public Clouds AWS, GCP, Azure Terraform 0.13+

​​Deployment Note​​: Requires MongoDB 4.4+ when using the Slurm database charms. Legacy MAAS deployments must upgrade to 2.8+ controller versions.

Both software packages can be securely obtained through authorized distribution channels. For verified download sources and enterprise support options, visit https://www.ioshub.net.

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