Cisco Catalyst 9400 Series Switches and IOS XE Everest 16.6.x Release Notes

Quick guide from the manual

This document provides release notes and operational procedures for Cisco Catalyst 9400 Series Switches running Cisco IOS XE Everest 16.6.x. It covers hardware support, software installation, licensing, and troubleshooting.

Supported Hardware

The Catalyst 9400 series supports various chassis and modules:

• C9407R: 7-slot chassis with 5 switching module slots and 8 power supply slots.
• C9410R: 10-slot chassis with 8 switching module slots and 8 power supply slots.
• Supervisor Engines: C9400-SUP-1 and C9400-SUP-1XL.
• Modules: Various Gigabit, TenGigabit, and Multigigabit Ethernet switching modules are supported.

Software Upgrade and Downgrade

Upgrades and downgrades are performed in Install Mode. Ensure you are booted into IOS via boot flash:packages.conf.

Upgrade Procedure

1. Clean Up: Ensure at least 1GB of flash space. Run install remove inactive to delete old files.
2. Copy Image: Copy the new image to flash using copy tftp://[server_ip]/[filename] flash:.
3. Install: Run install add file flash:[filename] activate commit.
4. Reload: The system will reload automatically.

Licensing

The switches use Right-to-Use (RTU) licensing. Base licenses (Network Essentials/Advantage) are permanent, while Add-on licenses (DNA Essentials/Advantage) are term-based. Use Cisco Smart Software Manager (Cisco SSM) for managing licenses.

Web UI Requirements

To access the Web UI, ensure your system meets these minimum requirements:

• Processor: 233 MHz (1 GHz recommended).
• DRAM: 512 MB (1 GB recommended).
• OS: Windows 10 or later, Mac OS X 10.11 or later.
• Browsers: Chrome (v38+), IE (v11+), Edge (Windows 10), Firefox (v33+), Safari (v7+).

Troubleshooting

If you encounter issues, consult the Cisco TAC website. Common issues include high CPU usage during SSH/SCP operations and memory leaks with specific logging configurations. Always verify the software version using the show version command.