<Huawei> display startup # Expected output: "Startup system software: S5720-V200R021C10.cc" If your firmware includes a web management file ( .web.7z ) or a patch file ( .pat ), load them:
Bookmark Huawei’s official support portal (support.huawei.com) and subscribe to VRP security bulletins. Perform a trial upgrade on a lab switch this quarter. Your network’s reliability depends on it. Disclaimer: Firmware versions mentioned (e.g., V200R021C10) are examples. Always consult the official Huawei documentation specific to your chassis model. Huawei Switch Firmware Upgrade
<Huawei> issu check file S7700-V200R021C10.cc # Validates compatibility <Huawei> issu start file S7700-V200R021C10.cc # Begins the process <Huawei> display issu state # Monitor progress Warning: Do not configure or reboot manually during ISSU. Packet loss is usually under 1 second, but LACP and BFD sessions may reset. Failure 1: "The file is not supported on this device." Cause: Wrong architecture. S5720-52P-PWR uses a different VRP compilation than S5720-28X. Fix: Download the specific file from Huawei’s "Software Download" section matched to your S5720-52P-PWR exact PID. Failure 2: Switch boots to "BootROM" menu only. Cause: The firmware file is corrupt or the bootloader variable is wrong. Fix: At the BootROM prompt (press Ctrl+B during boot), select option 4 (Update from Network), or 7 (Skip current configuration). If the main firmware is deleted, use XModem: bash BootROM> 2 # Enter serial submenu BootROM> 3 # Download using XModem # In your terminal software (PuTTY/TeraTerm), send the file via XModem-1K. Failure 3: VRPD process crashes repeatedly. Cause: The previous config uses a deprecated command (e.g., stp mode rstp replaced by stp mode mstp ). Fix: Boot with factory settings: bash <Huawei> reset saved-configuration <Huawei> reboot Then manually reapply your config line-by-line, converting obsolete commands. Failure 4: Licenses are missing post-upgrade. Cause: Major version jumps often invalidate old licenses (e.g., V200R010 to V200R020). Fix: Generate a new license file from Huawei’s License Center using the switch’s ESN ( display esn ). Upload it via: bash <Huawei> license active LIC_S5720_2024.dat Part 7: The Enterprise Automation Approach (Python + NETCONF) Manually upgrading 50 edge switches is tedious. Modern Huawei switches support NETCONF over SSH. Sample Python script using ncclient : Disclaimer: Firmware versions mentioned (e
<Huawei> startup system-software S5720-V200R021C10.cc Verification: Packet loss is usually under 1 second, but
A (often referred to as a system software or VRP upgrade) is not merely a routine maintenance task; it is a critical security imperative. Outdated firmware contains unpatched vulnerabilities, memory leaks, and compatibility issues with newer hardware or protocols like EVPN and VXLAN.