Warning: Do not configure or reboot manually during ISSU. Packet loss is usually under 1 second, but LACP and BFD sessions may reset.
The fans spun down. The familiar hum of the rack dropped an octave, then fell into silence. The status LEDs on the front of the chassis, usually a frantic blinking green, turned dark. Huawei Switch Firmware Upgrade
| Step | Action | Command/Note | |------|--------|--------------| | 1 | Verify MD5 of new firmware | display file checksum | | 2 | Check flash space | dir – ensure >2x firmware size free | | 3 | Copy firmware | tftp ... get | | 4 | Set as main boot | startup system-software <file> main | | 5 | Save config | save | | 6 | Schedule reboot | reboot at 02:00 or immediate with confirm | | 7 | Monitor boot | via console or SSH | Warning: Do not configure or reboot manually during ISSU
Check the upgrade path. Some versions require intermediate steps. The familiar hum of the rack dropped an