Actually, no—it usually keeps it. But sometimes, the new firmware deprecates a command. Your fancy ACL that worked on version 5.20 might crash version 7.10.
But you are a professional. You do this: hp 5130 switch firmware upgrade
The system is going to reboot. Continue? [Y/N]: As the switch reboots, the fans spin up to jet-engine volume. The console floods with hex codes. You see: Actually, no—it usually keeps it
Suddenly:
Happy upgrading. May your latency be low and your checksums match. no—it usually keeps it. But sometimes
System is starting... Press Ctrl+D to access BASIC-BOOTWARE menu... You ignore that. Ten seconds later, the login prompt appears. You log in.