How to gracefully shutdown network devices

1. Checkpoint Firewall
a. Gaia
command line : halt
b. SPLAT
shutdown

2. Avocent Console Server
a. ACS5000
login as root user with default password avocent
then halt

b. ACS6000


3. Juniper SRX firewalls
request system pwer-off

4. Cisco Switches and Routers
If there is power switch, just turn it off. Or unplug power cord.