4-2
Cisco 7304 Network Service Engine Installation and Configuration
OL-3967-01
Chapter 4 Removing and Installing the NSE
Powering Down the Router and Disconnecting Input Power
•
If access to the front of the router is partially blocked by a power strip or some other permanent rack
fixture, detach the router from the rack and carefully slide it forward until there is enough clearance
to remove the network services engine from the router. Detailed steps for detaching the router from
the rack are contained in the
“Removing the Network Services Engine” section on page 4-4
.
Powering Down the Router and Disconnecting Input Power
The following sections describe how to remove power from an AC-input power supply and a DC-input
power supply:
•
Powering Down an AC-Input Power Supply, page 4-2
•
Powering Down a DC-Input Power Supply and Removing the DC-Input Leads, page 4-3
Note
If you have two NSEs in the Cisco 7304 router in a high availability configuration and want to remove
one, do not power down the router. Simply remove the NSE and insert a new one, because high
availability provides for the other NSE to take on the processing tasks for the router.
Powering Down an AC-Input Power Supply
Note
Before powering down the router, use the
copy running-config startup-config
command to save the
router’s running configuration to nonvolatile random-access memory (NVRAM) or another file
system.
The Cisco 7304 power supply switches have a standby symbol (a broken circle with a line through it)
and an on symbol (|) on the power switch. If only one power supply is installed in the router, the standby
symbol means off, as there is no other power supply to take over its function. If two power supplies are
installed, one is turned on, and the other power supply switch is set to the standby position, as it will be
activated automatically if the primary power supply fails.
To power down the AC-input power supply to the Cisco 7304 router, complete the following steps:
Step 1
Place the power switch to the standby position (broken circle with a line through it).
Step 2
Observe the following items:
•
The green INPUT OK LED and FAN OK LED on the power supply turn off.
•
The fans in the power supply stop operating.
•
All LEDs turn off.
Step 3
Remove the cable from the AC-input power receptacle.
Note
When powering off the router, wait 30 seconds before powering it on again.
This completes the procedure for powering down an AC-input power supply on a Cisco 7304 router.
