Cisco 3925 User Manual

237
Cisco 3900 Series, Cisco 2900 Series, and Cisco 1900 Series Integrated Services Routers Generation 2 Software Configuration Guide
Chapter Upgrading the Cisco IOS Software
How to Upgrade the Cisco IOS Image
Step 10 exit
Use this command to exit global configuration mode:
Router(config)# exit
Router#
Step 11 copy run start
Use this command to copy the running configuration to the startup configuration:
Router# copy run start
What to Do Next
Proceed to the “Saving Backup Copies of Your New System Image and Configuration” section on
page 237.
Saving Backup Copies of Your New System Image and Configuration
To aid file recovery and to minimize downtime in the event of file corruption, we recommend that you
save backup copies of the startup configuration file and the Cisco IOS software system image file on a
server.
Tip Do not erase any existing backup copies of your configuration and system image that you saved before
upgrading your system image. If you encounter serious problems using your new system image or startup
configuration, you can quickly revert to the previous working configuration and system image.
For more detailed information, see the “Managing Configuration Files” chapter and the “Loading and
Maintaining System Images” chapter of the Cisco IOS Configuration Fundamentals Configuration
Guide at:
http://www.cisco.com/en/US/docs/ios/fundamentals/configuration/guide/12_4/cf_12_4_book.html.
To save backup copies of the startup configuration file and the system image file, complete the following
steps.
SUMMARY STEPS
1. enable
2. copy nvram:startup-config {ftp: | rcp: | tftp:}
3. dir flash0:
4. copy flash0: {ftp: | rcp: | tftp:}

Cisco 3925 Specifications

General

Product Type	Router
Form Factor	Rack-mountable
Data Link Protocol	Ethernet, Fast Ethernet, Gigabit Ethernet
Connectivity Technology	Wired
Power	AC 120/230 V (50/60 Hz)
Redundant Power Supply	Optional
Routing Protocol	OSPF, IS-IS, BGP, EIGRP, PIM
Network/Transport Protocol	IPSec
Remote Management Protocol	SNMP, Telnet, SSH, HTTP
Encryption Algorithm	DES, Triple DES, AES
Flash Memory	256 MB
Weight	11.5 kg
Interfaces	2 x SFP (mini-GBIC)
Power Source	Internal power supply
Authentication Method	RADIUS, TACACS+, LDAP
Compliant Standards	IEEE 802.1Q, IEEE 802.3af
Operating Temperature	0 to 40 °C
Operating Humidity	5% to 85% (non-condensing)
Dimensions (WxDxH)	44.5 x 47.2 x 8.9 cm