Packet Tracer 5.1

Packet Tracer is a powerful network simulation program that allows students to experiment with network behavior and ask “what if” questions. As an integral part of the Networking Academy comprehensive learning experience, Packet Tracer provides simulation, visualization, authoring, assessment, and collaboration capabilities and facilitates the teaching and learning of complex technology concepts.

Packet Tracer supplements physical equipment in the classroom by allowing students to create a network with an almost unlimited number of devices, encouraging practice, discovery, and troubleshooting. The simulation-based learning environment helps students develop 21st century skills such as decision making, creative and critical thinking, and problem solving.

Download Packet Tracer 5.1 (without tutorials)

Download Packet Tracer 5.1 (with full tutorials)

IOS Boot and Upgrade Location Command List

The router can load an IOS image from the following locations:

  • Flash
  • TFTP server
  • ROM (limited version of the IOS software)

Use the boot system command in global configuration mode to identify alternate locations for the IOS image. Use the copy command to archive, upgrade, or replace an IOS image.

Use . . . To . . .
Router(config)#boot system flash Identify an IOS image file in flash to use at boot.
Router(config)#boot system tftp Identify an IOS image file on a TFTP server to use at boot.
Router(config)#boot system rom
(IOS versions 11.2 and below)
Router(config)#boot system flash bootflash:
(IOS versions 12.0 and above)
Specify to use the limited IOS version stored in ROM at boot.
Router#copy tftp flash Restore the IOS image from backup on the TFTP server to Flash.

Note: When you use the boot system command, you are not making backup copies of the IOS image, nor are you replacing the default IOS search order. You are directing the router where to look for the IOS image on boot-up. It tries each location in turn, until it finds a valid IOS image. If one is not found, it returns to the default load sequence.

CISCO - Telnet Configuration - 2

CISCO - Telnet Configuration -1

CISCO IOS - Command History

WELCOME


Hi! I love to learn, teach and experiment new technologies. I am a DSL Network Engineer in one of the leading ISP of Pakistan CYBERNET. I am my self CCNP (R & S), CCNA, MCSE 2000 & 2003, MCSA & MCP. I also have a good experience on Linux OS. My focus here will be to provide the best material to gain knowledge and also help you get certified easily.
I hope you will enjoy this blog and gain good knowledge.