Download teh cisco ios

Step 9 Use the show version command to verify that the router is running with the proper image. The following documents on Cisco. The table below provides command options for copying a system image from one device to another. Methods vary according to different platforms.

Step 1 Display the system Flash directory with the show flash command:. The example below provides the command sequence to use:. Step 3 After the TFTP server is configured, you can download the specified image from the router using the copy tftp flash command, as if it were a classic TFTP server.

Password: password. Router copy tftp flash. Address or name of remote host [ Source file name? Destination file name? System configuration has been modified. Router show flash. Router show slot0. Router show slot Router copy slot0: slot1. Router configure terminal. Gns3 is one of the famous network simulator and its hot feature is that it can run the real Cisco IOS image, as compare to other network simulator like packet-tracer which perform all functions base on programming.

Remember only the c series ios images get newer IOS images. In this way you will be able to perform different switching labs with GNS3 like Vlans, inter-vlan Router on stick , VTP vlan trunking protocol , different multi-layer functionality etc.

This Image was tested with Gns3 1. A higher maintenance number means more bug fixes. Any feature, bug fix, and hardware support available in a particular maintenance version are also available in the next one. D, if present, indicates that the release is not a major release, but an extension of a major release.

These extensions usually provide new features and new hardware support. ED stands for "Early Deployment. Most non-major releases contain ED releases. GD stands for "General Deployment. Criteria for reaching the "General Deployment" milestone are based on, but not limited to, customer feedback surveys from production and test networks using the releases, Customer Engineer bug reports, and reported field experience. Only major releases are candidates for the General Deployment milestone.

LD stands for "Limited Deployment. DF stands for "Deferred. These should not be installed on your router. When choosing a release, Cisco recommends a GD release when possible. Only choose an ED release if your hardware and software features leave you no other choice.

Before you install a new Cisco IOS Software image on your router, check if your router meets the memory requirements for that image. For this, issue the show version command on your router, and look for these lines:. The memory requirements take this into account, so you have to add both numbers to find the amount of DRAM available on your router from a memory requirement point of view.

The , , , and routers have separate DRAM and Packet memory, so you only need to look at the first number.