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Cisco binary image unpacker is a software that allows you to unpack the IOS and ASA images. Follow this steps to use this software for GNS3. With this way the Router loading process can be faster. This is useful for those of you that do start and stop Router frequently. Donwload Cisco image unpacker 0.1  for Windows. Extract thi zip file to your specific folder.. Copy the IOS file to this folder, for example "c3640-jk9s-mz.124-16a.bin". On windows command prompt, type the following command: "unpack c3640-jk9s-mz.124-16a.bin" (without ""). The output file stored in temporary folder, in my case "C:\Documents and Settings\dion\Local Settings\Temp". Open the folder and you will find the unpacked file "C3640-JK.bin", file size is about twofold. Copy "C3640-JK.bin" to your IOS folder. Your can also rename the file to "c3640-jk9s-mz.124-16a(unpacked).bin" Open GNS3, On the Edit menu, choose IOS image and hyper...

Routers Used : 3640 w/ NM-4T IOS : c3640-jk9s-mz.124-16a Objective In this lab, an OSPF stub area and a totally stubby area will be configured. Scenario The Semarang router needs to be upgraded as it is suspected that the router is not keeping up with the growth of the OSPF internetwork. Diagnostics are performed and it is discovered that the router could benefit from more memory due to the large routing table. The router could also use a faster processor because of frequent Shortest Path First calculations. It is decided instead to create a smaller and more stable routing table using a stub or totally stubby area configuration. Step 1 Build and configure the network according to the diagram. Configure multiarea OSPF according to the diagram. However, do not configure a stub area yet. Use the configuration files from the previous lab if available and make adjustments as necessary. Note : The loopback, Lo5, on Jakarta1 can be ignored for now. Configure each router with th...