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Category Archives: Router

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Upgrading Cisco Router IOS

Upgrading Cisco Router IOS In this post, we will learn how to upgrade Cisco Router IOS. Please follow the below steps to start with the upgrade. Assuming you are aware of setting up a TFTP Server and the consequences if the router does not come

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Reset Cisco Router Password or Reset Switch Password

How to Reset Cisco Router Password or Reset Switch Password? This is going to be very old but very informative post. People often search for this info in websites on how to reset a cisco router or cisco switch when they forget the password. The below

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Re-enable debugs on router reload – EEM Script

Re-Enable Debugs on Router Reload using EEM Script I was recently troubleshooting one issue and i ran some debugs on Cisco Voice Gateway and wrote the config by issuing the command “write memory”. Since the router received high call volume, the CPU spiked and the

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Simulate PRI E1 T1 Calls

Simulate PRI E1 T1 Calls Don’t have a real PRI? Want to simulate E1/T1 PRI on your lab? If yes, then here is the solution. You need two routers, let’s say 2800 series router which has E1/T1 Card connected on each. One router would be

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Recover Cisco Corrupt IOS Router Image

Recover Cisco Corrupt IOS Router Image Cisco Router IOS Image Corrupted? Are you facing this issue? If yes, then here is a way you can recover/restore corrupted router ios image. Assumptions – You have physical access to the Router or you can take console using HyperTerminal