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Cisco Routers Password Reset

Learn how to reset and/or clear the console and enable passwords from a Cisco 2900 Series Router(s) and other routers including the 1700, 3600, 3700, 1800, 2800, 3800 and the New ISR G2′s Series routers. The Cisco 2900 Series routers are by far the most...

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Recovering IOS on a 2600 Series

Real World Application The Cisco 2600 Series Multi-Service router platform is a dying bread as the Cisco 2800 Series has taken its place however the 2600 series continues to be the router of choice when it comes to building your own Cisco Lab. The Cisco...

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Configure ADSL on a Cisco Router

When would you need this: When you need to configure your router to operate on ADSL line provided by an ISP. Special Requirements: ADSL WAN interface on the router. Before starting, makea list of the information you will need from your service provider....

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How does IPv4 Subnetting Work

Your ISP gives you the range the network ID 192.168.40.0/24 (11000000.10101000.00101000.00000000). You know that you'd like to use a firewall / router device to limit communication between different parts of your network (servers, client computers, network...

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CEF and load sharing

Load-sharing is one of the clumsy areas that is full of confusing parts. In this post we should be covering its ABCs, and latter on we should be covering more parts in details. We chose the name “CEF and load sharing” as the post name due to the main...

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How VLAN Tagging, Untagging Works

Question: This seems like a simple concept but I'm having a hard time grasping which traffic is tagged vs that which is not tagged. We have a network of primarily WS-C3750X-24T-S switches with several VLANs, and dot1q trunks setup between the switch stacks....

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How to configuring default gateway on switch

Question: I took some very good advice & signed up for the Cisco Learning Lab. The wording on the intial switch setup instructions & the default gateway is a little confusing. For a switch the ip default-gateway command should be run in the global config...

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