Cisco IOS Image Security

This article discusses Cisco IOS image types and provides methods to ensure that the images are complete and have not been modified. It also briefly covers digital signatures that are possible with newer Cisco hardware. Overview The previous article talked about the different Cisco IOS image types, the image file-naming structure, and the different ways […]

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Configuring an IP Addressing Scheme

This article takes a look at the practical implementation of example ranges on Cisco IOS as well as the configuration of a basic Routing Information Protocol (RIP) network showing a complete routing table between all organizational departments. This article is the last in a series of IP subnetting articles. While the other articles were focused […]

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Advanced IPv4 Concepts and Examples

This article includes a longer discussion of how subnetting is used to separate a larger address space into smaller pieces for more efficient assignment and routing. This will include a discussion of how to perform the binary math that is required for more complex subnetting. This article is a continuation of where “IP Subnetting Basics” […]

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Cisco Device Configuration Management

When an engineer begins to use Cisco equipment, there are a number of different concepts that must be clearly understood; this includes how Cisco organizes their configurations, how interfaces and lines are organized, how secure access is configured, among many other things. This article takes a look at how Cisco organizes their configurations within a […]

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Quality of Service Configuration Basics for Cisco Professionals

When it comes to configuring Quality of Service (QoS) on Cisco equipment there are a couple of main concepts which must be understood. Cisco QoS is typically configured on modern equipment using the Modular QoS Command-line interface (MQC). With MQC, traffic is classified using the class-map and match commands, traffic policy is defined using the […]

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