Category: Cisco Tutorials

How Many HostsHow Many Hosts

How many hosts per subnet       This will show you how to work out how many hosts per subnet on a class C network Let’s say you have been given the subnet mask of 255.255.255.224 The first thing we need to do is change our mask to binary. If you do

Cisco SwitchingCisco Switching

Different types of switching, the idea of this page is to give you a brief description of 3 different types of switching they are store & forward, cut through and fragment free. Store and forward switchingStore & forward switching reads an entire frame before forwarding it. The frame is also

Default RoutesDefault Routes

This page will describe default routes and explain how they are configured. By default, routers learn paths to destinations three different ways: Static routes – The system administrator manually defines the static routes as the next hop to a destination. Static routes are useful for security and traffic reduction, as no

What Is ROMWhat Is ROM

Introduction to routers in a WAN NVRAM has the following characteristics and functions: Provides storage for the startup configuration file Retains content when a router is powered down or restarted Flash memory has the following characteristics and functions: Holds the IOS image Allows software to be updated without removing and

Frame RelayFrame Relay

frame relay quick notes       This page is quick notes for people wanting a run down on Frame Relay. Frame Relay is a high performance Wan protocol that operates at the physical and data layers of the OSI model. Devices attached to frame relay fall in to 2 categories 1, DTE,

What is FlashWhat is Flash

Role of routers in a WAN Download a decimal to binary converter Flash – Flash memory is used for storage of a full Cisco IOS software image. The router normally acquires the default IOS from flash. These images can be upgraded by loading a new image into flash. The IOS may