Skip to content

2012 in review


The WordPress.com stats helper monkeys prepared a 2012 annual report for this blog.

Here’s an excerpt:

The new Boeing 787 Dreamliner can carry about 250 passengers. This blog was viewed about 1,300 times in 2012. If it were a Dreamliner, it would take about 5 trips to carry that many people.

Click here to see the complete report.

Switches learning MAC addresses


The filter-versus-forward decision works best when the switches know where all the MAC addresses are in the network. Switches dynamically learn the MAC addresses in the network to build its MAC address table. With a full and accurate MAC address table. The switch can make accurate forwarding decisions.

Read more…

Catalyst Switch Operation


Introduction

Cisco has manufactured two switch series, which are Catalyst 1900 and 2900 switches that are available in two editions. These two editions include Standard Edition and Enterprise Editions. The 1900 series of switches supports nigh-speed server connections using UTP of fiber-optic cables. The 2900 family of switches provides faster data transfer rate compared to the 1900 switch.

Read more…

Network Address Translator(NAT)/Port Address Translation(PAT)


Introduction

Network Address Translator (NAT) operates on a router connecting two networks. One of these networks, which is designated as inside, is addressed with either private or obsolete addresses. These addresses require to be converted into legal addresses before the packets are forwarded to the other network. The other network is designed as outside. In addition, the translation operates in conjunction with routing, so that NAT can be enabled on a customer side Internet access router when translation is required. Read more…

Assembling and Cabling Cisco Devices


Introduction:

A network consists of many computers connected together. In addition to computers, there are additional devices that enhance data transfer in terms of speed and quality. These devices are connected to each other using cables. Cabling is of three. The choice of a cabling medium and device in a network depends on the factors, such as organization requirements, cost factor, and type of data to be transferred.

Read more…

Establishing Serial Point-to-Point Connection


Introduction

Organizations and home users connect to networks to share information and resources. Most organizations create an internal private network for the use of the employees. These types of networks enable employees to access the organizations resources, from within, and outside the organization. Employees can also share resource of different branches using a network. Most networks span over cities and states, which became a part of other networks. These networks together form the internet.

Read more…

IP Routing


Introduction:

Routing refers to the process of transferring data from the source to the destination. It occurs at the network layer of the OSI model. A router selects the appropriate route for the data packets based on its routing tables. Every router maintains a routing table that stores different routes on the network. IP Routing provides a mechanism for the routers to connect networks and transfer data based on the IP header in the data packet.

Read more…

Basic IP Traffic Management with Access lists


Introduction : 

The Access Control List (ACL) is a set of commands, which are grouped together. These commands enable to filter the traffic that enters or leaves an interface. A wildcard mask enables to match the range of address in the ACL statements. There are two references, which a router makes to ACLs, such as, numbered and named. These reference support two types of ;filtering, such as standard and extended. You need to first configure the ACL statements and then activate them.

Read more…

Networking Concept


Introduction:

An internetwork consists of two of more networks connected to each other. These networks are joined using cables and devices. Several factors determine the type of network. In each type of network, the devices are connected in a specific way. For communication between the networks different models, such as OSI, exist defining the manner in which the communication between network occurs.

Read more…

Router Fundamentals


Router

A Router is a network device that enables you the direct data traffic to an appropriate destination. Routers maintain routing tables that contain IP addresses of computers over the network. A router has different components that enable its proper functioning. The Internetwork Operating System (IOS) acts as an operating system for the network devices. The IOS has many features that enable the user to interact with the devices.

Read more…

Follow

Get every new post delivered to your Inbox.

Join 69 other followers