• Network-Active

    A Simple Introduction to DNS & DDNS and Why your organization might need them

    DNS stands for Domain Name System. A Simple function of the DNS server is to convert a Domain name into IP address & IP address into a Domain name. DDNS stands for Dynamic Domain Name System and it is required to provide a permanent (and easily remember-able) Domain name for remote access when you have not been assigned a permanent IP address by your ISP. We will have a look at both, in this article.

  • Network-Active

    Why are Subnets required & Subnet vs VLAN

    The first thing that network administrators learn is the concept of IP address and creating IP Subnets (short form for sub-networks). But why are Subnets required at all? Especially, when VLAN can do almost the same thing! That's what we are going to discuss, in this article.

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  • Network-Active

    An introduction to Layer-3 Network Switches

    Do you need Layer-3 Switches in your network? Possibilities are, that you might already be having some of them... In this article, we will look at what Layer-3 switches are, and some advantages of using Layer-3 network switches.

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  • Network-Active

    How Stacking Multiple Network Switches helps to build a more resilient LAN

    There are number of ways to connect the various network switches in a LAN. Stacking a group of network switches to form a single stack unit that can be managed with an individual IP address for all the switches in the stack group would not only make managing a lot of switches easier, it would also introduce switch level and link level redundancy to your LAN. In this article, we analyze the salient points about stacking multiple switches together and how various vendors have implemented it, in order to get a better idea about stacking multiple network switches and its advantages.

  • Network-Active

    Why not use Link Aggregation to extend your Network?

    Link Aggregation Architecture Diagram: Extending your network using Link Aggregation: Link Aggregation and its advantages: Link Aggregation is a very useful method to combine multiple links to form a single (bigger) link. It can be either two links from two ports of each switch connecting to another switch as shown in the above diagram, or multiple links from multiple ports. Similarly, two (or more) links from two (or more) ports from a server can also connect to two (or more) switch ports to form a bigger link. The main advantage of doing this is the higher capacity obtained from each group of aggregated links. For example, if two 1 GE…

  • Network-Active

    What is a Converged IP Network?

    A Converged IP Network today refers to the Unified Computer Network (LAN, based on IP) that uses multiple media (Wired, Wireless) to carry a variety of traffic types – Data, Voice, Video etc on a single network without the need for separate networks for each of them. Why Converged IP Networks? The Computer Networks (based on IP) are all pervasive today. Every department, building, branch of an organization requires and maintains a full fledged Local Area Network (LAN) for inter-connecting computers. The IP Network can operate on a variety of media – Copper, Fiber and wireless. So, since they have become inevitable and dominant, the other services (voice and data)…

  • Network-Active

    Need, Standards, Salient points and Challenges for 10GE (10 Gigabit Ethernet) adpotion

    Gigabit connections, which were earlier used for interconnecting network switches (hence forming the backbone connectivity) have become common to connect the desktop. Is 10 GE (10 Gigabit Ethernet) then taking over any time soon both for interconnectig switches as well as directly connecting the servers? We would explore on whether there is a need for 10 GE ports, 10 GE interconnections, standards and types of pluggable optics for 10 GE as well as salient points along with the limitations of the 10 Gigabit Ethernet, in this article.

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  • Network-Active

    Why Manageable Switches are required even and especially at the Network Edge

    This article gives an overview of why manageable switches are required, what features set them apart from unmanaged switches, and why you might want to invest a little more to accommodate managed switches even and especially at the network edge - switches which you use to connect the PC's.

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  • Network-Active

    Performance Monitoring of Enterprise Networks

    Did you know that a video conferencing application needs a latency less than 300 ms to give a good quality video images in your IP Network? There are other real time applications that require the network to maintain an optimum performance. Let us explore what parameters of the network performance could be monitored, in this article.

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  • Network-Active

    What is NAT and why is NAT Traversal required?

    This article gives an introduction to NAT - Network Address Translation, explains why NAT is required, gives an introduction to NAT Traversal (required for certain streams like SIP/H.323) and lists the techniques available for doing the NAT Traversal.

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