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Category: Data Transmissions

Unifi: Update DNS on TRG212M router

Unifi: Update DNS on TRG212M router

      To all the Unifi user, by default your router is not allowed user to update the DNS setting. and its not visible by admin account. Here is the step you can follow to change your DNS setting   1. Login to the router using below credentials Username:  operator Password (default unifi password ):  h566UniFi 2. Go to Setup Tab 3. Click on the WAN at the left     4. On the 1_INTERNET_R Click on the edit…

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Controlling Broadcasts and Multicasts

Controlling Broadcasts and Multicasts

Controlling Broadcasts and Multicasts Introduction The first step in controlling broadcast and multicast traffic is to identify which devices are involved in a broadcast or multicast storm. The following protocols can send broadcast or multicast packets: Address Resolution Protocol (ARP) Open Shortest Path First (OSPF) IP Routing Information Protocol Version 1 (RIP1) Service Advertising Protocol (SAP) IPX Routing Information Protocol (RIP) NetWare Link Services Protocol (NLSP) AppleTalk Address Resolution Protocol (AARP) After identifying the source of the broadcast or multicast…

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Data Transmission – Broadcast

Data Transmission – Broadcast

Data Transmission – Broadcast Introduction The term “Broadcast” is used very frequently in the networking world . You will see it in most networking books and articles, or see it happening on your hub/switch when all the LED’s start flashing at the same time ! If you have been into networking for a while you most probably have come across the terms “broadcast” and “subnet broadcast” . When I first dived into the networking world, I was constantly confused between…

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Multicast IP List

Multicast IP List

Multicast IP List Introduction This page contains all the Multicast IP Addresses and shows what protocol they are mapped to. Should you ever use a packet sniffer to try and see what’s on the network and you capture a packet with a destination IP Address of 224.X.X.X, then simply look up this list and you will know what the purpose of that packet was 🙂 Internet Multicast Addressess Host Extensions for IP Multicasting [RFC1112] specifies the extensions required of a…

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Introduction To Multicast

Introduction To Multicast

Introduction To Multicast Introduction To understand what we are going to talk about, you must be familiar with how MAC addresses are structured and how they work. The MAC Addresses page is available to help you learn more about them.. A multicast is similar to a broadcast in the sense that its target is a number of machines on a network, but not all. Where a broadcast is directed to all hosts on the network, a multicast is directed to…

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Unicast

Unicast

Unicast Introduction Compaired to broadcasts and Multicasts, a Unicast is very simple and one of the most common data transmissions in a network. The Reason for Unicast Well it’s pretty obvious why they came up with Unicasts, imagine trying to send data between 2 computers on a network, using broadcasts ! All you would get would be a very slow transfer and possibly a conjested network with low bandwidth availability. Data transfers are almost all of the times, unicasts. You…

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Media Access Control – MAC Addresse

Media Access Control – MAC Addresse

Media Access Control – MAC Addresses Introduction Media Access Control (MAC) addresses are talked about in various sections on the site, such as the OSI-Layer 2, Multicast, Broadcast and Unicast. We are going to analyse them in depth here so we can get a firm understanding of them since they are part of the fundamentals of networking. MAC addresses are physical addresses, unlike IP addresses which are logical addresses. Logical addresses require you to load special drivers and protocols in…

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Data Transmissions

Data Transmissions

Introduction To Data Transmission Introduction Routable protocols enable the transmission of data between computers in different segments of a network. However, high volumes of certain kinds of network traffic can affect network efficiency because they slow down transmission speed. The amount of network traffic generated varies with the 3 types of data transmissions: Broadcast Multicast Unicast We are going to have a look at each one of these data transmissions because it’s very important to know the type of traffic…

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