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We are pleased to share with you all an interesting article contributed by Harpreet Kaur who is currently working as System Design Engineer in the Network Infra Team at Hughes Systique. She has 18 years of experience in telecom industry. She has been leading the SDN/NFV initiatives in the organization. Harpreet Kaur System Desig...
12/16/2018
11,417
We are pleased to share with you all an interesting article contributed by Mina G. Nasry who has decent experience in Data Carrier/ISP scope. Mina G. Nasry Network Engineer, Core Team at NOOR Data Network All Articles by Mina G. Nasry...
11/21/2017
11,719
We are pleased to share with you all an interesting article contributed by Abdul Aziz Khan who is a Telecom Professional having more than 18 years of diverse Telecom Experience of Planning, Project Management, Optimization and Operations, he is currently working in Network Optimization team of Mobily KSA. Abdulaziz Khan Technical...
10/12/2017
11,143
We are pleased to share with you all an interesting article contributed by Abdul Aziz Khan who is a Telecom Professional having more than 18 years of diverse Telecom Experience of Planning, Project Management, Optimization and Operations, he is currently working in Network Optimization team of Mobily KSA. Abdulaziz Khan Technical...
09/21/2017
10,124
We are pleased to share with you all an interesting article contributed by Zied TURKI. Zied TURKI onsultant at NetXP All Articles by Zied TURKI How to contribute your article to Netmanias.com !...
01/18/2017
13,825
We are pleased to share with you all an interesting article contributed by Mina G. Nasry who has decent experience in Data Carrier/ISP scope. Mina G. Nasry Network Engineer, Core Team at NOOR Data Network All Articles by Mina G. Nasry...
10/24/2016
13,792
GSLB service enables users (clients) to connect to the most optimized server among those that serve the same purpose, improving service reliability. In addition, it helps to prevent traffic from being concentrated on a small number of servers, enhancing server availability. This post will discuss the benefits that GSLB can bring to an enterprise with distributed servers, and its service logic...
08/12/2015
22,161
Quick Guide to OSPF 1. Building Shortest Path Tree Topology ► 2. Redistributing External Network Routes into OSPF Network In the previous post, we explained the procedure of how routers create their network topology maps using Router-LSA messages in an OSPF network, and build the shortest path trees based on link costs. Below, we will see how OSPF routers learn the routing informat...
07/01/2015
20,998
Quick Guide to OSPF ► 1. Building Shortest Path Tree Topology 2. Redistributing External Network Routes into OSPF Network This time, we will discuss how routers discover IP network topologies and build shortest path trees by using OSPF protocols. Certainly, routing protocols like OSPF are based on operating principles that are hard to understand if you are not a routing expert. Man...
05/06/2015
25,404
We will talk about call flow in IEEE 802.1X-based user authentication used in Korean network operators' Wi-Fi networks. Before we continue, let's take a look at what Korean operators' current Wi-Fi authentication are like first. KT provides the following SSIDs in its Wi-Fi Hotspots: ollehWiFi (with lock icon): Users are authenticated based on the IMSI stored in USIM of their...
02/26/2015
43,589
Switching and Routing 1. Switching and Routing for Dummies - Ethernet Switching 2. Switching and Routing for Dummies - IP Routing 3. Switching and Routing - Part 1. Router Architecture 4. Switching and Routing - Part 2. Packet Forwarding by IP Router 5. Switching and Routing - Part 3. L2 (Ethernet) Switching by L3 Switch 6. Switching...
08/01/2014
37,337
Switching and Routing 1. Switching and Routing for Dummies - Ethernet Switching 2. Switching and Routing for Dummies - IP Routing 3. Switching and Routing - Part 1. Router Architecture 4. Switching and Routing - Part 2. Packet Forwarding by IP Router 5. Switching and Routing - Part 3. L2 (Ethernet) Switching by L3 Switch 6. Switching...
07/11/2014
53,067
Switching and Routing 1. Switching and Routing for Dummies - Ethernet Switching 2. Switching and Routing for Dummies - IP Routing 3. Switching and Routing - Part 1. Router Architecture 4. Switching and Routing - Part 2. Packet Forwarding by IP Router 5. Switching and Routing - Part 3. L2 (Ethernet) Switching by L3 Switch 6. Switching...
06/18/2014
35,998
Switching and Routing 1. Switching and Routing for Dummies - Ethernet Switching 2. Switching and Routing for Dummies - IP Routing 3. Switching and Routing - Part 1. Router Architecture 4. Switching and Routing - Part 2. Packet Forwarding by IP Router 5. Switching and Routing - Part 3. L2 (Ethernet) Switching by L3 Switch 6. Switching...
05/23/2014
37,972
Switching and Routing 1. Switching and Routing for Dummies - Ethernet Switching 2. Switching and Routing for Dummies - IP Routing 3. Switching and Routing - Part 1. Router Architecture 4. Switching and Routing - Part 2. Packet Forwarding by IP Router 5. Switching and Routing - Part 3. L2 (Ethernet) Switching by L3 Switch 6. Switching...
05/08/2014
38,202
Switching and Routing 1. Switching and Routing for Dummies - Ethernet Switching 2. Switching and Routing for Dummies - IP Routing 3. Switching and Routing - Part 1. Router Architecture 4. Switching and Routing - Part 2. Packet Forwarding by IP Router 5. Switching and Routing - Part 3. L2 (Ethernet) Switching by L3 Switch 6. Switching...
04/28/2014
39,608
We will look into DHCP Option 82 used in the wireline networks of network operators today. Most of you are probably subscribing to a wireline Internet service provided by one of the network operators such as KT, SK Telecom or LGU+ (Korean Operators). When users subscribe to the Internet service, they pay a monthly fee to their network operator for using the Internet service. So, as a genera...
11/01/2013
30,575
Last time when we introduced a DHCP proxy agent through our previous blog post dated in September 1. 2013, we mentioned that this DHCP proxy agent can offer the benefits of enhanced security. So, we will look into these security-related functions in more detail today. As shown in the figure below, if there is a DHCP proxy agent in a network, all DHCP messages (used in IP address allocation...
10/01/2013
24,026
Now that we know what DHCP relay agents are, we will find out another DHCP agent, a DHCP proxy agent today. What a DHCP relay agent does is simply relay broadcast DHCP packets (DHCP Discover/Request) to DHCP server(s) located in other subnets whenever it receives packets from a DHCP client residing in that same subnet. On the other hand, a DHCP proxy agent not only relays the DHCP packets...
09/01/2013
23,890
We talked about the basic operations of DHCP in our previous blog post, "What is DHCP?”. Today, we will find out what kind of agent a DHCP relay agent is. Generally, DHCP messages are broadcasted. So, in order for the messages to be exchanged between a DHCP client (PC) and DHCP server, both the client and server have to reside on the same subnet. That is because routers do not fo...
08/01/2013
51,907
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