GNS3

Introduction GLBP or Gateway Load Balancing Protocol is developed by Cisco in 2005, provides both redundancy and load balancing for IP traffic. It can allow multiple routers to share the outgoing traffic against a single virtual gateway. Unlike HSRP or VRRP, which provide only redundancy, but don’t distribute traffic across the routers. While the GLBP…

Introduction What is VRRP? VRRP or virtual router redundancy protocol is an essential high-availability protocol like HSRP, which is used in computer networking to ensure continuous and seamless network operation. It provides backup routers in the event when there is any failure in gateways. Network engineers designing and maintaining VRRP for reliable communication and resilient…

EIGRP OTP Introduction We use EIGRP OTP or EIGRP Over the Top on those routers that are not directly connected. It is used in the situation when your router is connected to the ISP’s routers but you don’t want to involve the service provider’s router in your routing process. Moreover, it is also used when…

Introduction The EIGRP stub router is a feature of the EIGRP routing protocol through which we limit the number of routes from being advertisement. Moreover, It is also a helpful feature for EIGRP Stuck in active state when EIGRP queries its neighbors for its failed route. The router will send a multicast query to all…

Introduction Cisco developed EIGRP to improve efficiency and scalability in routing protocols. just as Cisco converted IGRP to EIGRP, Cisco also converted EIGRP from classic mode to EIGRP named mode to remove Deficiencies or defects in EIGRP classic mode. Classic mode is the old version of EIGRP, in which you have to enter protocol and…

Introduction casting means “sending data to the destination” ” but some terms are used with casting such as unicast, broadcast, and multicast. So when we send the data to a single destination, then we call it unicasting. Similarly, when the sender sends the data to all of the network’s destinations, it is called broadcasting. At…

RIP authentication is an important feature of RIP protocol because it identifies the legitimacy of routing updates which is exchanged between RIP’s speaking routers. It enables a router to ensure that only an authorized route is allowed to be installed into a router’s routing table. Authentication protects the network against unauthorized access, data breaches, and…

Introduction IP SLA is an IP Server Level Agreement. It is a feature of Cisco Router’s IOS to provide real-time network traffic monitoring performance and reporting. Moreover, it can report network metrics like basic connectivity, delay, jitter, packet loss frequency response time, etc.,             It is a great tool for ISPs to monitor their customer…

GNS3 is a famous network simulator through which network engineers and students make their network design, to test it before deployment. It supports many vendors” devices. it is an open-source software and is widely used in the industry. We can connect it to a real network or to our laptop, to test our network design….