Networking

How to Configure TACACS+ Server in Cisco Packet Tracer

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Securing access to network devices in real-world scenarios is of utmost importance to protect against vulnerabilities. This entails allowing only authenticated users to connect and configure these devices, either through Telnet or SSH or locally through console connections. One method to enable access security on network devices like routers or Switch is by configuring security

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How to Configure Radius Server in Cisco Packet Tracer

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In a real-world network, securing access to network devices is of paramount importance. This measure helps safeguard the devices from vulnerabilities by permitting only authenticated users to connect and configure network devices, whether through remote connections like Telnet or SSH, or through on-site connections like console connections. One approach to enhancing access security is by

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How to Configure ISP Failover With Default Routes Using IP SLA Tracking

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For a high-availability network, enterprise companies typically maintain connections with multiple internet service providers (ISPs) to ensure redundant internet connectivity. Among these ISPs, one is usually preferred over the others, often due to higher bandwidth or other factors. This preferred ISP serves as the primary link, while the connection from the second ISP acts as

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How to Configure Floating Static Route

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A floating static route is a backup route configured with a higher administrative distance than the primary route. It serves as a failover mechanism in case the primary route becomes unavailable. A floating static route is mainly used when there are two connections from a router to a subnetwork. The first connection may be using

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How to Configure OSPF Default Route on a Cisco Router

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In any network, a default route serves as a fallback option for routers to forward traffic if there is no specific path to the destination of the traffic in the routing table. When a router receives a packet, it searches its routing table for a route to the destination. If a route exists, the router

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How to Configure OSPF DR and BDR (Manipulating OSPF DR & BDR Election)

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Unlike point-to-point OSPF network, where OSPF routers exchange hello messages using the OSPF hello protocol to establish and maintain neighbor relationships, a multi-access network with three or more OSPF routers needs to elect an OSPF-designated router (DR) and a backup-designated router (BDR) in order to establish and maintain neighbor relationships. The DR and BDR are

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How to Configure OSPF Passive Interface on Cisco Router

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Whenever we advertise networks on a router in the OSPF configuration mode, the OSPF route advertisement will be enabled on all the interfaces of the router. However, it is good practice to disable the advertisement on interfaces connecting to networks that are not part of the autonomous system or interfaces that are idle. Disabling the

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How to Configure OSPF Backbone Area | How to Configure OSPF Area 0

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OSPF is a widely used dynamic routing protocol. It is an open standard protocol, meaning that any router will support it. It uses a link-state algorithm to dynamically learn the route to every subnet existing in a single autonomous system. In a multi-area OSPF network, the backbone area (Area 0) obtains the summarized route from

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How to Configure OSPF Multi-Area

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OSPF is a widely used and widely advertised routing protocol. It is an open standard, meaning that any router will support it. It is an interior gateway protocol, meaning it is designed to work within a single autonomous system. It is also a link-state dynamic routing protocol. As with other routing protocols, the goal of

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How to Configure Default Route on Cisco Router

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In any network, routers play the role of forwarding traffic from one network to another. They make decisions about where to send data packets based on routing tables, which contain information about known networks and the best paths to reach them. One important concept in routing is the default route, also known as the gateway

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