netwyman

What is LLDP? The link layer discovery protocol ( LLDP ) is an open and extendable part of the Internet protocol suite used in IEEE 802 to advertise a device’s identity and abilities, as well as other devices connected within the same network. LLDP Link Layer Discovery Protocol LLDP is mainly used in wired Ethernet-connected devices to facilitate management of network resources and simplify networking tasks for administrators in a multi-vendor network. The protocol’s multi-vendor support enables network discovery of devices and management tools like Simple Network Management Protocol (SNMP) in a network made up of devices from different manufacturers. LLDP makes it unnecessary to use a larger number of proprietary protocols to support a multi-vendor network or, on the other hand, limit oneself to the hardware of a single vendor. LLDP is also known as Station and Media Access Control Connectivity Discovery, as specified in IEEE 802.1AB. Simil...

Dynamic routing Protocol performs the same function as static routing Protocol does. In dynamic routing Protocol, if the destination is unreachable then an another entry, in the routing table, to the same destination can be used. One of the routing Protocol is EIGRP. EIGRP: Enhanced Interior Gateway Routing Protocol (EIGRP)  is a dynamic routing Protocol which is used to find the best path between any two layer 3 device to deliver the packet. EIGRP works on network layer Protocol of osi model and uses the protocol number 88.It uses metric to find out best path between two layer 3 device (router or layer 3 switch) operating EIGRP.   EIGRP uses the Diffusing-Update Algorithm (DUAL) to determine the most efficient ( least cost ) route to a destination. A DUAL  finite state machine  contains decision information used by the algorithm to determine the least-cost route (which considers distance and whether a destination path is loop-free). Routers running EIGR...

Network topology is the arrangement of the elements of a communication network. Network topology can be used to define or describe the arrangement of various types of telecommunication networks, including command and control radio networks, industrial fieldbuses and computer networks. Types of Network Topology Mesh Topology Star Topology Bus Topology Ring Topology Hybrid Topology Mesh Topology mesh topology as an every device is connected to another device via particular channel. Every device is connected with another via dedicated channels. These channels are known as links. If suppose, N number of devices are connected with each other in mesh topology, then total number of ports that is required by each device is ​ N-1. In the Figure 1, there are 5 devices connected to each other, hence total number of ports required is 4. If suppose, N number of devices are connected with each other in mesh topology, then total number of dedicated links required to connect the...

What is CDP? – Cisco Discovery Protocol? The Cisco Discovery Protocol (CDP) is developed by Cisco to share information about other directly connected Cisco devices, such as the operating system version and IP address. CDP protocol is a Cisco proprietary Layer 2 (Data Link Layer) network protocol. Through the CDP, administrator can gather hardware and protocol information about neighbor devices. CDP protocol is default-enabled on all Cisco devices including routers and switches and runs on all LAN and WAN media that support Sub network Access Protocol (SNAP).   CDP Cisco Discovery Protocol Cisco Discovery Protocol (CDP) messages received from a neighbor Cisco device are not forwarded to any other devices by default. It means that Cisco Discovery Protocol (CDP) is passed only to directly connected Cisco devices. Each Cisco device (which supports Cisco Discovery Protocol (CDP)) stores the messages received from neighbor devices in ...