netwyman

Routing is a process in which the layer 3 devices (either router or layer 3 switch) finds the optimal path to deliver a packet from one network to another. Dynamic routing protocols uses metric, cost and hop count to identify the best path from the path available for destination network. Below are the types of Routing Protocol: - Distance Vector Routing Protocol RIP IGRP - Link State Routing Protocol OSPF IS-IS - Advanced Distance vector routing protocol EIGRP Distance Vector Routing Protocol: Distance vector protocols usually send the complete routing table to each neighbor (a neighbor is directly connected router that runs the same routing protocol). They employ some version of Bellman-Ford algorithm to calculate the best routes. Compared with link state routing protocols. Distance vector protocols are easier to configure and require little management, but are susceptible to routing loops and converge slower than the link s...

Zero touch provisioning or so called ZTP is the way to automatic configuration on Cisco vEdge devices for which almost zero manual intervention required. If we talk about the Zero touch provisioning, Networking traditionally has been a complex and manual for IT. The advent of SDN changed it all. Out of all benefits of SD-WAN, ZTP is among the top three. With ZTP, networking is automated and an intent driven process. Zero touch provisioning is a switch, that simplifies provisioning and configuration of devices automatically without any manual intervention. The switch (ZTP) downloads and runs the centrally stored configuration, which it acquires by sending a request through DHCP or TFTP. ZTP seamlessly allows IT to update OSs, deploy patches and bug fixes and embed additional features prior to connection. Using Scripts, ZTP can also connect to configuration management platforms or a custom tool. ZTP relies on below service which are: A license file provided ...

Gateway Load Balancing Protocol (GLBP) is a Cisco proprietary protocol that attempts to overcome the limitations of existing redundant router protocols by adding basic load balancing functionality. In addition to being able to set priorities on different gateway routers, GLBP allows a weighting parameter to be set. Gateway Load Balancing Protocol Gateway Load Balancing Protocol (GLBP) is one of First Hop Redundancy Protocol (FHRP) which provides redundancy like other First Hop Redundancy Protocol, also provides load Balancing. It is a Cisco proprietary protocol which can perform both functions. It provides load Balancing over multiple routers using single virtual IP address and multiple virtual Mac address. GLBP allow automatic selection and simultaneous recovery from first hop router failures. GLBP provides load balancing over multiple (router) gateways using a single virtual IP address and multiple virtual MAC addresses. The bandwidth/traffic load is shared between multiple ro...

Secure data traffic flow between vEdges, IPSEC is the mode of transport for data traffic to flow from one vEdge to another vEdge as overlay network. IPsec tunnels that run the Internet Key Exchange (IKE) protocol provide authentication and encryption to ensure secure packet transport. Internet Protocol Security is a secure network protocol suite that authenticates and encrypts the packets of data to provide secure encrypted communication between two computers over an Internet Protocol network. It is used in virtual private networks. Tunnel Redundancy: The interface is the IPsec tunnel interface in VPN 0. You can configure one or two IPsec tunnel interfaces. If you configure two, the first is the primary IPsec tunnel, and the second is the backup. With two interfaces, all packets are sent only to the primary tunnel. If that tunnel fails, all packets are then sent to the secondary tunnel. If the primary tunnel comes back up, all traffic is moved back to the primary IPsec tunnel...

Here I am going to discussion about Ether-Channel standards name as PAgP and LACP protocol. So, first of all I am giving you some details for what is Ether-Channel. What is Ether-Channel? Ether-channel port channel is the way to connect two different switches with two or more links and make them bundled in such a way that it looks like to be a single link. It is used to provide high speed links and redundancy. Maximum of 8 links can be aggregated to form a single logical link. Ether Channel PAgP Protocol: PAgP is a Cisco proprietary negotiation protocol. Port Aggregation Protocol is used to achieve the same goal as LACP. also it is used for the automated, logical aggregation of Ethernet switch ports, Which know n as an Ethernet Channel. This protocol over Static configuration is that is one, it does a configuration check on participating interfaces, as well as confirms that the neighboring interfaces are also using PAgP. That means that it guarantees that interfaces that don’t...

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...

What is BGP? Border Gateway Protocol (BGP) is used to Exchange routing information for the internet and is the protocol used between ISP which are different ASes. Border Gateway Protocol is the protocol that makes the Internet work. Networks or autonomous systems that need to interact with each other do so through peering, which is made possible with BGP. BGP - Border Gateway Protocol Border Gateway Protocol (BGP) is the postal service of the Internet. When someone drops a letter into a mailbox, the postal service processes that piece of mail and chooses a fast, efficient route to deliver that letter to its recipient. Similarly, when someone submits data across the Internet, BGP is responsible for looking at all of the available paths that data could travel and picking the best route, which usually means hopping between autonomous systems. BGP is the protocol that makes the Internet work. It does this by enabling data routing on the Internet. When a user in Singapore...