Routing & Switching

Dr. Lavian offers expert consulting services for routing protocols, routers, switch architecture and design, standards, and network protocols. His expertise in routing and switching includes communications systems, LAN, WAN, and networking infrastructure.

Dr. Lavian has extensive hands-on experience and has conducted extensive research in telecommunications, network communications, and Internet technologies. Therefore, he designed software for switches, routers, and network communications equipment and developed systems and architectures for managing them. Dr. Lavian offers consulting services regarding routing, switching, and communication equipment architectures and design.

He has the necessary research and development background to review and analyze the technical aspects of routing and switching within the broader contexts of network communications systems and Internet architecture and protocols.

A router is a networking device that forwards data packets between computer networks. The router switching fabric is the heart of the router; it connects the input and output ports. Router architecture is designed in such a way that the routers  equip to perform two main functions:

  • Process routable protocols.
  • Use routing protocols to determine the best path.

Network infrastructure comprises the hardware and software resources that enable network connectivity, communication, operations, and management of enterprise and service provider networks. Therefore, It provides the communication path and services between users, processes, applications, services, and devices.

Network infrastructure is Telecomm NET’s primary area of expertise grounded in academic knowledge and hands-on industry experience in product development and innovation.

Drawing on experience in researching, designing, developing, and implementing real-world network software, Dr. Lavian’s expertise includes:

  • Wired networking: core and edge routers, switches, load balancers, and SD-WAN.
  • Wireless networking: Access Points, Wireless Controllers, and Data and Control Planes.
  • Networking principles, software, and hardware architectures, ASIC, firmware, high-speed backplanes, switch fabric, control planes, data planes, blocking and non-blocking architectures, priority queuing, time-to-live, packet addressing, and routing/switching table structures.
  • Routers, switches, gateways, routing Switching expert services, IETF RFC standards that define relevant functional architectures, protocol specifications, and forwarding.
  • Enterprise and Service Provider cable networks Modems, Headend, and Fiber Optic DWDM infrastructure.
  • Network Security: Firewalls, VPNs, IPSec, Tunneling, Content Filtering, and Security Gateways.
  • Bandwidth throttling, Quality of Service, QoS, Priority queuing, and Traffic Classification.
  • Network Management: MIBs, Traps, Logs, SNMP, FCAPS, Monitoring, and Troubleshooting.
  • Industry standards: IETF, IEEE, ITU-T, 3GPP, Wi-Fi, ISO, and IEC.
  • Communications protocols: TCP/IP, LDAP, IGMP, ARP, DNS, DHCP, RIP, IGRP, OSPF, GRE, BGP, and IS-IS.
  • Cable communications protocols: DOCSIS and CATVS.
  • OSI layers 1-7, including technologies and standards in product implementations.
  • LAN and WAN technologies: IEEE 802.1, 802.3, 802.11, 802.15.
  • Public switched telephone networks, circuit switching, SS7, SDH, and SONET.
  • IPv4, IPv6, LAN, WAN, VPN, tunneling, routing protocols, RIP, BGP, MPLS, OSPF, multicast, DNS, QoS, switching, packet switching, layer-2 switching, layer-3 switching, layer-4 switching, application switching, load balancing, and firewalls.

Network Architecture

Networks may be wired or wireless. A wireless network is a computer network that uses wireless data connections between network nodes. Wireless networking eliminates cables and wires while providing the same capabilities as a wired network. There are two primary uses for wireless networking: private use within a single building or group of buildings, and public use, for example, connecting to public access points, most often in urban areas. However, wireless networking is found in homes, enterprise campuses, and service provider carrier networks.

Moreover, The broadband cable network is a typical universally used internet-to-home technology. The term distinguishes old network architectures, especially the ‘wired pair’ telephone line systems. Broadband cable has the infrastructure for delivering high-speed data and digital services to subscriber locations. It is sometimes described as ‘always on’ because it uses a point-to-multipoint topology.

OSI Communication Layers

Networks Router

Computer Networks use the OSI model to allow hardware and software to communicate effectively. The OSI model utilizes to communicate, organize, and run information through the network. Therefore, This model lays out separate layers for networking functions such as flow control and error recovery. Layer 1 – Physical Layer; Layer 2 – Data Link; Layer 3 – Network; Layer 4 – Transport; Layer 5 – Session; Layer 6 – Presentation; and Layer 7 – Application. However, each model layer performs a specific function, allowing disparate hardware and software communications systems to interact effectively.