LAN/WAN Topology
LAN/WAN Topology and Configuration Plan
Introduction
This document presents an overview of the different configuration challenges, methods, and techniques required to implement a Local Area Network (LAN) and Wide Area Network (WAN). These are useful technologies that securely connect multiple LANs in separate geographical locations. When properly configured these networking technologies provide robust features, increased data transfer speeds, and secure data connectivity required by today’s companies.
Discussed is the use of Access Control Lists, Virtual Private Networks (VPN), Network Address Translation (NAT), Protocol Address Translation (PAT), IPv6, Open Shortest Path First (OSPF), Enhanced Interior Gateway Routing Protocol (EIGRP), Point-to-Point (PPP), Frame Relay, and Internet Protocol addressing schemes. Included are descriptions, configurations, implementation plans, and various debug commands to help administrators pinpoint and resolve connection issues.
WAN Layout
There is considerable planning required when connecting multiple geographically distant sites to create a WAN topology with security at the top of the list. The existing LAN topology, legacy equipment, incorporating new equipment, budget restraints, and security concerns help dictate the network structure. Circuit-Switched or Packet-Switched connection technologies are cost-effective options. Internet Service Providers (ISPs) used shared routes with other companies to distribute data. A secure (and expensive) method of inter-connecting locations are leased and dedicated lines. For example, an MPLS (T1) circuit is a secure, scalable choice for connecting two sites with diverse protocols and legacy equipment, but expensive because it is available only to the organization leasing the equipment and path lines.
Access Control Lists
Deciding how to implement system ACLs is determined by organizational needs. ACLs allow or prevent specified IP addresses, subnet masks, TCP, and UDP
Introduction
This document presents an overview of the different configuration challenges, methods, and techniques required to implement a Local Area Network (LAN) and Wide Area Network (WAN). These are useful technologies that securely connect multiple LANs in separate geographical locations. When properly configured these networking technologies provide robust features, increased data transfer speeds, and secure data connectivity required by today’s companies.
Discussed is the use of Access Control Lists, Virtual Private Networks (VPN), Network Address Translation (NAT), Protocol Address Translation (PAT), IPv6, Open Shortest Path First (OSPF), Enhanced Interior Gateway Routing Protocol (EIGRP), Point-to-Point (PPP), Frame Relay, and Internet Protocol addressing schemes. Included are descriptions, configurations, implementation plans, and various debug commands to help administrators pinpoint and resolve connection issues.
WAN Layout
There is considerable planning required when connecting multiple geographically distant sites to create a WAN topology with security at the top of the list. The existing LAN topology, legacy equipment, incorporating new equipment, budget restraints, and security concerns help dictate the network structure. Circuit-Switched or Packet-Switched connection technologies are cost-effective options. Internet Service Providers (ISPs) used shared routes with other companies to distribute data. A secure (and expensive) method of inter-connecting locations are leased and dedicated lines. For example, an MPLS (T1) circuit is a secure, scalable choice for connecting two sites with diverse protocols and legacy equipment, but expensive because it is available only to the organization leasing the equipment and path lines.
Access Control Lists
Deciding how to implement system ACLs is determined by organizational needs. ACLs allow or prevent specified IP addresses, subnet masks, TCP, and UDP
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