Internet & WAN Connectivity
Internet, a computer based global information system, has become so massive to provide easy accessibility & affordability to people. Increased availability through modes like wired and wireless has brought tremendous transformations in internet development. Technological advancements have made people to perform their tasks from home and leisure places. Internet is the major contributor in making the world a global village. It can be accessed at a lesser bandwidth of few kilobits from cellular networks to higher bandwidth of Gigabits transmission using fiber links. Employees can connect to offices on mobility and even from remote locations where one could not find any internet gateways near to visibility. Even when people prepare to bring in their work contributions, there should be excess capacity in a WAN infrastructure, or else the cost associated by time would affect a business performance. During this circumstance comes the need for two or multiple WAN connections.
Some of the essential functionalities and features of Dual WAN or Multi WAN Routers:
Link Failover - Increases redundancy & reliability
Load Balancing - Bonds bandwidths available from multi service providers thereby increase in data transfer speed
VPN - Brings all LANs at next hop by connecting offices at multiple locations
Firewall like protection - Policy based routing, Access Rules, Port Forwarding, Port Triggering, URL Filtering, Denial-of-service , etc
Additional Functionalities
QoS
Traffic Shaping & Optimization - Data Compression
IPSec - IP Security in VPN capability with Data Encryption Standard (DES) and Triple DES (3DES) encryption
Points to notice while considering
Device failover - Risk associated with network outage is higher because of hardware failure
Maximum throughput support - A minimal hardware could not bring in the maximization benefit
Static Routing Ability - It is the ability to define a metric for static route to destination and it achieved by manually adding routes to the routing table. This ability supports the routing protocol.
Bandwidth Aggregation - This increases the network speed and boost throughput. Cable and DSL are economical internet links, combining these services offers faster network speed at the same time cost effective.
Authentication Algorithms -MD5 and SHA (SHA-0, SHA-1, and SHA-2) are widely trusted Secure Hash algorithms.
Site Load Balancing - It can utilize all lines available at each site by distributing the traffic between multiple sites. Moreover, Site load balancing built on SmartDNS technology can assure resiliency and continuity in business.
Advantages & Benefits of Dual WAN devices
No need of human interference during link failures
Intelligent algorithms make use of bandwidth available on spare links
Enterprise applications could be made available at remote locations
Data transmission over multiple lines is secured without any compromise
Ease of configuration, management & monitoring from LAN and remote network is possible
Single hardware enables faster ROI
Superior connectivity by using two WAN links
Enabling business continuity by ensuring consistent uptime
Demand for better network connection in business makes two or more links better than one. With multiple WAN connections, organizations can provide effective Dual-WAN speeds for all their LAN users. Furthermore, dual WAN devices assure fault-tolerance, redundancy, failover capabilities and lots more that assure continuous Internet access even when an ISP link is down.
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