Is Branch Office Internet Access is Local or Centralized ?Multiprotocol Label Switching (MPLS) and the Internet are by far the two most heavily used WAN services today. While IT organizations will increase their use of both this year, they will make a relatively greater increase in their use of the Internet.
The Traditional Approach :
Traditionally, branch-office Internet traffic has been carried on the enterprise’s network to a central site, where it is handed off to the Internet. This approach has the advantage of letting IT organizations exert more control over their Internet traffic However, the centralized approach also has several disadvantages. First, it boosts the amount of traffic transiting the enterprise WAN, adding to WAN costs. This drawback will become increasingly important as the relative amount of Internet traffic increases, in turn driving up the cost to carry this traffic on the enterprise WAN.
