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Traffic Aware Routing

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Whenever there is congestion in the network, there will be one strategy for network-wide congestion control and traffic awareness. Congestion can be avoided by designing a network that is well-suited to the traffic it transports. Congestion develops when more traffic is targeted but only a low-bandwidth link is available.

Traffic-aware routing’s main objective is to choose the optimum routes by taking the load into account. It does this by setting the link weight to be a function of the fixed connection bandwidth and propagation delay, traffic awareness, as well as the variable observed load or average queuing time.

Example

Consider a network that is separated into two regions, North and South, connected by links E1F1 and EF.

Traffic Aware Routing

Traffic Aware Routing

Step 2: In this scenario, assume that Link E1F1 is heavily congested due to the majority of traffic between East and West. Queueing delays are significant, and there’s a need to factor in queueing time when calculating the shortest path.

Step 3: After updating routing tables to account for queueing delays, most of the North-South traffic will now flow through the EF link, as it appears to be a faster route.

Step 4: This shift in traffic may lead to significant fluctuations in routing tables, causing unpredictable routing behavior and potential network issues.

Step 5: An alternative approach is to focus on bandwidth and propagation delay rather than load when adjusting routing weights. This helps alleviate the problem and prevents routing oscillations.

Step 6:The following two strategies can help find a successful solution

Multipath Routing: The routing scheme to shift traffic across  all the routes.

As a result, it may oscillate greatly, which could cause inconsistent routing and a variety of other issues. This won’t happen if the load is disregarded in favour of just bandwidth and propagation delay. In an effort to reduce routing oscillations, weights are changed with a range but no additional load is added. A successful solution can be achieved using two strategies. First, there is multipath routing, in which there may be several routes from one point to another.

Features

  1. It is a congestion technique.
  2. These roots can be changed in accordance with traffic patterns because, as network users, we can sleep in various time zones throughout the day.
  3. As there are heavily used paths so roots can be changed to shift traffic away.
  4. Traffic can be split across multiple paths.

FAQs on Traffic Aware Routing

1. Are there privacy concerns with traffic-aware routing?

Users who share their location information with traffic-aware routing apps could be concerned about privacy issues. To safeguard user privacy, the majority of apps anonymize and aggregate data, nonetheless.

2. Can I use traffic-aware routing for public transportation?

Yes, many navigation apps offer traffic-aware routing for various modes of transportation, including driving, walking, biking, and public transit. They provide information on bus or train schedules, delays, and real-time updates.

3. Is traffic-aware routing available worldwide?

Traffic-aware routing is more commonly available in urban areas and regions with advanced traffic infrastructure. Availability may vary in rural or less-developed areas.


Last Updated : 06 Oct, 2023
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