Routing

Routing determines how to transport packets from the initiating host to the receiving host. The packet needs to determine a path through which it can travel from the sender to the receiver. The Routing Table in a router provides such a map to all packets. Each entry (or route) in the routing table indicates the destination address of the packet, where the next hop (or gateway) should be, which interface of the router the packet should go out to reach the destination, and hence provides a path selection. When a packet arrives at a router, it looks up the routing table to decide which path to take next. The router compares the destination address of the packet with the entries in the routing table, and finds out the associated interface and next hop from the matching route to forward the packet.

As the networks grow large and complex, the entire domain of routing can be divided into sub areas to provide better functionality and control. This routing hierarchy divides all the routers in the network into administrative regions called the Autonomous System (AS). Routers inside AS (i.e. intra-AS routers) run the same routing algorithm and only need to know the topology of their network. RIP and OSPF are examples of intra-AS routing algorithms. These algorithms are also referred to as Interior Gateway Routing Protocols. This router supports RIP routing algorithm.

In the internetworking environment there are typically more than one path connecting the two end hosts. The dynamic routing algorithm selects the “best” path that has the “least cost” for transporting. RIP uses Path Length routing metric to determine the best path. Path length is the sum of the costs associated with each link. Path Length is commonly known as the hop count, or the number of routing devices (i.e. routers) that a packet takes to travel from the source to its destination. The cost of a link may be determined based on the below parameters:

•Bandwidth – Bandwidth is the traffic capacity of a path, rated by “Mbps”.

•Load – Load refers to the usage of a router. The usage can be evaluated by CPU utilization and the throughput.

•Delay – Delay is the time it takes to move a packet from the source to the destination. The time depends on many factors, such as the bandwidth, load, and the length of the path.

In case of a device or a link failure, the router looses its “best” route (associated with that link) and relies on the routing algorithm to select the next best route available in the routing table. This is a continuous process to keep the internetworking functional and help the router select the correct path at all times.

Dlink DRO-210i User Guide

DRO-210i specifications

The D-Link DRO-210i is an innovative smart security camera designed to bring peace of mind to homeowners and businesses alike. With its sleek design and advanced features, the DRO-210i stands out as a reliable surveillance solution that caters to a range of security needs.

One of the main features of the DRO-210i is its high-definition video streaming capability. With a resolution of up to 1080p, users can enjoy crisp and clear video footage, ensuring that every detail is captured. This camera is equipped with a wide-angle lens, offering a 130-degree field of view, which allows for comprehensive monitoring of large areas, making it ideal for both indoor and outdoor use.

The DRO-210i utilizes advanced infrared night vision technology, enabling it to capture clear images even in complete darkness. This feature ensures that security is maintained 24/7, offering peace of mind regardless of lighting conditions. The camera automatically switches to night mode when it detects low light, ensuring continuous monitoring without manual intervention.

Another standout characteristic of the DRO-210i is its motion detection capabilities. The camera features customizable motion zones and alerts, allowing users to define specific areas for monitoring. When motion is detected, the camera can send real-time alerts to the user's smartphone or email, ensuring prompt responses to any potential security threats.

The integration of two-way audio allows for real-time communication through the camera. Users can listen and speak through the camera's built-in speaker and microphone, providing an added layer of security. This feature is particularly useful for engaging with visitors or deterring potential intruders.

For convenient storage options, the DRO-210i supports both local and cloud storage. Users can insert a microSD card for local recording or opt for D-Link’s cloud storage service for easy and secure access to footage from anywhere in the world. This flexibility ensures that important recordings are safely stored and easily retrievable.

The camera's compatibility with smart home systems is an essential aspect of its design. The DRO-210i works seamlessly with various smart home ecosystems, allowing users to integrate it into their existing setups, enhancing their overall smart home experience.

In summary, the D-Link DRO-210i is a feature-rich, user-friendly security camera equipped with high-definition video, night vision, motion detection, two-way audio, and flexible storage options. Its compatibility with smart home technologies makes it an ideal choice for those seeking a comprehensive surveillance solution that not only enhances security but also integrates with their lifestyle.