PoP

PoP

The Future of the Cloud

Published in Marcus K. Weldon, The Future X Network, 2018

For a round trip time (RTT) of 100 ms and a typical TCP window size of 64 kb, this results in a maximum TCP throughput of just over 5 Mb/s. Given a typical bandwidth of 6 Mb/s for a 1080p stream and over 15 Mb/s for a 4k stream, content providers are challenged to deliver high-quality content without resorting to various TCP optimization techniques. Reducing this latency to 20 ms increases the maximum TCP throughput to over 25 Mb/s. Furthermore, from an economic standpoint, it is much more effective to deliver high-bandwidth unicast streams from nearby caches than to originate millions of streams from a regional data center where the traffic must be carried over the internet (or a private transport network). For these reasons, global content and CDN providers are continuously expanding their footprint to bring CDNs as close as possible to end users by making arrangements with local internet service providers (ISPs) to place caches inside of (or directly connected to) public and private networks at localized points of presence (PoPs).

A Survey on Packet Switching Networks

View Article

Journal Information

Published in IETE Journal of Research, 2022

Abdullah Ali Bahattab

The DTEs are mainly the routers on each LAN when the carriers use frame relay for connecting to LANs. The router uses a serial connection like the T1/E1 leased line to connect with the carrier's frame relay switch at the closest point-of-presence (POP). A DCE device is a Frame Relay switch. DCEs deliver frames to other DTEs via network switches, transporting frames from one DTE across the network [12] Figure 13.

Explore chapters and articles related to this topic

The Future of the Cloud

A Survey on Packet Switching Networks