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The Webex Backbone: Because Every Millisecond Counts

Sep, 10, 2018 Hi-network.com

My global team of infrastructure and cloud engineers spans more than 22 locations worldwide. When I have my team meetings, people join from many continents using Webex. And because video meetings are more productive than just audio meetings, I require my team to use video.

Now imagine having users across the globe -some at home, some at their workplace, some traveling -trying to join a video meeting. If someone doesn't experience high-quality video in the meetings, they're more likely to "fall back to audio" to get their job done. Worse yet, they may leave the meeting entirely because they felt they weren't getting value.

Maybe more than any other, our team understands what it takes to make this happen. It just so happens that we run the Webex Platform. We're a great use case for our own products. And we're constantly working to bring you the best possible experience no matter where your people connect.

The Achilles heel for video meetings is usually the connectivity. The path between you and the server in the cloud can be lossy, jittery, and incur high latency. Webex's Globally Distributed Meetings architecture lets you connect to the nearest data center, with the lowest possible latency to that server.

Now imagine a meeting where your participants are in Asia, Europe, and North America. They each connect the nearest data center. A meeting requires that each of these data centers talk to each other. The more data centers, the more potential challenges. The path between two or more data centers could also have high packet loss, jitter, or latency.

How do we solve it? We route all meetings traffic on a managed network optimized for media. This approach spans the globe and provides low loss, low jitter, and high-bandwidth connectivity between you and the closest data center, and between data centers. It's a unique approach that only Cisco can take because of our deep networking and security heritage. Cisco Webex is the only service built and optimized for real-time media.

We've been working for the past decade to build out the Webex backbone as the engine behind Webex Meetings and Webex Teams. This global pillar connects the entire world of Webex with a high-quality, redundant, media-optimized network. So now, when you have global meetings, the traffic hops onto the Webex backbone like a "hot potato" and we can manage routing your traffic. Hot Potato routing lets us take the packet off the public Internet as soon as possible and carry it on our private backbone. This allows us to provide you with low packet loss, low jitter, and low-latency/high-bandwidth connectivity.

The Webex backbone connects all our data centers with redundant paths at scale. We have some data center locations that are connected using dual 100G links. Traffic on this backbone is optimized for media and we remove as many choke points as possible while still providing a highly secure network. As Webex Meetings traffic continues to grow, this network is monitored by 24

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