Wide variations of network traffic loads can disrupt the performance your network intelligence tools. While steady packet volumes often occur during normal load periods, spikes in network traffic can leave your tools blind when you need them most - during network outages and performance degradation. To overcome this challenge, you may deploy several duplicate tools for redundancy and high availability instances. But typically, the backup tools sit idle or don't operate near full-capacity, while the primary tool is oversubscribed and dropping packets. This issue may apply to performance and security analytics tools, WAN acceleration tools, and security protection tools.
To solve this problem, the VSS Network Packet Broker System includes Session-Aware Load Balancing technology, helping you to combine similar performance tools or security tools into a load balanced cluster. You can then specify how to distribute network traffic to each tool. The VSS system is session-aware, providing granular session of traffic distribution based on 10 different selectable session criteria. This maintains the awareness of each traffic flow, so each tool sees every packet within a given session or protocol conversation in the correct order.
As an example, you can aggregate four 1G service assurance tools to analyze up to 4G of network traffic distributed by the VSS system. If one of the four tools goes down, the VSS solution automatically redistributes the load to the three remaining tools. This self-healing technology is another way how VSS provides a more fault-tolerant approach to Network Packet Broker, all while getting more leverage of your existing tool infrastructure.
With VSS's highly granular, Session-Aware Load Balancing, you can:
- Monitor 10G networks with existing 1G monitoring tools, reducing monitoring tool upgrade costs.
- Prevent oversubscription to monitoring tools, ensuring even traffic distribution across multiple tools.
- Eliminate packet loss, especially monitoring 10G traffic with 1G tools.
- Maintain packet-order integrity, to deploy more advanced tool clusters with great fault-tolerance and cost savings
Session-Aware Load Balancing is one of the many capabilities performed in the VSS Traffic Processing Engine. The VSS Traffic Processing Engine is a key component of the VSS IntelliScale Architecture, and the primary differentiator of VSS Network Packet Broker.
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