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Best Practices for Monitoring Service Provider Networks Using SPAN Ports

Best Practices for Monitoring Service Provider Networks Using SPAN Ports

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Monitoring Challenges for Service Providers

One of the challenges for service providers is to control costs while maintaining a high level of quality within their networks. Some techniques include over-provisioning SPAN port connections for IP-based traffic. This allows the service provider to make sure that there is minimal to no degradation of the packet-based traffic from those SPAN ports.

At the same time, the extensive use of SPAN and tap ports to capture the appropriate data creates other problems for service providers in regards to getting the proper monitoring data to security and monitoring tools. Mainly because monitoring tools only have a limited number of input ports but the data the tool needs may come from multiple locations spread across the network. This is where technology, like a network packet broker (NPBs) can be used to aggregate out-of-band monitoring data, filter the data as needed, and then distribute that data to the proper security and monitoring tools so that engineers can maintain the network.

  • A visibility architecture with network packet brokers can be used effectively to: 
  • Aggregate data from multiple sources (SPAN ports, taps, virtual machines) 
  • Lower the cost of data aggregation 
  • Optimize security and monitoring tool performance 
  • Improve security and compliance initiatives

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