New Skills

New Training: Configure and Verify SPAN/RSPAN/ERSPAN

by Team Nuggets
New Training: Network Topologies, Types, and Technologies picture: A
Published on February 22, 2021

In this 5-video skill, CBT Nuggets trainer Jeremy Cioara teaches you how to configure and troubleshoot common VLAN trunking issues. Learn core trunking concepts, and gain hands-on skills as you configure and troubleshooting trunking in a lab environment. Watch this new Cisco training.

Watch the full course: Cisco CCNP Enterprise Core

This training includes:

  • 5 videos

  • 30 minutes of training

You’ll learn these topics in this skill:

  • Introduction – Configure and Verify SPAN, RSPAN, ERSPAN

  • Exploring the span of SPAN

  • Configuring SPAN

  • Configuring RSPAN

  • Configuring ERSPAN

What are the Differences Between SPAN, RSPAN and ERSPAN?

SPAN (Switch Port Analyzer) is a feature that is found in Layer 2 networks that lets you duplicate traffic from a port to one that is connected to a network analyzer. This is done for the purpose of analyzing or troubleshooting network performance or utilization and is also known as port mirroring or port monitoring.

RSPAN (Remote SPAN) is a type of SPAN. An RSPAN duplicates traffic from a port onto a VLAN that has been dedicated for an RSPAN session. The VLAN then transports session traffic to multiple switches. By using RSPAN, you can centralize your network capturing devices.

ERSPAN (Encapsulated Remote SPAN) is a Cisco-proprietary form of SPAN. It adds generic routing encapsulation to traffic and allows you to extend it over Layer 3 domains. It is available only on select Cisco products.

Another type of SPAN is a Local SPAN. This duplicates traffic from one port to another on the same switch.

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