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Layer 2 Configuration Guide, Cisco Catalyst IE3x00 Rugged, IE3400 Heavy Duty, and ESS3300 Series Switches

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What problems does Layer 2 protocol tunneling solve?
How do you configure tunneling on SP edge ports and EtherChannels?
How do you monitor Layer 2 protocol tunneling status?

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Layer 2 Configuration Guide, Cisco Catalyst IE3x00 Rugged, IE3400 Heavy Duty, and ESS3300 Series Switches

What problems does Layer 2 protocol tunneling solve?
How do you configure tunneling on SP edge ports and EtherChannels?
How do you monitor Layer 2 protocol tunneling status?

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About this content

Configuring Layer 2 Protocol Tunneling

Information about layer 2 protocol tunneling
Configure layer 2 protocol tunneling
How to configure layer 2 protocol tunneling for EtherChannels

Configuring SPAN and RSPAN

Information about SPAN and RSPAN
Configuring SPAN and RSPAN
How to configure SPAN and RSPAN

Configuring IEEE 802.1Q Tunneling

IEEE 802.1Q tunneling
Configure IEEE 802.1Q tunneling
Monitor tunneling status
Example: configure an IEEE 802.1Q tunneling port

Configuring VLAN Mapping

VLAN mapping
Configuration guidelines for VLAN mapping
How to configure VLAN mapping

Loop Detection Guard

Loop Detection Guard

Layer 2 Configuration Guide, Cisco Catalyst IE3x00 Rugged, IE3400 Heavy Duty, and ESS3300 Series Switches

Configuring Layer 2 Protocol Tunneling

Updated: August 31, 2025

Explains how to configure Layer 2 protocol tunneling to transport customer control protocol traffic across service-provider networks.

Information about layer 2 protocol tunneling

Describes the Layer 2 protocol tunneling feature that allows service providers to tunnel Layer 2 control protocols across their networks while maintaining protocol transparency for customer networks.

Configure layer 2 protocol tunneling

Configure Layer 2 protocol tunneling to enable protocol tunneling for desired protocols on IEEE 802.1Q tunnel or trunk ports.

How to configure layer 2 protocol tunneling for EtherChannels

Describes how to configure Layer 2 protocol tunneling for EtherChannels on both service provider edge devices and customer devices to enable protocol transparency across the network.

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