Erspan Destinations; Erspan Sessions - Cisco Nexus 7000 Series Configuration Manual

Configuring ERSPAN
• A port configured as a source port cannot also be configured as a destination port.
• ERSPAN does not monitor any packets that are generated by Supervisor 1, regardless of their source.

ERSPAN Destinations

Destination ports receive the copied traffic from ERSPAN sources.
ERSPAN destination ports have the following characteristics:
• Destinations for an ERSPAN session include Ethernet ports or port-channel interfaces in either access
• A port configured as a destination port cannot also be configured as a source port.
• A destination port can be configured in only one ERSPAN session at a time.
• Destination ports do not participate in any spanning tree instance or any Layer 3 protocols.
• Ingress and ingress learning options are not supported on monitor destination ports.
• F Series module core ports, Fabric Extender host interface (HIF) ports, HIF port channels, and fabric

ERSPAN Sessions

You can create ERSPAN sessions that designate sources and destinations to monitor.
The figure below shows an ERSPAN configuration.
Figure 6: ERSPAN Configuration
This limitation does not apply to Supervisor 2.
or trunk mode.
port-channel ports are not supported as ERSPAN destination ports.
Cisco Nexus 7000 Series NX-OS System Management Configuration Guide
ERSPAN Destinations
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