•
Troubleshooting SPAN session issues, page 190
•
Displaying SPAN Information, page 191
•
Configuration Example for a SPAN ACL, page 192
•
Configuration Example for SPAN-on-Latency Session, page 192
Information About SPAN
SPAN Sources
SPAN sources refer to the interfaces from which traffic can be monitored. The Cisco Nexus device supports
Ethernet, Fibre Channel, virtual Fibre Channel, port channels, SAN port channels, VSANs and VLANs as
SPAN sources. With VLANs or VSANs, all supported interfaces in the specified VLAN or VSAN are included
as SPAN sources. You can choose the SPAN traffic in the ingress direction, the egress direction, or both
directions for Ethernet, Fibre Channel, and virtual Fibre Channel source interfaces:
• Ingress source (Rx)—Traffic entering the device through this source port is copied to the SPAN destination
port.
• Egress source (Tx)—Traffic exiting the device through this source port is copied to the SPAN destination
port.
VSAN ports cannot be configured as ingress source ports in a SPAN session.Note
Characteristics of Source Ports
A source port, also called a monitored port, is a switched interface that you monitor for network traffic analysis.
The switch supports any number of ingress source ports (up to the maximum number of available ports on
the switch) and any number of source VLANs or VSANs.
A source port has these characteristics:
•
Cannot be monitored in multiple SPAN sessions.
•
Cannot be a destination port.
•
Can be configured with a direction (ingress, egress, or both) to monitor. For VLAN and VSAN sources,
the monitored direction can only be ingress and applies to all physical ports in the group. The RX/TX
option is not available for VLAN or VSAN SPAN sessions.
•
Can be in the same or different VLANs or VSANs.
•
For VLAN or VSAN SPAN sources, all active ports in the source VLAN or VSAN are included as
source ports.
Cisco Nexus 5600 Series NX-OS System Management Configuration Guide, Release 7.x
176 OL-31641-01
Configuring SPAN
Information About SPAN
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