Characteristics Of Source Ports; Span Destinations - Cisco Nexus 9000 Series Configuration Manual

SPAN Destinations

• VLANs
• Satellite ports and host interface port channels on the Cisco Nexus 2000 Series Fabric Extender (FEX)
Note A single SPAN session can include mixed sources in any combination of the above.

Characteristics of Source Ports

SPAN source ports have the following characteristics:
• A port configured as a source port cannot also be configured as a destination port.
• If you use the supervisor inband interface as a SPAN source, the following packets are monitored:
SPAN Destinations
SPAN destinations refer to the interfaces that monitor source ports. Destination ports receive the copied traffic
from SPAN sources. SPAN destinations include the following:
• Ethernet ports in either access or trunk mode
• Port channels in either access or trunk mode
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When you specify the supervisor inband interface as a SPAN source, the device monitors
Note
all packets that arrive on the supervisor hardware in the ingress direction.
Note When you specify a VLAN as a SPAN source, all supported interfaces in the VLAN
are SPAN sources.
VLANs can be SPAN sources only in the ingress direction.
Note
These interfaces are supported in Layer 2 access mode and Layer 2 trunk mode. They
Note
are not supported in Layer 3 mode, and Layer 3 subinterfaces are not supported.
Note FEX ports are supported as SPAN sources in the ingress direction for all traffic and in
the egress direction only for known Layer 2 unicast traffic.
◦ All packets that arrive on the supervisor hardware (ingress)
◦ All packets generated by the supervisor hardware (egress)
Configuring SPAN