350-601 · Question #65
The Cisco Nexus 1000v Series switches can configure traditional SPAN sessions. Which three statements about the local SPAN source ports are true? (Choose three)
The correct answer is A. It can be port type Ethernet, virtual Ethernet, or port-channel. B. It can be configured to monitor the direction of the traffic. D. It cannot be on a different host VEM as the destination port.. For local SPAN on Cisco Nexus 1000v, source ports can be various Ethernet types and their traffic direction can be monitored, but the source and destination ports must reside on the same host VEM.
Question
The Cisco Nexus 1000v Series switches can configure traditional SPAN sessions. Which three statements about the local SPAN source ports are true? (Choose three)
Options
- AIt can be port type Ethernet, virtual Ethernet, or port-channel.
- BIt can be configured to monitor the direction of the traffic.
- CIt must be in the same VLAN.
- DIt cannot be on a different host VEM as the destination port.
- EIt cannot be a port profile.
- FIt must be in the same VSAN.
How the community answered
(24 responses)- A92% (22)
- C4% (1)
- E4% (1)
Why each option
For local SPAN on Cisco Nexus 1000v, source ports can be various Ethernet types and their traffic direction can be monitored, but the source and destination ports must reside on the same host VEM.
Cisco Nexus 1000v Series switches support configuring Ethernet, virtual Ethernet (vEthernet), and port-channel interfaces as local SPAN source ports to monitor traffic traversing these different port types.
Local SPAN sessions on the Nexus 1000v allow for granular control over monitoring traffic, enabling configuration to specifically capture ingress (Rx), egress (Tx), or both directions of traffic on the source port.
SPAN source ports do not inherently need to be in the same VLAN; SPAN captures traffic from the specified source port regardless of its VLAN membership and directs it to the destination port.
A key characteristic of local SPAN is that both the source and destination ports must be located on the same Virtual Ethernet Module (VEM) within the Cisco Nexus 1000v architecture; traffic cannot be SPANned across different VEMs in a local session.
While a port profile itself is a configuration template, the actual virtual Ethernet ports instantiated from a port profile can indeed be configured as SPAN sources.
VSANs (Virtual Storage Area Networks) are irrelevant for standard Ethernet or virtual Ethernet SPAN, as they are used for Fibre Channel or FCoE traffic segmentation.
Concept tested: Nexus 1000v Local SPAN source port characteristics
Source: https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus1000v/sw/4_0/layer2/configuration/guide/l2_n1000v_cg/n1000v_l2_span.html
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