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300-170 · Question #104

Refer to the exhibit. You attempt to configure a local SPAN session on a Cisco Nexus 1000V Series Switch by using the vEthernet interface of VM1 as the source port and the vEthernet destination…

The correct answer is D. It fails. Attempting to configure a local SPAN session on a Cisco Nexus 1000V using a vEthernet interface as the destination port will fail due to system limitations.

Cisco Data Center Virtualization

Question

Refer to the exhibit. You attempt to configure a local SPAN session on a Cisco Nexus 1000V Series Switch by using the vEthernet interface of VM1 as the source port and the vEthernet destination port. Which description of what happens to the SPAN session is true?

Exhibit

300-170 question #104 exhibit

Options

  • AIt can be successfully only logged to a file on VEM1.
  • BIt secceeds.
  • CBoth VMs must be on same VLAN for this work.
  • DIt fails.

How the community answered

(30 responses)
  • A
    3% (1)
  • B
    10% (3)
  • C
    13% (4)
  • D
    73% (22)

Why each option

Attempting to configure a local SPAN session on a Cisco Nexus 1000V using a vEthernet interface as the destination port will fail due to system limitations.

AIt can be successfully only logged to a file on VEM1.

SPAN sessions on Cisco Nexus 1000V are not logged to a file on VEM1; they typically direct traffic to a monitoring interface.

BIt secceeds.

The configuration will not succeed because a vEthernet interface cannot function as a SPAN destination port on the Cisco Nexus 1000V switch.

CBoth VMs must be on same VLAN for this work.

VLAN membership is irrelevant to the fundamental limitation that a vEthernet interface cannot serve as a SPAN destination on the Cisco Nexus 1000V.

DIt fails.Correct

Configuring a local SPAN session on a Cisco Nexus 1000V Series Switch requires the SPAN destination port to be a physical Ethernet interface on the VEM or a port profile that maps to one, not another vEthernet interface.

Concept tested: Cisco Nexus 1000V SPAN limitations

Source: https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus1000v/sw/4_2_1_s_1_1/span/configuration/guide/n1000v_span/n1000v_span_config.html

Topics

#Cisco Nexus 1000V#SPAN#virtual machine networking

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