350-601 · Question #371
A network engineer must SPAN only the ingress traffic of a Cisco MDS 9000 series switch from interface fc 1/23 to interface fc 1/24. Which two configuration must be applied to complete this task?…
The correct answer is B. MDS-A(config-if)# switchport mode SD C. MDS-A(config-span)# source interface fc 1/23 rx. To SPAN only ingress traffic from interface fc 1/23 to interface fc 1/24 on a Cisco MDS 9000 series switch, you must configure the source interface for receive-only traffic and set the destination interface to SPAN Destination mode.
Question
A network engineer must SPAN only the ingress traffic of a Cisco MDS 9000 series switch from interface fc 1/23 to interface fc 1/24. Which two configuration must be applied to complete this task? (Choose two)
Exhibit
Options
- AMDS-A(config-span)# source interface fc 1/23
- BMDS-A(config-if)# switchport mode SD
- CMDS-A(config-span)# source interface fc 1/23 rx
- DMDS-A(config-span)# source interface fc 1/23 tx
- EMDS-A(config-if)# switchport mode TL
How the community answered
(39 responses)- A3% (1)
- B74% (29)
- D8% (3)
- E15% (6)
Why each option
To SPAN only ingress traffic from interface fc 1/23 to interface fc 1/24 on a Cisco MDS 9000 series switch, you must configure the source interface for receive-only traffic and set the destination interface to SPAN Destination mode.
source interface fc 1/23 without 'rx' or 'tx' would monitor both ingress and egress traffic, not just ingress.
The command switchport mode SD is used to configure the destination interface (such as fc 1/24 in this scenario) as a SPAN Destination port, which receives the monitored traffic.
The command source interface fc 1/23 rx specifies interface fc 1/23 as the source for the SPAN session and explicitly limits the monitoring to only the received (ingress) traffic, fulfilling the requirement.
source interface fc 1/23 tx would monitor only egress traffic, which is contrary to the requirement of monitoring ingress traffic.
switchport mode TL is not a valid or standard command for configuring a SPAN destination port on Cisco MDS switches.
Concept tested: Cisco MDS SPAN configuration, ingress traffic monitoring
Source: https://www.cisco.com/c/en/us/td/docs/switches/datacenter/mds9000/sw/6_2/configuration/guides/system/nx-os/sys_cg_6_2_1/span.html
Topics
Community Discussion
No community discussion yet for this question.