350-401 · Question #1263
Refer to the exhibit. An engineer must send the 172.16.2.0 /24 user traffic to a packet capture tool to troubleshoot an issue. Which action completes the configuration?
The correct answer is A. Define the remote span VLAN on SW1 and SW2.. To capture user traffic on a separate device, Remote SPAN (RSPAN) is the appropriate solution, which requires a dedicated VLAN for transporting mirrored traffic.
Question
Refer to the exhibit. An engineer must send the 172.16.2.0 /24 user traffic to a packet capture tool to troubleshoot an issue. Which action completes the configuration?
Exhibits
Options
- ADefine the remote span VLAN on SW1 and SW2.
- BDisable the spanning tree protocol on the monitoring server VLAN.
- CEncrypt the traffic between the users and the monitoring servers.
- DEnable the Cisco Discovery Protocol on the server interfaces.
How the community answered
(37 responses)- A78% (29)
- B8% (3)
- C11% (4)
- D3% (1)
Why each option
To capture user traffic on a separate device, Remote SPAN (RSPAN) is the appropriate solution, which requires a dedicated VLAN for transporting mirrored traffic.
To send traffic from user VLANs on one switch (SW1) to a packet capture tool on another switch (SW2), configuring a Remote SPAN (RSPAN) session is necessary. RSPAN utilizes a specific RSPAN VLAN to carry the mirrored traffic between source and destination RSPAN ports across multiple switches.
Disabling Spanning Tree Protocol (STP) on any VLAN can lead to Layer 2 loops and network instability, and it is unrelated to the process of mirroring traffic for analysis.
Encrypting traffic between users and monitoring servers would obscure the packet contents, making it impossible for a packet capture tool to troubleshoot issues effectively.
Cisco Discovery Protocol (CDP) is used for device discovery and information exchange between directly connected Cisco devices, not for mirroring user traffic to a capture tool.
Concept tested: Remote SPAN (RSPAN) configuration
Source: https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3750/software/release/12-2_44_se/configuration/guide/scg/swspan.html
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