350-401 · Question #437
Which command set configures RSPAN to capture outgoing traffic from VLAN 3 on interface GigabitEthernet 0/3 while ignoring other VLAN traffic on the same interface?
The correct answer is B. monitor session 2 source interface gigabitethernet0/3 tx. Configuring a SPAN session to capture only outgoing traffic from a specific interface requires specifying the tx keyword in the source interface command.
Question
Which command set configures RSPAN to capture outgoing traffic from VLAN 3 on interface GigabitEthernet 0/3 while ignoring other VLAN traffic on the same interface?
Options
- Amonitor session 2 source interface gigabitethernet0/3 rx
- Bmonitor session 2 source interface gigabitethernet0/3 tx
- Cmonitor session 2 source interface gigabitethernet0/3 tx
- Dmonitor session 2 source interface gigabitethernet0/3 rx
How the community answered
(29 responses)- A10% (3)
- B83% (24)
- C3% (1)
- D3% (1)
Why each option
Configuring a SPAN session to capture only outgoing traffic from a specific interface requires specifying the `tx` keyword in the source interface command.
The `rx` keyword specifies capturing received (incoming) traffic, which does not meet the requirement of capturing outgoing traffic.
The `monitor session 2 source interface gigabitethernet0/3 tx` command correctly configures the SPAN session to capture only transmitted (outgoing) traffic from interface GigabitEthernet 0/3, fulfilling the requirement for capturing outgoing traffic.
This option is identical to B, but in a multiple-choice scenario, only one option is typically the designated correct answer; technically it's a correct command for the scenario.
The `rx` keyword specifies capturing received (incoming) traffic, which does not meet the requirement of capturing outgoing traffic.
Concept tested: RSPAN transmit traffic capture
Source: https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3850/software/release/3se/programmability/command_reference/b_cmdref_3se_3850_chapter_01000.html#wp5160867
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