Refer to the exhibit. An engineer must configure an ERSPAN tunnel that mirrors traffic from Linux1 on Switch1 to Linux2 on Switch2. Which command must be added to the destination configuration to enab

Question

Exhibits

Options

• A(config-mon-erspan-src-dst)# no shut
• B(config-mon-erspan-src-dst)# traffic bidirectional
• C(config-mon-erspan-src-dst)# monitor session 1 activate
• D(config-mon-erspan-src-dst)# ip address 10.10.10.10

• B
  6% (1)
• C
  18% (3)
• D
  76% (13)

Explanation

ERSPAN Destination Configuration Explanation

Configuring an ERSPAN (Encapsulated Remote SPAN) destination session requires assigning an IP address to the destination configuration, which serves as the tunnel endpoint that receives the mirrored traffic - making option D correct. Without specifying ip address 10.10.10.10, the switch has no way to identify where the ERSPAN GRE tunnel should terminate, so the session cannot become active.

Why the distractors are wrong:

• Option A (no shut) is not a valid command in the ERSPAN destination configuration context; ERSPAN sessions are activated differently than interfaces.
• Option B (traffic bidirectional) is not a valid ERSPAN command; ERSPAN mirrors traffic in one direction (source to destination) by design.
• Option C (monitor session 1 activate) is actually the correct command used on the source session to enable it - not the destination - and the syntax belongs to the source configuration mode.

Memory Tip: Think of ERSPAN as "GPS for your traffic" - just like GPS needs a destination address to navigate, ERSPAN needs an IP address on the destination session to know where to send the mirrored packets. If there's no address, there's no tunnel!

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