Quick Answer
The correct commands are show vpc and show vpc consistency-parameters. The show vpc command is essential because it displays the overall VPC status, including the local and peer system MAC, the role of each switch (primary or secondary), and the operational state of every VPC member port, giving you a real-time health check of the VPC domain. The show vpc consistency-parameters command is equally critical because it verifies that key parameters—such as STP mode, VLAN interface configurations, and MTU—are identical on both peers; any mismatch here can cause traffic black-holing or VPC instability. On the Cisco DCCOR 350-601 exam, this pair of commands tests your ability to troubleshoot VPC misconfigurations, often appearing in scenario-based questions where you must identify why a VPC is not forming or why traffic is dropping. A common trap is relying only on show vpc and ignoring consistency checks, which can miss silent failures. Remember the mnemonic: “Status first, consistency second—if parameters don’t match, your VPC is wrecked.”
This 350-601 practice question tests your understanding of network. Examine the command output carefully: the correct answer depends on what the output actually shows, not on general recall alone. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A network engineer is verifying VPC configuration on a pair of Nexus switches. Which two commands should be used to check VPC status and consistency? (Choose two.)
show vpc role
Why wrong: Displays role but not consistency.
show vpc consistency-parameters
This checks for configuration mismatches between VPC peers.
show vpc peer-keepalive
Why wrong: Checks keepalive but not overall consistency.
show vpc
This command displays the VPC domain status and roles.
show vpc statistics
Why wrong: Shows statistics but not status or consistency.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
show vpc consistency-parameters
Option D (show vpc) is correct because it displays the overall VPC status, including the local and peer VPC system MAC, role, and the operational state of each VPC member port. Option B (show vpc consistency-parameters) is correct because it verifies that critical parameters (e.g., STP mode, VLAN interfaces, MTU) are consistent between the two VPC peers, which is essential for VPC to function correctly and avoid traffic black-holing.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
show vpc role
Why it's wrong here
Displays role but not consistency.
show vpc consistency-parameters
Why this is correct
This checks for configuration mismatches between VPC peers.
Related concept
Read the scenario before looking for a memorised answer.
show vpc peer-keepalive
Why it's wrong here
Checks keepalive but not overall consistency.
show vpc
Why this is correct
This command displays the VPC domain status and roles.
Related concept
Read the scenario before looking for a memorised answer.
show vpc statistics
Why it's wrong here
Shows statistics but not status or consistency.
Common exam traps
Cisco often tests the distinction between commands that show operational status (show vpc) versus those that verify configuration synchronization (show vpc consistency-parameters), leading candidates to mistakenly select 'show vpc role' or 'show vpc peer-keepalive' as sufficient for consistency checks.
Trap categories for this question
Command / output trap
Shows statistics but not status or consistency.
Detailed technical explanation
VPC relies on the Cisco Fabric Services (CFS) protocol to synchronize configuration and state between peers; the 'show vpc consistency-parameters' command checks Type-1 (must match) and Type-2 (should match) parameters, such as STP root bridge and VLAN pruning, to prevent traffic loops. A common real-world scenario is when one peer has a different STP mode (e.g., RPVST+ vs. MST), which causes VPC to suspend member ports, and only the consistency check reveals this mismatch.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A help-desk technician troubleshoots why a newly connected PC cannot reach shared printers on the same floor. The cable is good, the switch port is active, but the PC is in VLAN 20 and the printers are in VLAN 10. The uplink trunk only allows VLAN 10. A trunk being up does not mean every VLAN crosses it.
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FAQ
Network — This question tests Network — Read the scenario before looking for a memorised answer..
The correct answer is: show vpc consistency-parameters — Option D (show vpc) is correct because it displays the overall VPC status, including the local and peer VPC system MAC, role, and the operational state of each VPC member port. Option B (show vpc consistency-parameters) is correct because it verifies that critical parameters (e.g., STP mode, VLAN interfaces, MTU) are consistent between the two VPC peers, which is essential for VPC to function correctly and avoid traffic black-holing.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
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