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D-PST-DY-23 · Question #16

A PowerStore T administrator discovers that only one port on each node is active and passing traffic. The other port is healthy and online, but total bandwidth is only half of what the customer…

The correct answer is A. Configure Dynamic LAG D. Configure LACP. On a PowerStore T, when two ports are healthy but only one carries traffic, the system is likely operating in active/passive mode rather than active/active bonding. Configuring LACP (D) enables IEEE 802.3ad link aggregation negotiation between the storage node and the upstream…

PowerStore Networking and Integration

Question

A PowerStore T administrator discovers that only one port on each node is active and passing traffic. The other port is healthy and online, but total bandwidth is only half of what the customer expects. Which two actions could resolve the issue? (Choose two.)

Options

  • AConfigure Dynamic LAG
  • BConfigure VLT
  • CConfigure RSTP
  • DConfigure LACP

How the community answered

(37 responses)
  • A
    78% (29)
  • B
    16% (6)
  • C
    5% (2)

Explanation

On a PowerStore T, when two ports are healthy but only one carries traffic, the system is likely operating in active/passive mode rather than active/active bonding. Configuring LACP (D) enables IEEE 802.3ad link aggregation negotiation between the storage node and the upstream switch, and configuring a Dynamic LAG (A) bundles both physical ports into a single logical channel - together these allow both ports to forward traffic simultaneously, doubling available bandwidth.

Why B is wrong: VLT (Virtual Link Trunking) is a Dell switch-level feature for aggregating uplinks between two switches, not for bonding ports on a storage array.

Why C is wrong: RSTP (Rapid Spanning Tree Protocol) is a loop-prevention protocol that deliberately blocks redundant ports - the opposite of what's needed here. It would keep one port inactive by design.

Memory tip: "LAG bundles the lanes, LACP negotiates the deal." Think of Dynamic LAG as the highway with two lanes open, and LACP as the traffic agreement that keeps both lanes active. RSTP shuts lanes to prevent loops, and VLT lives on the switch - not the storage array.

Topics

#link aggregation#LACP#Dynamic LAG#network bonding

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