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200-155 · Question #56

A Cisco DCS administrator is ready to cable two newly racked Fabric Interconnects. Which two cabling configurations should be used for the heartbeat connectivity? (Choose two.)

The correct answer is B. Connect the Layer 2 port of Fabric Interconnect A to the Layer 2 port of Fabric Interconnect B. C. Connect the Layer 1 port of Fabric Interconnect A to the Layer 1 port of Fabric Interconnect B. Cisco UCS Fabric Interconnects require both Layer 1 and Layer 2 direct connections for heartbeat connectivity to ensure proper clustering and high availability.

Unified Computing System

Question

A Cisco DCS administrator is ready to cable two newly racked Fabric Interconnects. Which two cabling configurations should be used for the heartbeat connectivity? (Choose two.)

Options

  • AConnect the Layer 1 portal Fabric Interconnect Ala me Layer 2 port of Fabric Interconnect B.
  • BConnect the Layer 2 port of Fabric Interconnect A to the Layer 2 port of Fabric Interconnect B.
  • CConnect the Layer 1 port of Fabric Interconnect A to the Layer 1 port of Fabric Interconnect B.
  • DKeep the Layer 2 port of both Fabric Interconnects disconnected.
  • EConnect the Layer 2 port of Fabric Interconnect A to the Layer 1 port of Fabric Interconnect B.

How the community answered

(51 responses)
  • A
    2% (1)
  • B
    90% (46)
  • D
    4% (2)
  • E
    4% (2)

Why each option

Cisco UCS Fabric Interconnects require both Layer 1 and Layer 2 direct connections for heartbeat connectivity to ensure proper clustering and high availability.

AConnect the Layer 1 portal Fabric Interconnect Ala me Layer 2 port of Fabric Interconnect B.

Connecting a Layer 1 port to a Layer 2 port between Fabric Interconnects is an incorrect cabling configuration for heartbeat or management connectivity.

BConnect the Layer 2 port of Fabric Interconnect A to the Layer 2 port of Fabric Interconnect B.Correct

The Layer 2 port (often labeled MGMT or MGMT 2) of Fabric Interconnect A must be connected to the Layer 2 port of Fabric Interconnect B to establish the Layer 2 heartbeat, which is crucial for cluster communication, state synchronization, and failover.

CConnect the Layer 1 port of Fabric Interconnect A to the Layer 1 port of Fabric Interconnect B.Correct

The Layer 1 port (often labeled CLUSTER or MGMT 1) of Fabric Interconnect A must be connected to the Layer 1 port of Fabric Interconnect B to establish the Layer 1 heartbeat, providing a dedicated physical link for cluster control signals and fault detection.

DKeep the Layer 2 port of both Fabric Interconnects disconnected.

Keeping the Layer 2 port disconnected would prevent the establishment of the necessary Layer 2 heartbeat, which is vital for cluster communication and high availability, leading to a non-functional or unstable cluster.

EConnect the Layer 2 port of Fabric Interconnect A to the Layer 1 port of Fabric Interconnect B.

Connecting a Layer 2 port to a Layer 1 port between Fabric Interconnects is an incorrect cabling configuration for heartbeat or management connectivity.

Concept tested: Cisco UCS Fabric Interconnect heartbeat cabling

Source: https://www.cisco.com/c/en/us/td/docs/unified_computing/ucs/hw/install/fabric_interconnect_6200/6200_install/cluster_fi_6200.html

Topics

#Cisco UCS#Fabric Interconnect#heartbeat cabling#UCS installation

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