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200-155 · Question #40

A network engineer is configuring a pair of 6248 Fabric Interconnects, each with dual 10G uplinks to a parent switch. One design retirement is to ensure a specific server is able to use 10G of through

The correct answer is C. LAN Pin Groups. To ensure a specific server within a Cisco UCS 5108 chassis receives dedicated 10G throughput to the LAN without contention, LAN Pin Groups are the appropriate technology.

Unified Computing System

Question

A network engineer is configuring a pair of 6248 Fabric Interconnects, each with dual 10G uplinks to a parent switch. One design retirement is to ensure a specific server is able to use 10G of throughput to the LAN without contention from other servers within the 5108 chassis. Which technology will accomplish this?

Options

  • APort-Channels
  • BUnified Ports
  • CLAN Pin Groups
  • DSystem QoS Policy

How the community answered

(24 responses)
  • A
    4% (1)
  • B
    4% (1)
  • C
    83% (20)
  • D
    8% (2)

Why each option

To ensure a specific server within a Cisco UCS 5108 chassis receives dedicated 10G throughput to the LAN without contention, LAN Pin Groups are the appropriate technology.

APort-Channels

Port-Channels aggregate multiple physical links to increase overall bandwidth and provide redundancy, but they do not inherently guarantee a dedicated 10G path for a single specific server free from contention.

BUnified Ports

Unified Ports on Cisco Fabric Interconnects offer the flexibility to operate as either Ethernet or Fibre Channel ports but do not directly provide a mechanism to dedicate throughput to a specific server.

CLAN Pin GroupsCorrect

LAN Pin Groups in Cisco UCS allow you to explicitly associate specific server-facing vNICs with particular physical uplinks on the Fabric Interconnects, thereby dedicating a 10G path to the upstream network for that server and preventing contention.

DSystem QoS Policy

System QoS policies allow for traffic prioritization and bandwidth allocation among different traffic classes, but they reserve or manage portions of bandwidth rather than dedicating an entire 10G link exclusively to a single server's traffic.

Concept tested: Cisco UCS LAN Pin Groups for dedicated bandwidth

Source: https://www.cisco.com/c/en/us/td/docs/unified_computing/ucs/sw/gui/config/guide/3-1/b_UCSM_GUI_Configuration_Guide_3_1/b_UCSM_GUI_Configuration_Guide_3_1_chapter_0100.html

Topics

#UCS Fabric Interconnect#LAN Pin Groups#server throughput#resource allocation

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