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000-221 · Question #12

Which configuration will provide an LPAR maximum network resilience and performance with two Ethernet adapters?

The correct answer is A. Configure both Ethernet adapters as IEEE 802.3ad link Aggregated with src_dst_port mode. IEEE 802.3ad link aggregation bonds both Ethernet adapters into a single logical interface, simultaneously providing load balancing and automatic failover for maximum resilience and throughput.

Networking

Question

Which configuration will provide an LPAR maximum network resilience and performance with two Ethernet adapters?

Options

  • AConfigure both Ethernet adapters as IEEE 802.3ad link Aggregated with src_dst_port mode
  • BConfigure EtherChannel using Internet Protocol over InfiniBand (IPoIB) with 64K TCP/IP MTU 64K
  • CConfigure EtherChannel with one Ethernet adapter as primary adapter & one as backup with hash
  • DConfigure both adapters with Quality of Server (QoS) adapters and configure virtual IP address on

How the community answered

(33 responses)
  • A
    79% (26)
  • B
    6% (2)
  • C
    12% (4)
  • D
    3% (1)

Why each option

IEEE 802.3ad link aggregation bonds both Ethernet adapters into a single logical interface, simultaneously providing load balancing and automatic failover for maximum resilience and throughput.

AConfigure both Ethernet adapters as IEEE 802.3ad link Aggregated with src_dst_port modeCorrect

IEEE 802.3ad (LACP) aggregates both physical adapters into one logical EtherChannel, doubling available bandwidth while providing transparent failover if either adapter fails. The src_dst_port hashing mode distributes flows using source and destination port information, enabling effective per-flow load balancing across both physical links simultaneously.

BConfigure EtherChannel using Internet Protocol over InfiniBand (IPoIB) with 64K TCP/IP MTU 64K

IPoIB (IP over InfiniBand) is a protocol specific to InfiniBand fabric and is not applicable to standard Ethernet adapters, making this configuration technically invalid.

CConfigure EtherChannel with one Ethernet adapter as primary adapter & one as backup with hash

A primary/backup EtherChannel provides only failover with no throughput gain because only one adapter carries traffic at any time, sacrificing performance.

DConfigure both adapters with Quality of Server (QoS) adapters and configure virtual IP address on

Configuring QoS with a virtual IP address does not constitute a bonding or aggregation setup and provides neither combined bandwidth nor link-level redundancy.

Concept tested: IEEE 802.3ad EtherChannel link aggregation on AIX

Source: https://www.ibm.com/docs/en/aix/7.3?topic=management-etherchannel-link-aggregation

Topics

#EtherChannel#IEEE 802.3ad link aggregation#network resilience#src_dst_port mode

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