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Zorluk: KolayLayer 2 and Layer 3 EtherChannel (LACP)

A network technician is setting up dynamic link aggregation using Link Aggregation Control Protocol (LACP) between two Cisco switches. Which TWO channel-group mode pairings will successfully establish an operational EtherChannel bundle? (Select two.)

  1. Both switch interfaces configured in active modeCevap
  2. One switch interface configured in active mode and the other in passive modeCevap
  3. C
    Both switch interfaces configured in passive mode
  4. D
    One switch interface configured in active mode and the other in desirable mode

Cevap

The correct options are configuring both interfaces in active mode, and configuring one interface in active mode with the opposing interface in passive mode.
LACP EtherChannel formation requires at least one participating interface to be in active mode to send LACP frames. Thus, active-active and active-passive combinations will both form a functional bundle.

Adım Adım Çözüm

1
Analyze LACP operational modes.
Active mode actively transmits LACP packets, whereas passive mode only responds to received LACP packets.
At least one endpoint must be configured in active mode to initiate the LACP packet exchange.
2
Evaluate protocol compatibility.
Desirable mode belongs to PAgP, which is incompatible with LACP.
Both switches must use matching aggregation protocols (LACP to LACP or PAgP to PAgP).

Anahtar Kavram

LACP Mode Negotiation Dynamics
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Konular

Layer 2 and Layer 3 EtherChannel (LACP)

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