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Zorluk: KolayLayer 2 Discovery Protocols (CDP and LLDP)

A network engineer is configuring network topology discovery across a multi-vendor environment containing both Cisco and non-Cisco switches. Which IEEE standard defines the open, vendor-neutral Layer 2 discovery protocol used to identify neighboring devices?

  1. IEEE 802.1ABCevap
  2. B
    IEEE 802.1Q
  3. C
    IEEE 802.1D
  4. D
    IEEE 802.3ad

Cevap

IEEE 802.1AB is the IEEE standard that defines Link Layer Discovery Protocol (LLDP).
The IEEE 802.1AB standard formally defines Link Layer Discovery Protocol (LLDP). LLDP allows network devices to advertise identity, capabilities, and neighbor information across heterogeneous multi-vendor networks.

Adım Adım Çözüm

1
Identify the protocol requirements from the scenario
The scenario calls for an open, vendor-neutral Layer 2 discovery protocol usable across multi-vendor equipment.
Cisco Discovery Protocol (CDP) is Cisco-proprietary, whereas Link Layer Discovery Protocol (LLDP) is open-standard.
2
Map LLDP to its governing IEEE standard specification
LLDP is standardized under IEEE 802.1AB.
IEEE 802.1AB specifies the Type-Length-Value (TLV) frame format and operational procedures for LLDP.

Anahtar Kavram

Link Layer Discovery Protocol (LLDP) IEEE standard identification
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Konular

Layer 2 Discovery Protocols (CDP and LLDP)

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