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Zorluk: KolayCisco DNA Center Enabled Device Management

A network administrator is deploying brand-new, unconfigured enterprise switches using Cisco DNA Center Network Plug and Play (PnP). Which two mechanisms can an unconfigured switch use to automatically discover the IP address of the Cisco DNA Center controller? (Select two.)

  1. DHCP Option 43 provided by the local DHCP serverCevap
  2. DNS query resolution for the hostname pnpserver.domain_nameCevap
  3. C
    Agentless Ansible playbooks pushed directly over SSH before IP configuration
  4. D
    TACACS+ authentication server broadcasts requesting controller redirect URLs
  5. E
    OSPF Hello multicast packets negotiating controller adjacency parameters

Cevap

The correct mechanisms are DHCP Option 43 provided by the local DHCP server and DNS query resolution for the hostname pnpserver.domain_name.
Cisco DNA Center Network Plug and Play (PnP) enables zero-touch provisioning of new network devices. An unconfigured switch booted out-of-the-box uses its PnP agent to discover the controller IP address via DHCP Option 43 or by looking up the well-known DNS name 'pnpserver'.

Adım Adım Çözüm

1
Identify the primary mechanism used by Cisco DNA Center Network Plug and Play (PnP) for Day-0 device onboarding.
When powered on, an unconfigured switch acquires IP configuration via DHCP.
DHCP Option 43 specifies the controller IP address directly to the PnP agent on the switch.
2
Identify the fallback discovery mechanism when DHCP Option 43 is absent.
The switch constructs a DNS request for 'pnpserver.<domain-name>'.
If DNS resolves 'pnpserver' to the IP address of Cisco DNA Center, the switch initiates contact automatically.

Anahtar Kavram

Cisco DNA Center Network Plug and Play (PnP) Discovery Methods
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Konular

Cisco DNA Center Enabled Device Management

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