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Zorluk: OrtaNTP Client and Server Operations and Configuration

A network engineer is configuring a Cisco IOS router named Edge-R1 to operate as an NTP client. The router must synchronize its system clock with an upstream central NTP server at IP address 10.45.1.1. Additionally, organizational security policy dictates that all outgoing NTP packets must originate specifically from the router's Loopback0 interface rather than the physical egress interface. Which two global configuration commands must be configured on Edge-R1 to fulfill these operational requirements?

  1. ntp server 10.45.1.1Cevap
  2. B
    ip helper-address 10.45.1.1
  3. ntp source Loopback0Cevap
  4. D
    ntp master 16

Cevap

The two correct global configuration commands are 'ntp server 10.45.1.1' to identify the time server and 'ntp source Loopback0' to force NTP packets to use the specified interface address.
To establish NTP synchronization with an external time source, the command 'ntp server 10.45.1.1' is required to specify the remote NTP server IP address. Additionally, enforcing that all NTP control traffic originates from a designated logical interface requires the global command 'ntp source Loopback0'.

Adım Adım Çözüm

1
Identify the command required to configure an NTP server target.
The global configuration command 'ntp server 10.45.1.1' configures the router to solicit time messages from 10.45.1.1.
NTP client functionality requires pointing the device to an authoritative upstream clock source.
2
Identify the command required to set the source interface for outbound NTP traffic.
The global configuration command 'ntp source Loopback0' ensures all outbound NTP requests use the IP address assigned to Loopback0 as their source address.
By default, Cisco IOS uses the IP address of the egress interface facing the destination; configuring an explicit source interface standardizes control plane traffic origin.

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Cisco IOS NTP Client and Source Interface Configuration
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NTP Client and Server Operations and Configuration

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