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10.2.1.4 Packet Tracer – Configure and Verify NTP

Posted on March 22, 2018March 23, 2018 By Admin

Last Updated on March 23, 2018 by Admin

10.2.1.4 Packet Tracer – Configure and Verify NTP

  • Recommend

From year to year, Cisco has updated many versions with difference questions. The latest version is version 6.0 in 2018. What is your version? It depends on your instructor creating your class. We recommend you to go thought all version if you are not clear. While you take online test with netacad.com, You may get random questions from all version. Each version have 1 to 10 different questions or more. After you review all questions, You should practice with our online test system by go to "Online Test" link below.

Version 5.02 Version 5.03 Version 6.0 Online Assessment
Chapter 10 Exam Chapter 10 Exam Chapter 10 Exam Online Test
Next Chapter
Practice Final Practice Final Practice Final Online Test
Lab Activities
10.1.1.4 Packet Tracer – Map a Network Using CDP
10.2.1.4 Packet Tracer – Configure and Verify NTP
10.2.3.5 Packet Tracer – Configuring Syslog and NTP
10.3.1.8 Packet Tracer – Backing Up Configuration Files
10.3.3.5 Packet Tracer – Using a TFTP Server to Upgrade a Cisco IOS Image
10.4.1.1 Packet Tracer – Skills Integration Challenge

Packet Tracer – Configure and Verify NTP (Answer Version)

Answer Note: Red font color or gray highlights indicate text that appears in the Answer copy only.

Topology

10.2.1.4 Packet Tracer – Configure and Verify NTP
10.2.1.4 Packet Tracer – Configure and Verify NTP

Addressing Table

Device

Interface IP Address

Subnet Mask

N1 NIC 209.165.200.225 255.255.255.0
R1 G0/0 209.165.200.226 255.255.255.0
R2 G0/0 209.165.200.227 255.255.255.0

Objectives

In this activity, you will configure NTP on R1 and R2 to allow time synchronization.

Background / Scenario

Network Time Protocol (NTP) synchronizes the time of day among a set of distributed time servers and clients. While there are a number of applications that require synchronized time, this lab will focus on correlating events that are listed in the system log and other time-specific events from multiple network devices. NTP uses the User Datagram Protocol (UDP) as its transport protocol. All NTP communications use Coordinated Universal Time (UTC).

An NTP server usually receives its time from an authoritative time source, such as an atomic clock attached to a time server It then distributes this time across the network. NTP is extremely efficient; no more than one packet per minute is necessary to synchronize two machines to within a millisecond of each other.

Step 1: NTP Server

  1. Server N1 is already configured as the NTP Server for this topology. Verify its configuration under Services > NTP.
  2. From R1, ping N1 (209.165.200.225) to verify connectivity. The ping should be successful.
  3. Repeat the ping to N1 from R2 to verify connectivity to N1.

Step 2: Configuring the NTP Clients

Cisco devices can be configured to refer to an NTP server to synchronize their clocks. This is important to keep time consistent among all devices. Configure R1 and R2 as NTP clients so their clocks are synchronized. Both R1 and R2 will use N1 server as their NTP server. To configure R1 and R2 as an NTP clients, issue the commands below:

  1. Use the ntp server command to specify an NTP server, as shown below:
    • R1# conf t
    • R1(config)# ntp server 209.165.200.225
    • R2# conf t
    • R2(config)# ntp server 209.165.200.225
  2. Check the clock on R1 and R2 again to verify that they are synchronized:
    • R1# show clock
    • *12:02:18:619 UTC Tue Dec 8 2015
    • R2# show clock
    • *12:02:20:422 UTC Tue Dec 8 2015
    • Note: When working on physical routers, allow a few minutes before R1 and R2 clocks are synchronized.
    • Are the clocks synchronized?

____________________________________________________________________________________

Yes. R1 and R2 have the same time as N1.

  • Recommend

From year to year, Cisco has updated many versions with difference questions. The latest version is version 6.0 in 2018. What is your version? It depends on your instructor creating your class. We recommend you to go thought all version if you are not clear. While you take online test with netacad.com, You may get random questions from all version. Each version have 1 to 10 different questions or more. After you review all questions, You should practice with our online test system by go to "Online Test" link below.

Version 5.02 Version 5.03 Version 6.0 Online Assessment
Chapter 10 Exam Chapter 10 Exam Chapter 10 Exam Online Test
Next Chapter
Practice Final Practice Final Practice Final Online Test
Lab Activities
10.1.1.4 Packet Tracer – Map a Network Using CDP
10.2.1.4 Packet Tracer – Configure and Verify NTP
10.2.3.5 Packet Tracer – Configuring Syslog and NTP
10.3.1.8 Packet Tracer – Backing Up Configuration Files
10.3.3.5 Packet Tracer – Using a TFTP Server to Upgrade a Cisco IOS Image
10.4.1.1 Packet Tracer – Skills Integration Challenge
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