Ntp Server

This scenario shows how to configure a DHCP client to receive information about an NTP server.

../../../_images/server.svg

Test NTP Server

Description

DUT0 is configured to obtain some information over DHCP: IP address and NTP host.

Scenario

Step 1: Run command set date 2019-02-01 12:00:00 at DUT0.

Step 2: Run command show date at DUT0 and check if output contains the following tokens:

Fri
Show output
Fri Feb  1 12:00:00 UTC 2019

Step 3: Run command set date 2019-01-01 10:00:00 at DUT1.

Step 4: Run command show date at DUT1 and check if output contains the following tokens:

Tue
Show output
Tue Jan  1 10:00:00 UTC 2019

Step 5: Set the following configuration in DUT1:

set interfaces ethernet eth0 address 10.215.200.100/24
set service dhcp-server shared-network dhcpserver subnet 10.215.200.0/24 options default-router 10.215.200.100
set service dhcp-server shared-network dhcpserver subnet 10.215.200.0/24 start 10.215.200.50 stop 10.215.200.50
set service dhcp-server shared-network dhcpserver subnet 10.215.200.0/24 options ntp-server 10.215.200.100
set system ntp master prefer
set system ntp master stratum 3

Step 6: Set the following configuration in DUT0:

set interfaces ethernet eth0 address dhcp
set system ntp server dhcp

Step 7: Ping IP address 10.215.200.50 from DUT1:

admin@DUT1$ ping 10.215.200.50 count 1 size 56 timeout 1
Show output
PING 10.215.200.50 (10.215.200.50) 56(84) bytes of data.
64 bytes from 10.215.200.50: icmp_seq=1 ttl=64 time=0.418 ms

--- 10.215.200.50 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.418/0.418/0.418/0.000 ms

Step 8: Run command interfaces ethernet eth0 show at DUT0 and check if output contains the following tokens:

10.215.200.50/24
Show output
-----------------------------------------------------------------
Name           IP Address           Admin  Oper  Vrf  Description
-----------------------------------------------------------------
eth0  10.215.200.50/24              up     up
      fe80::dcad:beff:feef:6c10/64

Step 9: Run command system ntp status at DUT0 and check if output contains the following tokens:

10.215.200.100
Show output
     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
 10.215.200.100  LOCAL(0)         4 u    -   64    1    0.289  -268560   0.000

Step 10: Run command show date at DUT0 and check if output contains the following tokens:

Tue
Show output
Tue Jan  1 10:00:10 UTC 2019