lab 04 -
time protocol
using the diagram below configure network time protocol.
send_ntp will provide time to receive_ntp.
use your current time and location for your clock settings.
solution:
set the appropriate time and time zone for the router that will act as
your time server.
also set the time server using the "ntp master" command.
at the appropriate interface broadcast the ntp protocol.
send_ntp#clock set 07:30:00 20 jan ...
1999
send_ntp#config t
enter configuration commands, one per line. ...
end with cntl/z.
send_ntp(config)#clock ?
summer-time configure summer (daylight ...
savings) time
timezone configure time zone
send_ntp(config)#clock timezone est 5
send_ntp(config)#clock summer-time ?
word name of time zone in summer
send_ntp(config)#clock summer-time est ?
date configure absolute summer time
recurring configure recurring summer time
send_ntp(config)#clock summer-time est ...
recurring
send_ntp(config)#int s0
send_ntp(config-if)#ntp broadcast
send_ntp(config)#ntp master
send_ntp#sh run
building configuration...
%sys-5-config_i: configured from console by ...
console
current configuration:
last configuration change at 07:40:38 est ...
wed jan 20 1999
!
version 11.3
no service password-encryption
!
hostname send_ntp
!
!
clock timezone est 5
clock summer-time est recurring
!
interface ethernet0
ip address 172.16.2.32 255.255.255.0
!
interface serial0
ip address 172.16.4.5 255.255.255.252
no ip mroute-cache
ntp broadcast
no fair-queue
!
interface serial1
no ip address
shutdown
!
router rip
network 172.16.0.0
!
ip classless
line con 0
line 1 8
line aux 0
line vty 0 4
!
ntp master
end
to configure the receiving router, just point it to the time server.
before router is configured to receive time from ntp server:
receive_ntp#sh clock
*00:05:04.359 utc mon mar 1 1993
receive_ntp#config t
enter configuration commands, one per line. ...
end with cntl/z.
receive_ntp(config)#ntp server ...
172.16.4.5
receive_ntp(config)#^z
%sys-5-config_i: configured from console by ...
console
receive_ntp#sh clock
.02:31:46.866 utc wed jan 20 1999
receive_ntp#sh run
building configuration...
current configuration:
!
version 11.3
no service password-encryption
hostname receive_ntp
interface serial0
ip address 172.16.4.6 255.255.255.252
no ip mroute-cache
clockrate 56000
!
interface serial1
no ip address
shutdown
!
interface serial2
no ip address
shutdown
!
interface serial3
no ip address
shutdown
!
interface tokenring0
no ip address
shutdown
!
interface bri0
no ip address
shutdown
!
ip classless
line con 0
line aux 0
line vty 0 4
login
!
ntp server 172.16.4.5
end