168.100.15 Con?¬?gures the router??™s
software clock to
synchronize a peer or to
be synchronized by a peer
at 192.168.100.15
Router(config)#npt master 3 Makes this system an
authoritative NTP server
using NTP stratum 3
NOTE: The stratum
number is a number
from 1 to 15. The default
stratum is 8.
Con?¬?guration Example: NTP 127
Con?¬?guration Example: NTP
Figure 5-13 shows the network topology for the con?¬?guration that follows, which shows
how to con?¬?gure NTP using commands covered in this chapter. Note that only the NTP
commands are shown.
Figure 5-13 Network Topology for NTP Con?¬?guration Example
Winnipeg Router (NTP Source)
Winnipeg(config)#ntp master 5 Makes this system an
authoritative NTP server
using NTP stratum 5
Winnipeg(config)#ntp authentication-key 1 md5
manitoba
Creates authentication key
1 with a password of
manitoba
Winnipeg(config)#ntp peer 172.16.10.2 key 1 Creates a peer relationship
with 172.16.10.2 using
authentication key 1
Winnipeg(config)#ntp source loopback 0 This interface is used for
the source address for all
packets sent to all
destinations
Brandon
Dauphin
Winnipeg
Fa0/0
Fa0/1
Intermediate
NTP
Client
NTP
Source
Lo0
172.16.10.2
Lo0
172.16.
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