109
Reference time: d0c61289.10b1193f Wed, Dec 29 2010 20:03:21.065
# Verify that an IPv6 NTP association has been established between Switch A and Switch C.
[SwitchA-Vlan-interface3] display ntp-service ipv6 sessions
Notes: 1 source(master), 2 source(peer), 3 selected, 4 candidate, 5 configured.
Source: [124]3000::2
Reference: 127.127.1.0 Clock stratum: 2
Reachabilities: 2 Poll interval: 64
Last receive time: 71 Offset: -0.0
Roundtrip delay: 0.0 Dispersion: 0.0
Total sessions: 1
Configuration example for NTP client/server mode with
authentication
Network requirements
As shown in
, perform the following tasks:
•
Configure the local clock of Device A as a reference source, with stratum level 2.
•
Configure Device B to operate in client mode and specify Device A as the NTP server of Device
B.
•
Configure NTP authentication on both Device A and Device B.
Figure 43
Network diagram
Configuration procedure
1.
Assign an IP address to each interface, and make sure Device A and Device B can reach each
other, as shown in
. (Details not shown.)
2.
Configure Device A:
# Enable the NTP service.
<DeviceA> system-view
[DeviceA] ntp-service enable
# Specify the local clock as the reference source, with stratum level 2.
[DeviceA] ntp-service refclock-master 2
3.
Configure Device B:
# Enable the NTP service.
<DeviceB> system-view
[DeviceB] ntp-service enable
# Enable NTP authentication on Device B.
[DeviceB] ntp-service authentication enable
# Set an authentication key, and input the key in plain text.
[DeviceB] ntp-service authentication-keyid 42 authentication-mode md5 simple
aNiceKey
1.0.1.11/24
1.0.1.12/24
Device A
Device B
NTP server
NTP client