A10E/A28E/A28F Configuration Guide
answering message. The client received answering message and perform clock filer and
selection, then synchronize it to privileged server.
In this mode, client can synchronize to server but the server cannot synchronize to client.
Symmetric peer mode
In this mode, active equity send clock synchronization message to passive equity. The passive
equity works in passive mode by automation after receiving message and send answering
message back. By exchanging messages, the two sides build up symmetric peer mode. The
active and passive equities in this mode can synchronize each other.
The NTP default configuration is as below.
Whether the A10E/A28E is NTP master clock
Configure NTP for the A10E/A28E as below.
Enter global configuration mode.
Alpha-A28E(config)#ntp
server
ip-address
[ version
[ v1 | v2 | v3
] ]
(Optional) configure NTP server address
for client device working in server/client
mode.
Alpha-A28E(config)#ntp peer
ip-address
[ version [ v1 |
v2 | v3
] ]
(Optional) configure NTP equity address
for the A10E/A28E working in symmetric
peer mode.
Alpha-A28E(config)#ntp
refclock-master
[
ip-
address
] [
stratum
]
Configure clock of the A10E/A28E as
NTP reference clock source for the
A10E/A28E.
If the A10E/A28E is configured as NTP reference clock source, the NTP server or
NTP equity are not configurable; and vice versa, the A10E/A28E cannot be
configured as NTP reference clock if the NTP server or equity are configured.
1.5.4 Configuring SNTP
Simple Network Time Protocol (SNTP) is mainly used to synchronize Switch system time
with the SNTP device time in the network. The time synchronized by SNTP protocol is
Greenwich Mean Time (GMT), which can be changed to local time according to system
setting of time zone.
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