Ntp configuration tasks, Configuring ntp implementation modes – H3C Technologies H3C S3100 Series Switches User Manual
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Table 1-1 NTP implementation modes on H3C S3100 series Ethernet switches
NTP implementation mode
Configuration on S3100 series switches
Server/client mode
Configure the local S3100 Ethernet switch to work in the NTP client mode. In
this mode, the remote server serves as the local time server, while the local
switch serves as the client.
Symmetric peer mode
Configure the local S3100 switch to work in NTP symmetric peer mode. In
this mode, the remote server serves as the symmetric-passive peer of the
S3100 switch, and the local switch serves as the symmetric-active peer.
Broadcast mode
z
Configure the local S3100 Ethernet switch to work in NTP broadcast
server mode. In this mode, the local switch broadcasts NTP messages
through the VLAN interface configured on the switch.
z
Configure the S3100 switch to work in NTP broadcast client mode. In this
mode, the local S3100 switch receives broadcast NTP messages through
the VLAN interface configured on the switch.
Multicast mode
z
Configure the local S3100 Ethernet switch to work in NTP multicast server
mode. In this mode, the local switch sends multicast NTP messages
through the VLAN interface configured on the switch.
z
Configure the local S3100 Ethernet switch to work in NTP multicast client
mode. In this mode, the local switch receives multicast NTP messages
through the VLAN interface configured on the switch.
z
When an H3C S3100 Ethernet switch works in server mode or symmetric passive mode, you need
not to perform related configurations on this switch but do that on the client or the symmetric-active
peer.
z
The NTP server mode, NTP broadcast mode, or NTP multicast mode takes effect only after the
local clock of the H3C S3100 Ethernet switch has been synchronized.
z
When symmetric peer mode is configured on two Ethernet switches, to synchronize the clock of the
two switches, make sure at least one switch’s clock has been synchronized.
NTP Configuration Tasks
Table 1-2 NTP configuration tasks
Task
Remarks
Configuring NTP Implementation Modes
Required
Configuring Access Control Right
Optional
Configuring NTP Authentication
Optional
Configuring Optional NTP Parameters
Optional
Optional
Configuring NTP Implementation Modes
An S3100 Ethernet switch can work in one of the following NTP modes: