H3C S5100-SI Operation Manual page 562

Broadcast mode
Figure 1-4 Broadcast mode
Multicast mode
Figure 1-5 Multicast mode
Table 1-1 describes how the above mentioned NTP modes are implemented on H3C S5100-SI/EI
series Ethernet switches.
Table 1-1 NTP implementation modes on H3C S5100-SI/EI series Ethernet switches
NTP implementation mode
Server/client mode
Symmetric peer mode
Broadcast mode
Configuration on S5100-SI/EI series switches
Configure the local S5100-SI/EI 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.
Configure the local S5100-SI/EI switch to work in NTP
symmetric peer mode. In this mode, the remote server
serves as the symmetric-passive peer of the S5100-SI/EI
switch, and the local switch serves as the symmetric-active
peer.
Configure the local S5100-SI/EI 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.
Configure the S5100-SI/EI switch to work in NTP
broadcast client mode. In this mode, the local
S5100-SI/EI switch receives broadcast NTP messages
through the VLAN interface configured on the switch.
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