1-5
Multicast mode
Figure 1-5 Multicast mode
Table 1-1 describes how the above mentioned NTP modes are implemented on 3Com S5500-EI series
Ethernet switches.
Table 1-1 NTP implementation modes on 3Com S5500-EI series Ethernet switches
NTP implementation mode Configuration on S5500-EI series switches
Server/client mode
Configure the local S5500-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.
Symmetric peer mode
Configure the local S5500-EI switch to work in NTP
symmetric peer mode. In this mode, the remote server
serves as the symmetric-passive peer of the S5500-EI
switch, and the local switch serves as the
symmetric-active peer.
Broadcast mode
z Configure the local S5500-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.
z Configure the S5500-EI switch to work in NTP
broadcast client mode. In this mode, the local
S5500-EI switch receives broadcast NTP messages
through the VLAN interface configured on the switch.
Multicast mode
z Configure the local S5500-EI 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 S5500-EI 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.
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