Configuring Ntp Broadcast Mode - HP 5820X Switch Configuration Manual

NOTE:
• In symmetric mode, use any NTP configuration command in
NTP to enable NTP; otherwise, a symmetric-passive peer will not process NTP messages from a
symmetric-active peer.
In the ntp-service unicast-peer command,
•
broadcast address, a multicast address or the IP address of the local clock.
• When the source interface for NTP messages is specified by the source-interface argument, the
source IP address of the NTP messages is configured as the primary IP address of the specified
interface.
Typically, at least one of the symmetric-active and symmetric-passive peers has been synchronized;
•
otherwise, the clock synchronization will not proceed.
You can configure multiple symmetric-passive peers by repeating the ntp-service unicast-peer
•
command.

Configuring NTP broadcast mode

The broadcast server periodically sends NTP broadcast messages to the broadcast address
255.255.255.255. After receiving the messages, the device working in NTP broadcast client mode sends
a reply and synchronizes its local clock.
For devices working in broadcast mode, configure both the server and clients. Because an interface
needs to be specified on the broadcast server for sending NTP broadcast messages and an interface also
needs to be specified on each broadcast client for receiving broadcast messages, the NTP broadcast
mode can only be configured in the specific interface view.
Configuring a broadcast client
To do...
1. Enter system view.
2. Enter Layer 3 Ethernet
interface view or VLAN
interface view.
3. Configure the device to work
in NTP broadcast client mode.
Configuring the broadcast server
To do...
1. Enter system view.
2. Enter Layer 3 Ethernet
interface view or VLAN
interface view.
3. Configure the device to work
in NTP broadcast server
mode.
ip-address
must be a unicast address, rather than a
Use the command...
system-view
interface interface-type interface-
number
ntp-service broadcast-client
Use the command...
system-view
interface interface-type interface-
number
ntp-service broadcast-server
[ authentication-keyid keyid |
version number ] *
62
Configuring the operation modes of
Remarks
—
Required.
Enter the interface used to receive
NTP broadcast messages.
Required.
Remarks
—
Enter the interface used to send
NTP broadcast messages.
Required.