H3C Technologies H3C S6300 Series Switches - Manual (Page 28)

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• Either the symmetric-active peer, or the symmetric-passive peer, or both of them must be in
synchronized state. Otherwise, their time cannot be synchronized.
• You can configure multiple symmetric-passive peers by repeating the ntp-service unicast-peer or
ntp-service ipv6 unicast-peer command.
To configure a symmetric-active peer:
Step Command Remarks
1. Enter system view. system-view N/A
2. Specify a symmetric-passive
peer for the device.
• Specify a symmetric-passive
peer:
ntp-service unicast-peer
{ peer-name | ip-address }
[ authentication-keyid keyid |
priority | source interface-type
interface-number | version
number ] *
• Specify an IPv6
symmetric-passive peer:
ntp-service ipv6 unicast-peer
{ peer-name | ipv6-address }
[ authentication-keyid keyid |
priority | source interface-type
interface-number ] *
By default, no symmetric-passive
peer is specified.
Configuring NTP in broadcast mode
A broadcast server must be synchronized by other devices or use its local clock as a reference source
before synchronizing a broadcast client. Otherwise, the broadcast client will not be synchronized to the
broadcast server.
Configure NTP in broadcast mode on both broadcast server and client.
Configuring a broadcast client
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter interface view.
interface interface-type
interface-number Enter the interface for receiving
NTP broadcast messages.
3. Configure the device to
operate in broadcast client
mode. ntp-service broadcast-client
By default, the device does not
operate in broadcast client mode.
After you execute the command,
the device receives NTP broadcast
messages from the specified
interface.
Configuring the broadcast server
Step Command Remarks
1. Enter system view. system-view N/A