Command Manual - System Management
Quidway S6500 Series Ethernet Switches Chapter 7 NTP Configuration Commands
Huawei Technologies Proprietary
7-10
7.1.13 ntp-service multicast-client
Syntax
ntp-service multicast-client [ ip-address ]
undo ntp-service multicast-client [ ip-address ]
View
VLAN interface view
Parameter
ip-address: Specify an multicast IP address of Class D.
Description
Using ntp-service multicast-client command, you can configure the NTP multicast
client mode. Using undo ntp-service multicast-client command, you can disable the
NTP multicast client mode.
By default, the multicast client service is disabled. ip-address defaults to 224.0.1.1.
Designate an interface on the local Ethernet Switch to receive NTP multicast messages
and operate in multicast client mode. The local Ethernet Switch listens to the multicast
from the server. When it receives the first multicast packet, it starts a brief client/server
mode to switch messages with a remote server for estimating the network delay.
Thereafter, the local Ethernet Switch enters multicast client mode and continues
listening to the multicast and synchronizes the local clock according to the arrived
multicast message.
Example
# Configure to receive NTP multicast packet via Vlan-Interface1 and the multicast
group corresponding to these packets located at 224.0.1.1.
[Quidway] interface vlan-interface 1
[Quidway-Vlan-Interface1] ntp-service multicast-client 224.0.1.1
7.1.14 ntp-service multicast-server
Syntax
ntp-service multicast-server [ ip-address ] [ authentication-keyid keyid ] [ ttl
ttl-number ] [ version number ]
undo ntp-service multicast-server [ ip-address ]
View
VLAN interface view