Ntp-Service Multicast-Client - Huawei Quidway S8500 Series Command Manual

Command Manual – System Management
Quidway S8500 Series Routing Switches
<Quidway> system-view
System View: return to User View with Ctrl+Z.
[Quidway] ntp-service max-dynamic-sessions 50

7.1.11 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: Specifies an multicast IP address of Class D. By default, the ip-address is
set to 224.0.1.1. Actually, for the S8500 series, you can set 224.0.1.1 as the multicast
IP address only.
Description
Use the ntp-service multicast-client command to configure the NTP multicast client
mode.
Use the undo ntp-service multicast-client command to 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
packets 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 packets and synchronizes the local clock according to the
arrived multicast packets.
Example
# Configure to receive NTP multicast packet through Vlan-Interface1 and the multicast
group corresponding to these packets located at 224.0.1.1.
<Quidway> system-view
System View: return to User View with Ctrl+Z.
[Quidway] interface vlan-interface 1
[Quidway-Vlan-interface1] ntp-service multicast-client 224.0.1.1
Huawei Technologies Proprietary
7-9
Chapter 7 NTP Configuration Commands