Huawei Quidway S3500 Series Operation Manual page 630

Operation Manual - System Management
Quidway S3500 Series Ethernet Switches
V. Configure NTP Multicast Server Mode
Designate an interface on the local Ethernet Switch to transmit NTP multicast packets.
In this case, the local equipment operates in multicast mode and serves as a multicast
server to multicast messages to its clients regularly.
Perform the following configurations in VLAN interface view.
Table 7-5 Configure NTP multicast server mode
Configure NTP multicast server mode
Cancel NTP multicast server mode
NTP version number number ranges from 1 to 3 and defaults to 3; the authentication
key ID keyid ranges from 0 to 4294967295; ttl-number of the multicast packets ranges
from 1 to 255; And the multicast IP address defaults to 224.0.1.1.
This command can only be configured on the interface where the NTP multicast packet
will be transmitted.
VI. Configure NTP Multicast Client Mode
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 packets, 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 by the arrived multicast
message.
Perform the following configurations in VLAN interface view.
Table 7-6 Configure NTP multicast client mode
Configure NTP multicast client mode
Cancel NTP multicast client mode
Multicast IP address ip-address defaults to 224.0.1.1; This command can only be
configured on the interface where the NTP multicast packets will be received.
Operation
Operation
Huawei Technologies Proprietary
7-6
Chapter 7 NTP Configuration
Command
ntp-service
[ ip-address ] [ authentication-keyid
keyid ] [ ttl ttl-number ] [ version number ]
undo ntp-service multicast-server
Command
ntp-service multicast-client [ ip-address ]
undo ntp-service multicast-client
multicast-server