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412 CHAPTER 12: USING SYSTEM MANAGEMENT COMMANDS
Example
Configure the switch to receive NTP multicast messages through Vlan-interface1,
with the multicast IP address being 224.0.1.1.
<SW4500> system-view
System View: return to User View with Ctrl+Z.
[SW4500] interface Vlan-interface 1
[SW4500-Vlan-interface1] ntp-service multicast-client 224.0.1.1
ntp-service
multicast-server
Syntax
ntp-service multicast-server [ ip-address ] [ authentication-keyid
key-id | ttl ttl-number | version number ]*
undo ntp-service multicast-server [ ip-address ]
View
VLAN interface view
Parameter
ip-address: Multicast IP address, in the range of 224.0.1.0 to 224.0.1.255. The
default IP address is 224.0.1.1.
authentication-keyid key-id: Specifies the key ID used for sending messages
to multicast clients. The key-id argument ranges from 1 to 4294967295.
ttl ttl-number: Defines the lifetime of multicast messages. The ttl-number
argument ranges from 1 to 255 and defaults to 16.
version number: Specifies the NTP version number which ranges from 1 to 3 and
defaults to 3.
Description
Use the ntp-service multicast-server command to configure an Ethernet
switch to operate in the NTP multicast server mode and send NTP multicast
messages through the current interface.
Use the undo ntp-service multicast-server command to remove the
configuration.
By default, no Ethernet switch operates in multicast server mode.
Example
Configure the switch to send NTP multicast messages through Vlan-interface1,
and set the multicast group address to 224.0.1.1, keyid to 4, and the NTP version
number to 3.
<SW4500> system-view
System View: return to User View with Ctrl+Z.
[SW4500] interface Vlan-interface 1
[SW4500-Vlan-interface1]ntp-service multicast-server 224.0.1.1
authentication-keyid 4 version 3