3com 4500 PWR 50-PORT User Manual
412
C
HAPTER
12: U
SING
S
YSTEM
M
ANAGEMENT
C
OMMANDS
Example
Configure the switch to receive NTP multicast messages through Vlan-interface1,
with the multicast IP address being 224.0.1.1.
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.
messages through the current interface.
Use the u
ndo 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.
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