Switch 7700 Command reference Guide, v2.0

498 CHAPTER 11: USING SYSTEM MANAGEMENT COMMANDS
Parameter
number: The maximum sessions can be created locally, ranging from 0 to 100.
Description
Using ntp-service max-dynamic-sessions command, you can set how many
sessions can be created locally. Using
undo ntp-service max-dynamic-sessions
command, you can resume the default maximum session number
By default, a local device allows up to 100 sessions.
Example
Set the local equipment to allow up to 50 sessions.
[SW7700]ntp-service max-dynamic-sessions 50
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.
[SW7700]interface vlan-interface 1
[SW7700-Vlan-Interface1]ntp-service multicast-client 224.0.1.1
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 ]