Operation Manual – NTPH3C S5600 Series Ethernet Switches Chapter 1 NTP Configuration1-11Note:z A multicast server can synchronize multicast clients only after its clock has beensynchronized.z An S5600 series switch working in the multicast server mode supports up to 1,024multicast clients.I. Configuring a switch to work in the multicast server modeFollow these steps to configure a switch to work in the NTP multicast server mode:To do… Use the command… RemarksEnter system view system-view —Enter VLAN interface view interface Vlan-interfacevlan-id —Configure the switch towork in the NTP multicastserver modentp-servicemulticast-server[ ip-address ][ authentication-keyidkeyid | ttl ttl-number |version number ]*RequiredNot configured by default.II. Configuring a switch to work in the multicast client modeFollow these steps to configure a switch to work in the NTP multicast client mode:To do… Use the command… RemarksEnter system view system-view —Enter VLAN interface view interface Vlan-interfacevlan-id —Configure the switch towork in the NTP multicastclient modentp-servicemulticast-client[ ip-address ]RequiredNot configured by default.1.4 Configuring Access Control RightWith the following command, you can configure the NTP service access-control right tothe local switch for a peer device. There are four access-control rights, as follows:z query: Control query right. This level of right permits the peer device to performcontrol query to the NTP service on the local device but does not permit the peerdevice to synchronize its clock to the local device. The so-called “control query”
