Operation Manual – NTPH3C S7500 Series Ethernet Switches Chapter 1 NTP Configuration1-11Note:The procedures for configuring NTP authentication on the server are the same as thoseon the client. Besides, the client and the server must be configured with the sameauthentication key.1.5 Configuration of Optional NTP ParametersThe configurations of optional NTP parameters are:z Setting the local clock as the NTP master clockz Configuring the local VLAN interface that sends NTP packetsz Configuring the number of the dynamic sessions that can be established locallyz Disabling the VLAN interface configured on a switch from receiving NTP packetsz Disabling NTP service globallyFollow these steps to configure optional NTP parameters:To do... Use the command... RemarksEnter system view system-view —Configure the local clockas the NTP master clockntp-servicerefclock-master[ ip-address ] [ stratum ]OptionalConfigure the localinterface that sends NTPpacketsntp-servicesource-interfaceinterface-typeinterface-numberOptionalConfigure the number ofthe sessions that can beestablished locallyntp-servicemax-dynamic-sessionsnumberOptionalBy default, up to 100dynamic sessions can beestablished locally.Enter VLAN interface view interface interface-typeinterface-number —Disable the interface fromreceiving NTP packetsntp-service in-interfacedisableOptionalBy default, a VLANinterface receives NTPpackets.Return to system view quit —Disable NTP serviceglobally ntp-service disableOptionalBy default, the NTPservice is enabled
