3Com 5500G-EI Command Reference Guide - Page 511

NTP Configuration Commands 511 System View: return to User View with Ctrl+Z. [SW5500]interface vlan-interface1 [SW5500-Vlan-Interface1]ntp-service in-interface disable ntp-service unicast-peer Syntax ntp-service unicast-peer ip-address [ version number | authentication-key keyid | source-interface { interface-name | interface-type interface-number } | priority ] undo ntp-service unicast-peer ip-address View System view Parameter ip-address : Specify the IP address of a remote server. version : Define NTP version number. number : NTP version number, ranging from 1 to 3. authentication-key : Define authentication key. keyid : Key ID used for transmitting messages to a remote server, ranging from 1 to 4294967295. source-interface : Specify the name of an interface. interface-name : Specify the interface name. When a local device sends an NTP message to a peer, the source IP address of the message is taken from the address of the interface. interface-type : Specify the interface type and determine an interface together with the interface-number parameter. interface-number : Specify the interface number and determine an interface together with the interface-type parameter. priority : Designate a server as the first choice. Description Use the ntp-service unicast-peer command to configure NTP peer mode. Use the undo ntp-service unicast-peer command to cancel NTP peer mode. By default, version number number defaults to 3, the authentication is disabled, and the local server is not the first choice. This command sets the remote server at ip-address as a peer of the local equipment, which operates in symmetric active mode. ip-address specifies a host address other than an IP address of broadcast, multicast, or reference clock. By operating in this mode, a local device can synchronize and be synchronized by a remote server. Example Configure the local equipment to synchronize or be synchronized by a peer at 128.108.22.44. Set the NTP version to 3. The IP address of the NTP packets are taken from that of Vlan-Interface1.