Managing General System Settings 309Managing the SDM TemplateBeginning in Privileged EXEC mode, use the following commands to set theSDM template preference and to view information about the available SDMtemplates.Configuring SNTP Authentication and an SNTP ServerBeginning in Privileged EXEC mode, use the following commands to requirethe SNTP client to use authentication when communicating with the SNTPserver. The commands also show how to configure an SNTP server.Requiring authentication is optional. However, if you configureauthentication on the switch SNTP client, the SNTP server must beconfigured with the same authentication information to allow timesynchronization to take place between the two devices.Command Purposeconfigure Enter Global Configuration mode.sdm prefer {dual-ipv4-and-ipv6 default| ipv4-routing {data-center |default}}Select the SDM template to apply to the switch after thenext boot.CTRL + Z Exit to Privileged EXEC mode.show sdm prefer[template]View information about the SDM template the switch iscurrently using. Use thetemplate variable to view theparameters for the specified template.Command Purposeconfigure Enter Global Configuration mode.sntp authentication-keykey_id md5key_wordDefine an authentication key for SNTP. The variables are:•key_id— The encryption key ID, which is a number from1–4294967295.•key_word—The authentication key, which is a string ofup to eight characters.
