Dell Force10 MXL Blade MXL 10/40GbE Switch IO Module Configuration Guide - Page 602
Con NTP Authentication
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www.dell.com | support.dell.com To configure an IP address as the source address of NTP packets, use the following command in CONFIGURATION mode: Command Syntax ntp source interface Command Mode Purpose CONFIGURATION Enter the following keywords and slot/port or number information: • For a loopback interface, enter the keyword loopback followed by a number between 0 and 16383. • For a port channel interface, enter the keyword lag followed by a number from 1 to 128. • For a 10-Gigabit Ethernet interface, enter the keyword TenGigabitEthernet followed by the slot/port information. • For a VLAN interface, enter the keyword vlan followed by a number from 1 to 4094. • For a 40-Gigabit Ethernet interface, enter the keyword fortyGigE followed by the slot/port information. To view the configuration, use the show running-config ntp command in EXEC privilege mode. Configure NTP Authentication NTP authentication and the corresponding trusted key provide a reliable means of exchanging NTP packets with trusted time sources. NTP authentication begins when the first NTP packet is created following the configuration of keys. NTP authentication in FTOS uses the MD5 algorithm and the key is embedded in the synchronization packet that is sent to an NTP time source. To configure NTP authentication, follow these steps. Step Command Syntax 1 ntp authenticate 2 ntp authentication-key number md5 key 3 ntp trusted-key number Command Mode CONFIGURATION CONFIGURATION CONFIGURATION Purpose Enable NTP authentication. Set an authentication key. Configure the following parameters: number: Range 1 to 4294967295. This number must be the same as the number in the ntp trusted-key command. key: Enter a text string. This text string is encrypted. Define a trusted key. Configure a number from 1 to 4294967295. The number must be the same as the number used in the ntp authentication-key command. To view the NTP configuration, use the show running-config ntp command in EXEC privilege mode (Figure 34-5). Figure 34-5 shows an encrypted authentication key. All keys are encrypted. 600 | System Time and Date
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