– For a 40-Gigabit Ethernet interface, enter the keyword fortyGigE then the slot/port information.
To view the configuration, use the show running-config ntp command in EXEC privilege mode
(refer to the example in Configuring NTP Authentication).
Configuring 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 the Dell Networking OS uses the message digest 5 (MD5) algorithm and the key is
embedded in the synchronization packet that is sent to an NTP time source.
To configure NTP authentication, use the following commands.
1. Enable NTP authentication.
CONFIGURATION mode
ntp authenticate
2. Set an authentication key.
CONFIGURATION mode
ntp authentication-key number md5 key
Configure the following parameters:
•number: the range is from 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.
3. Define a trusted key.
CONFIGURATION mode
ntp trusted-key number
Configure a number from 1 to 4294967295.
The number must be the same as the number used in the ntp authentication-key command.
4. Configure an NTP server.
CONFIGURATION mode
ntp server [vrf] <vrf-name> {hostname | ipv4-address |ipv6-address} [ key
keyid] [prefer] [version number]
Configure the IP address of a server and the following optional parameters:
• – vrf-name : Enter the name of the VRF through which the NTP server is reachable.
–hostname : Enter the keyword hostname to see the IP address or host name of the remote
device.
–ipv4-address : Enter an IPv4 address in dotted decimal format (A.B.C.D).
–ipv6-address : Enter an IPv6 address in the format
0000:0000:0000:0000:0000:0000:0000:0000. Elision of zeros is supported.
System Time and Date 929