Dell Force10 MXL Blade - Configure NTP Authentication

600 | System Time and Date
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To configure an IP address as the source address of NTP packets, use the following command in
CONFIGURATION mode:
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.
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.
Command Syntax Command Mode Purpose
ntp source interface 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.
Step Command Syntax Command Mode Purpose
1
ntp authenticate
CONFIGURATION Enable NTP authentication.
2
ntp authentication-key number md5 key CONFIGURATION 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.
3
ntp trusted-key number CONFIGURATION 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.