Users Guide

Because many polls to NTP hosts can aect network performance, Dell EMC Networking recommends limiting the
number of hosts congured.
By default, the system performs a time synchronization if the time dierence from the time source is greater than
one second.
When the Dell EMC Networking OS NTP client receives inconsistent timestamp in the origin timestamp led, it
logs the syslog message. It is due to the older versions of NTPD server implementation. Upgrade the system to the
latest NTPD package in the NTP server and the system logs the following NTP syslog message:
Dell EMC# May 30 13:27:46 %STKUNIT2-:CP %ntp-6-: receive: Unexpected origin
timestamp 0xdeb95bee.06ba346e does not match aorg 0000000000.00000000 from
server@10.16.151.117 xmt 0xdeb95bee.30907a87
In general, the packet denied services are dropped with no further action except incrementing the statistics
counters. In certain cases, a more proactive response is required to cause the client to slow down the process. A
special packet is created to serve this purpose, and it is called the kiss-o-Death (KoD) packet. When the Dell EMC
Networking OS client receives KoD packets, it logs the following syslog message:
Dell EMC# May 27 14:32:13 %STKUNIT1-:CP %ntp-6-: receive: KoD packet from
300::2 has inconsistent xmt/org/rec timestamps. Ignoring.
Related Commands
• show ntp associations—displays the NTP servers that are congured and their status.
ntp source
Specify an interface’s IP address to be included in the NTP packets.
Syntax
ntp source interface
To delete the conguration, use the no ntp source command.
Parameters
interface Enter the following keywords and slot/port or number information:
• For a 10-Gigabit Ethernet interface, enter the keyword TenGigabitEthernet then
the slot/port/subport[/subport] information.
• For a 40-Gigabit Ethernet interface, enter the keyword fortyGigE then the slot/
port information.
•
For a Loopback interface, enter the keyword loopback then a number from 0 to
16383.
• For the Management interface, enter the keyword ManagementEthernet then
slot/port information.
• For a port-channel interface, enter the keywords port-channel then the port-
channel ID.
• For VLAN interface, enter the keyword vlan then a number from 1 to 4094.
Defaults Not congured.
Command Modes CONFIGURATION
Command History
This guide is platform-specic. For command information about other platforms, see the relevant Dell EMC
Networking OS Command Line Reference Guide.
System Time and Date 1873