Why is the system time needed, How does sntp work – Dell POWEREDGE M1000E User Manual
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Managing General System Settings
281
SDM Template Configuration Guidelines
When you configure the switch to use an SDM template that is not currently
in use, you must reload the switch for the configuration to take effect.
If the IPv4 Routing or IPv4 Data Center template is currently in use and you
attempt to configure IPv6 routing features without first selecting the Dual
IPv4-IPv6 Routing template, the IPv6 commands do not take effect. IPv6
features are not available when an IPv4-only template is active.
Why is the System Time Needed?
The switch uses the system clock to provide time stamps on log messages.
Additionally, some show commands include the time in the command
output. For example, the show users login-history command includes a Login
Time field. The system clock provides the information for the Login Time
field.
How Does SNTP Work?
SNTP assures accurate switch clock time synchronization. Time
synchronization is performed by a network SNTP server.
IPv6 Neighbor Discovery
Protocol (NDP) entries
2560
0
0
IPv6 unicast routes
4096
0
0
ECMP next hops
4
4
16
IPv4 multicast routes
1536
2048
2048
IPv6 multicast routes
512
0
0
NOTE:
If you attach a unit to a stack and its template does not match the stack's
template, then the new unit will automatically reboot using the template used by
the management unit. To avoid the automatic reboot, you may first set the
template to the template used by the management unit. Then power off the new
unit, attach it to the stack, and power it on.
Table 11-3. SDM Template Parameters and Values (Continued)
Parameter
Dual IPv4/IPv6
IPv4 Only
IPv4 Data Center