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Managing General System Settings
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.
Time sources are established by Stratums. Stratums define the accuracy of
the reference clock. The higher the stratum (where zero is the highest), the
more accurate the clock. The switch is at a stratum that is one lower than its
time source. For example, if the SNTP server in an internal network is a
Stratum 3 device, the switch is a Stratum 4 device.
You can configure the switch to request the time from an SNTP server on the
network, or you can allow the switch to receive SNTP broadcasts.
Requesting the time from a unicast SNTP server is more secure. Use this
method if you know the IP address of the SNTP server on your network. If you
allow the switch to receive SNTP broadcasts, any clock synchronization
information is accepted, even if it has not been requested by the device. This
method is less secure than polling a specified SNTP server.
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.
Содержание PowerConnect 7024
Страница 134: ...134 Setting Basic Network Information ...
Страница 290: ...290 Managing General System Settings Figure 11 14 SNTP Servers Table ...
Страница 348: ...348 Configuring SNMP ...
Страница 430: ...430 Monitoring Switch Traffic ...
Страница 444: ...444 Configuring iSCSI Optimization ...
Страница 521: ...Configuring 802 1X and Port Based Security 521 Figure 19 8 Configure Port Security Settings 5 Click Apply ...
Страница 538: ...538 Configuring 802 1X and Port Based Security ...
Страница 585: ...Configuring VLANs 585 Figure 21 5 Add Ports to VLAN 4 Click Apply 5 Verify that the ports have been added to the VLAN ...
Страница 594: ...594 Configuring VLANs Figure 21 16 GVRP Port Parameters Table ...
Страница 600: ...600 Configuring VLANs Figure 21 23 Double VLAN Port Parameter Table ...
Страница 658: ...658 Configuring the Spanning Tree Protocol ...
Страница 693: ...Configuring Port Based Traffic Control 693 Figure 24 3 Storm Control 5 Click Apply ...
Страница 780: ...780 Configuring Connectivity Fault Management ...
Страница 804: ...804 Snooping and Inspecting Traffic Figure 27 17 DAI Interface Configuration Summary ...
Страница 818: ...818 Snooping and Inspecting Traffic ...
Страница 836: ...836 Configuring Link Aggregation ...
Страница 882: ...882 Configuring DHCP Server Settings ...
Страница 916: ...916 Configuring L2 and L3 Relay Features Figure 33 3 DHCP Relay Interface Summary ...
Страница 924: ...924 Configuring L2 and L3 Relay Features Figure 33 12 IP Helper Statistics ...
Страница 930: ...930 Configuring L2 and L3 Relay Features ...
Страница 1004: ...1004 Configuring OSPF and OSPFv3 ...
Страница 1044: ...1044 Configuring VRRP ...
Страница 1057: ...Configuring IPv6 Routing 1057 Figure 37 9 IPv6 Route Preferences ...
Страница 1064: ...1064 Configuring IPv6 Routing ...
Страница 1084: ...1084 Configuring DHCPv6 Server and Relay Settings ...
Страница 1091: ...Configuring Differentiated Services 1091 Figure 39 5 DiffServ Class Criteria ...
Страница 1114: ...1114 Configuring Differentiated Services ...
Страница 1130: ...1130 Configuring Class of Service ...
Страница 1136: ...1136 Configuring Auto VoIP ...
Страница 1216: ...1216 Managing IPv4 and IPv6 Multicast ...