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Clock Commands
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Clock Commands
Real-time Clock
The PowerConnect supports a real-time clock that maintains the system time
across reboots. The system time is used to timestamp messages in the logging
subsystem as well as for the application of time based ACLs. The
administrator has the ability to configure and view the current time, time
zone, and summer time settings.
The earliest date that can be configured is Jan 1, 2010.
Simple Network Time Protocol
The Simple Network Time Protocol (SNTP) is widely used for synchronizing
network resources. SNTP Version 4 is described in RFC 2030. SNTP is an
adaptation of the Network Time Protocol (RFC 1305) useful for situations
where the full performance of NTP is not justified. SNTP can operate in
unicast mode (point-to-point) or broadcast mode (point-to-multipoint).
Various NTP implementations can operate as either a client or a server. To an
NTP or SNTP server, NTP and SNTP clients are indistinguishable. Likewise,
to an NTP or SNTP client, NTP and SNTP servers are indistinguishable.
Furthermore, any version of NTP is compatible with any other version of NTP.
PowerConnect SNTP implements the client side of SNTP.
Support for IPv6 address configuration is provided to the existing SNTP
client. The end user can configure either an IPv4 or IPv6 address or a host
name for an SNTP server among the list of servers. In unicast mode, one of
the servers from the list is selected as the active server to be used for polling
based on priority and configured order. The servers are treated alike
independent of IPv4 or IPv6 or hostname address formats.At any given point
of time, the client operates in unicast or broadcast mode.In broadcast mode,
SNTP client listens for server packets from IPv4 and IPv6 networks at the
same time on port number 123.On IPv6 networks, the SNTP client listens to
2CSPC4.XCT-SWUM2XX1.book Page 1349 Monday, October 3, 2011 11:05 AM
Содержание PowerConnect 7000 Series
Страница 74: ...74 Contents 2CSPC4 XCT SWUM2XX1 book Page 74 Monday October 3 2011 11 05 AM ...
Страница 164: ...164 Command Groups 2CSPC4 XCT SWUM2XX1 book Page 164 Monday October 3 2011 11 05 AM ...
Страница 238: ...238 Layer 2 Switching Commands 2CSPC4 XCT SWUM2XX1 book Page 238 Monday October 3 2011 11 05 AM ...
Страница 266: ...266 AAA Commands 2CSPC4 XCT SWUM2XX1 book Page 266 Monday October 3 2011 11 05 AM ...
Страница 316: ...316 Auto VoIP Commands 2CSPC4 XCT SWUM2XX1 book Page 316 Monday October 3 2011 11 05 AM ...
Страница 344: ...344 DHCP Layer 2 Relay Commands 2CSPC4 XCT SWUM2XX1 book Page 344 Monday October 3 2011 11 05 AM ...
Страница 352: ...352 DHCP Management Interface Commands 2CSPC4 XCT SWUM2XX1 book Page 352 Monday October 3 2011 11 05 AM ...
Страница 368: ...368 DHCP Snooping Commands 2CSPC4 XCT SWUM2XX1 book Page 368 Monday October 3 2011 11 05 AM ...
Страница 382: ...382 Dynamic ARP Inspection Commands 2CSPC4 XCT SWUM2XX1 book Page 382 Monday October 3 2011 11 05 AM ...
Страница 434: ...434 Ethernet Configuration Commands 2CSPC4 XCT SWUM2XX1 book Page 434 Monday October 3 2011 11 05 AM ...
Страница 454: ...454 Ethernet CFM Commands 2CSPC4 XCT SWUM2XX1 book Page 454 Monday October 3 2011 11 05 AM ...
Страница 468: ...468 Green Ethernet Commands 2CSPC4 XCT SWUM2XX1 book Page 468 Monday October 3 2011 11 05 AM ...
Страница 532: ...532 IPv6 Access List Commands 2CSPC4 XCT SWUM2XX1 book Page 532 Monday October 3 2011 11 05 AM ...
Страница 544: ...544 IPv6 MLD Snooping Commands 2CSPC4 XCT SWUM2XX1 book Page 544 Monday October 3 2011 11 05 AM ...
Страница 558: ...558 IP Source Guard Commands 2CSPC4 XCT SWUM2XX1 book Page 558 Monday October 3 2011 11 05 AM ...
Страница 570: ...570 iSCSI Optimization Commands 2CSPC4 XCT SWUM2XX1 book Page 570 Monday October 3 2011 11 05 AM ...
Страница 578: ...578 Link Dependency Commands 2CSPC4 XCT SWUM2XX1 book Page 578 Monday October 3 2011 11 05 AM ...
Страница 606: ...606 LLDP Commands 2CSPC4 XCT SWUM2XX1 book Page 606 Monday October 3 2011 11 05 AM ...
Страница 700: ...700 QoS Commands 2CSPC4 XCT SWUM2XX1 book Page 700 Monday October 3 2011 11 05 AM ...
Страница 728: ...728 RADIUS Commands 2CSPC4 XCT SWUM2XX1 book Page 728 Monday October 3 2011 11 05 AM ...
Страница 808: ...808 VLAN Commands 2CSPC4 XCT SWUM2XX1 book Page 808 Monday October 3 2011 11 05 AM ...
Страница 814: ...814 Voice VLAN Commands 2CSPC4 XCT SWUM2XX1 book Page 814 Monday October 3 2011 11 05 AM ...
Страница 848: ...848 802 1x Commands 2CSPC4 XCT SWUM2XX1 book Page 848 Monday October 3 2011 11 05 AM ...
Страница 850: ...850 Layer 3 Commands 2CSPC4 XCT SWUM2XX1 book Page 850 Monday October 3 2011 11 05 AM ...
Страница 912: ...912 DHCPv6 Commands 2CSPC4 XCT SWUM2XX1 book Page 912 Monday October 3 2011 11 05 AM ...
Страница 920: ...920 DVMRP Commands 2CSPC4 XCT SWUM2XX1 book Page 920 Monday October 3 2011 11 05 AM ...
Страница 946: ...946 IGMP Proxy Commands 2CSPC4 XCT SWUM2XX1 book Page 946 Monday October 3 2011 11 05 AM ...
Страница 1062: ...1062 IPv6 Routing Commands 2CSPC4 XCT SWUM2XX1 book Page 1062 Monday October 3 2011 11 05 AM ...
Страница 1066: ...1066 Loopback Interface Commands 2CSPC4 XCT SWUM2XX1 book Page 1066 Monday October 3 2011 11 05 AM ...
Страница 1174: ...1174 OSPF Commands 2CSPC4 XCT SWUM2XX1 book Page 1174 Monday October 3 2011 11 05 AM ...
Страница 1234: ...1234 OSPFv3 Commands 2CSPC4 XCT SWUM2XX1 book Page 1234 Monday October 3 2011 11 05 AM ...
Страница 1244: ...1244 Router Discovery Protocol Commands 2CSPC4 XCT SWUM2XX1 book Page 1244 Monday October 3 2011 11 05 AM ...
Страница 1260: ...1260 Routing Information Protocol Commands 2CSPC4 XCT SWUM2XX1 book Page 1260 Monday October 3 2011 11 05 AM ...
Страница 1292: ...1292 Virtual Router Redundancy Protocol Commands 2CSPC4 XCT SWUM2XX1 book Page 1292 Monday October 3 2011 11 05 AM ...
Страница 1294: ...1294 Utility Commands 2CSPC4 XCT SWUM2XX1 book Page 1294 Monday October 3 2011 11 05 AM ...
Страница 1304: ...1304 Auto Install Commands 2CSPC4 XCT SWUM2XX1 book Page 1304 Monday October 3 2011 11 05 AM ...
Страница 1338: ...1338 Captive Portal Commands 2CSPC4 XCT SWUM2XX1 book Page 1338 Monday October 3 2011 11 05 AM ...
Страница 1348: ...1348 CLI Macro Commands 2CSPC4 XCT SWUM2XX1 book Page 1348 Monday October 3 2011 11 05 AM ...
Страница 1366: ...1366 Clock Commands 2CSPC4 XCT SWUM2XX1 book Page 1366 Monday October 3 2011 11 05 AM ...
Страница 1372: ...1372 Command Line Configuration Scripting Commands 2CSPC4 XCT SWUM2XX1 book Page 1372 Monday October 3 2011 11 05 AM ...
Страница 1394: ...1394 Configuration and Image File Commands 2CSPC4 XCT SWUM2XX1 book Page 1394 Monday October 3 2011 11 05 AM ...
Страница 1458: ...1458 Power Over Ethernet Commands 2CSPC4 XCT SWUM2XX1 book Page 1458 Monday October 3 2011 11 05 AM ...
Страница 1478: ...1478 RMON Commands 2CSPC4 XCT SWUM2XX1 book Page 1478 Monday October 3 2011 11 05 AM ...
Страница 1518: ...1518 Sflow Commands 2CSPC4 XCT SWUM2XX1 book Page 1518 Monday October 3 2011 11 05 AM ...
Страница 1578: ...1578 Syslog Commands 2CSPC4 XCT SWUM2XX1 book Page 1578 Monday October 3 2011 11 05 AM ...
Страница 1641: ...System Management Commands 1641 2 3 4 5 2CSPC4 XCT SWUM2XX1 book Page 1641 Monday October 3 2011 11 05 AM ...
Страница 1642: ...1642 System Management Commands 2CSPC4 XCT SWUM2XX1 book Page 1642 Monday October 3 2011 11 05 AM ...
Страница 1646: ...1646 Telnet Server Commands 2CSPC4 XCT SWUM2XX1 book Page 1646 Monday October 3 2011 11 05 AM ...
Страница 1648: ...1648 Terminal Length Commands 2CSPC4 XCT SWUM2XX1 book Page 1648 Monday October 3 2011 11 05 AM ...
Страница 1686: ...1686 Web Server Commands 2CSPC4 XCT SWUM2XX1 book Page 1686 Monday October 3 2011 11 05 AM ...
Страница 1729: ...2CSPC4 XCT SWUM2XX1 book Page 1 Monday October 3 2011 11 05 AM ...
Страница 1730: ...www dell com support dell com Printed in the U S A 2CSPC4 XCT SWUM2XX1 book Page 2 Monday October 3 2011 11 05 AM ...