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Time Protocols
Overview
Overview
This chapter describes:
■
SNTP Time Protocol Operation
■
Timep Time Protocol Operation
Using time synchronization ensures a uniform time among interoperating
devices. This helps you to manage and troubleshoot switch operation by
attaching meaningful time data to event and error messages.
The switch offers TimeP and SNTP (Simple Network Time Protocol) and a
timesync
command for changing the time protocol selection (or turning off
time protocol operation).
N o t e s
■
Although you can create and save configurations for both time proto
cols without conflicts, the switch allows only one active time protocol
at any time.
■
In the factory-default configuration, the time synchronization option
is set to TimeP, with the TimeP mode itself set to
Disabled
.
TimeP Time Synchronization
You can either manually assign the switch to use a TimeP server or use DHCP
to assign the TimeP server. In either case, the switch can get its time synchro
nization updates from only one, designated Timep server. This option
enhances security by specifying which time server to use.
SNTP Time Synchronization
SNTP provides two operating modes:
■
Broadcast Mode:
The switch acquires time updates by accepting the
time value from the first SNTP time broadcast detected. (In this case,
the SNTP server must be configured to broadcast time updates to the
network broadcast address. Refer to the documentation provided
with your SNTP server application.) Once the switch detects a partic
9-2
Содержание ProCurve 1600M
Страница 1: ...Management and Configuration Guide 8200zl ProCurve Switches K 12 XX www procurve com ...
Страница 2: ......
Страница 3: ...ProCurve Series 8200zl Switches September 2007 K 12 xx Management and Configuration Guide ...
Страница 68: ...Using the Menu Interface Where To Go From Here 3 16 ...
Страница 110: ...Using the ProCurve Web Browser Interface Status Reporting Features 5 26 ...
Страница 152: ...Switch Memory and Configuration Multiple Configuration Files 6 42 ...
Страница 192: ...Configuring IP Addressing IP Preserve Retaining VLAN 1 IP Addressing Across Configuration File Downloads 8 24 ...
Страница 220: ...Time Protocols SNTP Messages in the Event Log 9 28 ...
Страница 252: ...Port Status and Configuration Uni Directional Link Detection UDLD 10 32 ...
Страница 282: ...Power Over Ethernet PoE Operation PoE Operating Notes 11 30 ...
Страница 472: ...Redundancy Switch 8212zl Event Log Messages 15 48 ...
Страница 510: ...File Transfers Copying Diagnostic Data to a Remote Host USB Device PC or UNIX Workstation A 38 ...
Страница 584: ...Monitoring and Analyzing Switch Operation Locating a Device B 74 ...
Страница 652: ...Troubleshooting Restoring a Flash Image C 68 ...
Страница 660: ...MAC Address Management Viewing the MAC Addresses of Connected Devices D 8 ...
Страница 666: ...Monitoring Resources When Insufficient Resources Are Available E 6 ...
Страница 670: ...Daylight Savings Time on ProCurve Switches F 4 ...
Страница 688: ...18 Index ...
Страница 689: ......