Brocade Multi-Service IronWare Administration Guide (Supporting R05.6.00) - Manual (Page 283)

Multi-Service IronWare Administration Guide 265
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Configuring NTP
7
Synchronizing time
After the system peer is chosen, the system time is synchronized using one of the following ways
based on the time difference with system peer:
< 128 msec - The system clock is adjusted slowly towards the system peer time reference time.
> 128 msec and < 1000 sec - The system clock is stepped to the system peer reference time and
the NTP state information is cleared.
> 1000 sec - NTP is operationally disabled. The admin should set the time to the current UTC time.
Configuration considerations of NTP
• NTP multicast server, client, and manycast client functionalities are not supporte.
• While upgrading from R05.2.00 or lower versions to R05.3.00, the SNTP configuration will be
ignored.
• On reboot or MP switchover, all the NTP state information will be lost and time synchronization
will start from fresh. The time synchronized to real time clock is retained across reboot and MP
switchover.
• The following SNTP MIB objects are not supported.
- snNTPPollInterval
- snNTPSync
- All the objects in snNTPServerTable
• The web management support for SNTP is removed
The following optional features are not supported
• NTP version 4 Extension fields
• The NTP packets having control (6) or private (7) packet modes
• Autokey public key authentication
• NTP version 1 and 2
• Hostnames
Configuring NTP
Before you begin to configure NTP, you must use the clock set command to set the time on your
device to within 1000 seconds of the coordinated Universal Time (UTC).
Changing to the NTP mode
Use the ntp command to enable the NTP client and server mode.
Brocade(config)# ntp
Syntax: ntp