Brocade BigIron RX Series Configuration Guide User Manual
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BigIron RX Series Configuration Guide
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Specifying a Simple Network Time Protocol (SNTP) server
5
Specifying a Simple Network Time Protocol (SNTP) server
You can configure the BigIron RX to consult up to three SNTP servers to establish the current
system time and date. The order in which the SNTP servers are configured is the order in which
they are consulted. The server that was configured first is the first server consulted after the poll
cycle; the next server will be consulted only if a positive ACK is not received from the first one.
NOTE
The device does not retain time and date information across power cycles. Unless you want to
reconfigure the system time counter each time the system is reset, Brocade recommends that you
use the SNTP feature.
To identify an SNTP server with IP address 208.99.8.95 to act as the clock reference for a device,
enter the following.
BigIron RX(config)# sntp server 208.99.8.95
Syntax: sntp server <ip-addr> | <hostname> [<version>]
The <version> parameter specifies the SNTP version the server is running and can be from 1 – 4.
The default is 1. You can configure up to three SNTP servers by entering three separate sntp server
commands.
By default, the device polls its SNTP server every 30 minutes (1800 seconds). To configure the
device to poll for clock updates from a SNTP server every 15 minutes, enter the following.
BigIron RX(config)# sntp poll-interval 900
Syntax: [no] sntp poll-interval <1-65535>
To display information about SNTP associations, enter the following command.
Syntax: show sntp associations
The following table describes the information displayed by the show sntp associations command.
TABLE 43
Output from the show sntp associations command
This field...
Displays...
(leading character)
One or both of the following:
*
Synchronized to this peer
~
Peer is statically configured
address
IP address of the peer
ref clock
IP address of the peer’s reference clock
st
NTP stratum level of the peer
when
Amount of time since the last NTP packet was received from the peer
poll
Poll interval in seconds
delay
Round trip delay in milliseconds
disp
Dispersion in seconds
BigIron RX# show sntp associations
address ref clock st when poll delay disp
*~207.95.6.102 216.218.254.202 2 63 1800 0.002 0.039
~207.95.6.101 0.0.0.0 16 -1 1800 0.000 0.000
* synced, ~ configured