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Configuring System Information
34
ProSafe M5300 Switch
Time
ProSafe software supports the Simple Network Time Protocol (SNTP).
SNTP assures accurate network device clock time synchronization up to the millisecond.
Time synchronization is performed by a network SNTP server. ProSafe software operates
only as an SNTP client and cannot provide time services to other systems.
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
device receives time from stratum 1 and above since it is itself a stratum 2 device.
The following is an example of stratums:
• Stratum 0: A real-time clock is used as the time source, for example, a GPS system.
• Stratum 1: A server that is directly linked to a Stratum 0 time source is used. Stratum 1
time servers provide primary network time standards.
• Stratum 2: The time source is distanced from the Stratum 1 server over a network path.
For example, a Stratum 2 server receives the time over a network link, via NTP, from a
Stratum 1 server.
Information received from SNTP servers is evaluated based on the time level and server
type.
SNTP time definitions are assessed and determined by the following time levels:
• T1: Time at which the original request was sent by the client.
• T2: Time at which the original request was received by the server.
• T3: Time at which the server sent a reply.
• T4: Time at which the client received the server's reply.
IsRtr True(1) if the neighbor machine is a router, false(2)
otherwise.
Neighbor State The state of the neighboring switch:
• reachable(1) - The neighbor is reachable by this
switch.
• stale(2) - Information about the neighbor is
scheduled for deletion.
• delay(3) - No information has been received from
neighbor during delay period.
• probe(4) - Switch is attempting to probe for this
neighbor.
• unknown(6) - Unknown status.
Last Updated The last sysUpTime that this neighbor has been
updated.
Field Description