Dell Force10 E300, Configuration Manual, Page: 1077 / 1262

System Time and Date | 1077
• Root Delay (sys.rootdelay, peer.rootdelay, pkt.rootdelay): This is a signed fixed-point number
indicating the total roundtrip delay to the primary reference source at the root of the synchronization
subnet, in seconds. Note that this variable can take on both positive and negative values, depending on
clock precision and skew.
• Root Dispersion (sys.rootdispersion, peer.rootdispersion, pkt.rootdispersion): This is a signed
fixed-point number indicating the maximum error relative to the primary reference source at the root
of the synchronization subnet, in seconds. Only positive values greater than zero are possible.
• Reference Clock Identifier (sys.refid, peer.refid, pkt.refid): This is a 32-bit code identifying the
particular reference clock. In the case of stratum 0 (unspecified) or stratum 1 (primary reference
source), this is a four-octet, left-justified, zero-padded ASCII string, for example (see Appendix A for
comprehensive list): the case of stratum 2 and greater (secondary reference) this is the four-octet
Internet address of the peer selected for synchronization.
• Reference Timestamp (sys.reftime, peer.reftime, pkt.reftime): This is the local time, in timestamp
format, when the local clock was last updated. If the local clock has never been synchronized, the
value is zero.
• Originate Timestamp : The departure time on the server of its last NTP message. If the server
becomes unreachable, the value is set to zero.
• Receive Timestamp : The arrival time on the client of the last NTP message from the server. If the
server becomes unreachable, the value is set to zero.
• Transmit Timestamp : The departure time on the server of the current NTP message from the sender.
• Filter dispersion is the error in calculating the minimum delay from a set of sample data from a peer.
FTOS Time and Date
The time and date can be set using the FTOS CLI.
Configuring time and date settings
The following list includes the configuration tasks for setting the system time:
• Set the time and date for the switch hardware clock
• Set the time and date for the switch software clock
• Set the timezone
• Set daylight savings time
• Set Daylight Saving Time Once
• Set Recurring Daylight Saving Time