Windows Time Server


3.2.3 Peer Variables
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Peer Variables
Name
Procedure
Configured Bit
peer.config
initialization
Peer Address
peer.peeraddress
receive
Peer Port
peer.peerport
receive
Host Address
peer.hostaddress
receive
Host Port
peer.hostport
receive
Leap Indicator
peer.leap
packet
Mode
peer.mode
packet
Stratum
peer.stratum
packet
Peer Poll Interval
peer.peerpoll
packet
Host Poll Interval
peer.hostpoll
poll update
Precision
peer.precision
packet
Root Delay
peer.rootdelay
packet
Root Dispersion
peer.rootdispersion
packet
Reference Clock Ident
peer.refid
packet
Reference Timestamp
peer.reftime
packet
Originate Timestamp
peer.org
packet, clear
Receive Timestamp
peer.rec
packet, clear
Transmit Timestamp
peer.xmt
transmit, clear
Update Timestamp
peer.update
filter, clear
Reachability Register
peer.reach
packet, transmit,clear
Peer Timer
peer.timer
receive, transmit,poll update
Filter Register
peer.filter
filter
Valid Data Counter
peer.valid
transmit
Delay
peer.delay
filter
Offset
peer.offset
filter
Dispersion
peer.dispersion
filter
Authentic Enable Bit
peer.authenable
authentication
Authenticated Bit
peer.authentic
authentication
Host Key Identifier
peer.hostkeyid
authentication
Peer Key Identifier
peer.peerkeyid
authentication
 
2. Peer Variables  

Table 2 shows the complete set of peer variables. In addition to the common variables described previously, the following variables are used by the peer management and measurement functions.

Configured Bit (peer.config): This is a bit indicating that the association was created from configuration information and should not be demobilized if the peer becomes unreachable.

Update Timestamp (peer.update): This is the local time, in timestamp format, when the most recent NTP message was received. It is used in calculating the skew dispersion.

Reachability Register (peer.reach): This is a shift register of NTP.WINDOW bits used to determine the reachability status of the peer, with bits entering from the least significant (rightmost) end. A peer is
considered reachable if at least one bit in this register is set to one.

Peer Timer (peer.timer): This is an integer counter used to control the interval between transmitted NTP messages. Once set to a nonzero value, the counter decrements at one-second intervals until reaching zero, at which time the transmit procedure is called. Note that the operation of this timer is independent of local-clock updates, which implies that the timekeeping system and interval-timer system architecture must be independent of each other.


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