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Windows Time Server

3.2.3 Peer Variables

                             


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.