CISCO-NTP-MIB Table View

Table-centric layout grouping table, row, and column objects.

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Tables
2
Rows
2
Columns
35

cntpPeersVarTable

table
.1.3.6.1.4.1.9.9.168.1.2.1 · 1 row entry · 31 columns
Open in standard view 
This table provides information on the peers with
which the local NTP server has associations.  The
peers are also NTP servers but running on different
hosts.
cntpPeersVarEntry entry .1.3.6.1.4.1.9.9.168.1.2.1.1
Each peers' entry provides NTP information retrieved
from a particular peer NTP server. Each peer is
identified by a unique association identifier.

Entries are automatically created when the user
configure…
Indexes
cntpPeersAssocId
Column Syntax OID
cntpPeersAssocId
An integer value greater than 0 that uniquely
identifies a peer with which the local NTP server
is associated.
NTPAssocIdentifier
Textual Convention: NTPAssocIdentifier Integer32
Type Constraints:
range: 0..2147483647
 .1.3.6.1.4.1.9.9.168.1.2.1.1.1
cntpPeersConfigured
This is a bit indicating that the association
was created from configuration information and
should not be de-associated even if the peer
becomes unreachable.
SNMPv2-TCTruthValue
Textual Convention: SNMPv2-TCTruthValue Enumeration
Type Values:
1true
2false
 .1.3.6.1.4.1.9.9.168.1.2.1.1.2
cntpPeersPeerAddress
The IP address of the peer. When creating a new
association, a value should be set either for this
object or the corresponding instance of
cntpPeersPeerName, before the row is made active.
SNMPv2-SMIIpAddressr/w
Textual Convention: SNMPv2-SMIIpAddress OctetString
Type Constraints:
range: 4
 .1.3.6.1.4.1.9.9.168.1.2.1.1.3
cntpPeersPeerPort
The UDP port number on which the peer receives NTP
messages.
Integer32
Constraints:
range: 1-65535
 .1.3.6.1.4.1.9.9.168.1.2.1.1.4
cntpPeersHostAddress
The IP address of the local host. Multi-homing can
be supported using this object.
SNMPv2-SMIIpAddressr/w
Textual Convention: SNMPv2-SMIIpAddress OctetString
Type Constraints:
range: 4
 .1.3.6.1.4.1.9.9.168.1.2.1.1.5
cntpPeersHostPort
The UDP port number on which the local host receives
NTP messages.
Integer32
Constraints:
range: 1-65535
 .1.3.6.1.4.1.9.9.168.1.2.1.1.6
cntpPeersLeap
Two-bit code warning of an impending leap
second to be inserted in the NTP timescale of
the peer.
NTPLeapIndicator
Textual Convention: NTPLeapIndicator Enumeration
Type Values:
0noWarning
1addSecond
2subtractSecond
3alarm
 .1.3.6.1.4.1.9.9.168.1.2.1.1.7
cntpPeersMode
The association mode of the NTP server, with values
coded as follows,
0, unspecified
1, symmetric active - A host operating in this mode
sends periodic messages regardless of the
reachability state or st…
Enumerationr/w
Enumerated Values:
0unspecified
1symmetricActive
2symmetricPassive
3client
4server
5broadcast
6reservedControl
7reservedPrivate
 .1.3.6.1.4.1.9.9.168.1.2.1.1.8
cntpPeersStratum
The stratum of the peer clock.
NTPStratum
Textual Convention: NTPStratum Integer32
Type Constraints:
range: 0..255
 .1.3.6.1.4.1.9.9.168.1.2.1.1.9
cntpPeersPeerPoll
The interval at which the peer polls the local host.
NTPPollInterval
Textual Convention: NTPPollInterval Integer32
Type Constraints:
range: -20..20
 .1.3.6.1.4.1.9.9.168.1.2.1.1.10
cntpPeersHostPoll
The interval at which the local host polls the peer.
NTPPollInterval
Textual Convention: NTPPollInterval Integer32
Type Constraints:
range: -20..20
 .1.3.6.1.4.1.9.9.168.1.2.1.1.11
cntpPeersPrecision
Signed integer indicating the precision of the peer
clock, in seconds to the nearest power of two. The
value must be rounded to the next larger power of
two; for instance, a 50-Hz (20 ms) or 60-Hz
(16.67 ms) power-freq…
Integer32
Constraints:
range: -20-20
 .1.3.6.1.4.1.9.9.168.1.2.1.1.12
cntpPeersRootDelay
A signed fixed-point number indicating the total
round-trip delay in seconds, from the peer to the
primary reference source at the root of the
synchronization subnet.
secondsNTPSignedTimeValue
Textual Convention: NTPSignedTimeValue OctetString
Type Constraints:
range: 4
 .1.3.6.1.4.1.9.9.168.1.2.1.1.13
cntpPeersRootDispersion
The maximum error in seconds, of the peer clock
relative to the primary reference source at the root
of the synchronization subnet. Only positive values
greater than zero are possible.
secondsNTPUnsignedTimeValue
Textual Convention: NTPUnsignedTimeValue OctetString
Type Constraints:
range: 4
 .1.3.6.1.4.1.9.9.168.1.2.1.1.14
cntpPeersRefId
The reference identifier of the peer.
NTPRefId
Textual Convention: NTPRefId OctetString
Type Constraints:
range: 4
 .1.3.6.1.4.1.9.9.168.1.2.1.1.15
cntpPeersRefTime
The local time at the peer when its clock was last
updated. If the peer clock has never been
synchronized, the value is zero.
NTPTimeStamp
Textual Convention: NTPTimeStamp OctetString
Type Constraints:
range: 8
 .1.3.6.1.4.1.9.9.168.1.2.1.1.16
cntpPeersOrgTime
The local time at the peer, when its latest
NTP message was sent. If the peer becomes unreachable
the value is set to zero.
NTPTimeStamp
Textual Convention: NTPTimeStamp OctetString
Type Constraints:
range: 8
 .1.3.6.1.4.1.9.9.168.1.2.1.1.17
cntpPeersReceiveTime
The local time, when the latest NTP message from
the peer arrived. If the peer becomes unreachable
the value is set to zero.
NTPTimeStamp
Textual Convention: NTPTimeStamp OctetString
Type Constraints:
range: 8
 .1.3.6.1.4.1.9.9.168.1.2.1.1.18
cntpPeersTransmitTime
The local time at which the NTP message departed the
sender.
NTPTimeStamp
Textual Convention: NTPTimeStamp OctetString
Type Constraints:
range: 8
 .1.3.6.1.4.1.9.9.168.1.2.1.1.19
cntpPeersUpdateTime deprecated
The local time, when the most recent NTP message was
received from the peer that was used to calculate the
skew dispersion. This represents only the 32-bit
integer part of the NTPTimestamp.
Integer32
Constraints:
range: 0-2147483647
 .1.3.6.1.4.1.9.9.168.1.2.1.1.20
cntpPeersReach
A shift register of 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 on…
Integer32
Constraints:
range: 0-255
 .1.3.6.1.4.1.9.9.168.1.2.1.1.21
cntpPeersTimer
The interval in seconds, between transmitted NTP
messages from the local host to the peer.
secondsInteger32
Constraints:
range: 0-2147483647
 .1.3.6.1.4.1.9.9.168.1.2.1.1.22
cntpPeersOffset
The estimated offset of the peer clock relative to
the local clock, in seconds. The host determines the
value of this object using the NTP clock-filter
algorithm.
secondsNTPSignedTimeValue
Textual Convention: NTPSignedTimeValue OctetString
Type Constraints:
range: 4
 .1.3.6.1.4.1.9.9.168.1.2.1.1.23
cntpPeersDelay
The estimated round-trip delay of the peer clock
relative to the local clock over the network path
between them, in seconds. The host determines the
value of this object using the NTP clock-filter
algorithm.
secondsNTPSignedTimeValue
Textual Convention: NTPSignedTimeValue OctetString
Type Constraints:
range: 4
 .1.3.6.1.4.1.9.9.168.1.2.1.1.24
cntpPeersDispersion
The estimated maximum error of the peer clock
relative to the local clock over the network path
between them, in seconds. The host determines the
value of this object using the NTP clock-filter
algorithm.
secondsNTPUnsignedTimeValue
Textual Convention: NTPUnsignedTimeValue OctetString
Type Constraints:
range: 4
 .1.3.6.1.4.1.9.9.168.1.2.1.1.25
cntpPeersFilterValidEntries
The number of valid entries for a peer in the
Filter Register Table. Since, the Filter Register
Table is optional, this object will have a value 0
if the Filter Register Table is not implemented.
SNMPv2-SMIGauge32
Textual Convention: SNMPv2-SMIGauge32 Unsigned32
Type Constraints:
range: 0..4294967295
 .1.3.6.1.4.1.9.9.168.1.2.1.1.26
cntpPeersEntryStatus
The status object for this row. When a management
station is creating a new row, it should set the
value for cntpPeersPeerAddress at least, before the
row can be made active(1).
SNMPv2-TCRowStatusr/w
Textual Convention: SNMPv2-TCRowStatus Enumeration
Type Values:
1active
2notInService
3notReady
4createAndGo
5createAndWait
6destroy
 .1.3.6.1.4.1.9.9.168.1.2.1.1.27
cntpPeersUpdateTimeRev1
The local time, when the most recent NTP message was
received from the peer that was used to calculate the
skew dispersion. This represents only the 32-bit
integer part of the NTPTimestamp.
SNMPv2-SMIUnsigned32
Textual Convention: SNMPv2-SMIUnsigned32 Unsigned32
Type Constraints:
range: 0..4294967295
 .1.3.6.1.4.1.9.9.168.1.2.1.1.28
cntpPeersPrefPeer
This object specifies whether this peer is the
preferred one over the others. By default, when
the value of this object is 'false', NTP chooses
the peer with which to synchronize the time on
the local system. If this …
SNMPv2-TCTruthValuer/w
Textual Convention: SNMPv2-TCTruthValue Enumeration
Type Values:
1true
2false
 .1.3.6.1.4.1.9.9.168.1.2.1.1.29
cntpPeersPeerType
Represents the type of the corresponding instance
of cntpPeersPeerName object.
INET-ADDRESS-MIBInetAddressTyper/w
Textual Convention: INET-ADDRESS-MIBInetAddressType Enumeration
Type Values:
0unknown
1ipv4
2ipv6
3ipv4z
4ipv6z
16dns
25l2vpn
 .1.3.6.1.4.1.9.9.168.1.2.1.1.30
cntpPeersPeerName
The address of the peer. When creating a new
association, a value must be set for either this
object or the corresponding instance of
cntpPeersPeerAddress object, before the row
is made active.
INET-ADDRESS-MIBInetAddressr/w
Textual Convention: INET-ADDRESS-MIBInetAddress OctetString
Type Constraints:
range: 0..255
 .1.3.6.1.4.1.9.9.168.1.2.1.1.31

cntpFilterRegisterTable

table
.1.3.6.1.4.1.9.9.168.1.3.2 · 1 row entry · 4 columns
Open in standard view 
The following table contains NTP state variables
used by the NTP clock filter and selection algorithms.
This table depicts a shift register.  Each stage in
the shift register is a 3-tuple consisting of the
measured clock offset, measured clock delay and
measured clock dispersion associated with a single
observation.
          
An important factor affecting the accuracy and
reliability of time distribution is the complex of
algorithms used to reduce the effect of statistical
errors and falsetickers due to failure of various
subnet components, reference sources or propagation
media.  The NTP clock-filter and selection algorithms
are designed to do exactly this.  The objects in the
filter register table below are used by these
algorthims to minimize the error in the calculated
time.
cntpFilterRegisterEntry entry .1.3.6.1.4.1.9.9.168.1.3.2.1
Each entry corresponds to one stage of the shift
register, i.e., one reading of the variables clock
delay, clock offset and clock dispersion.

Entries are automatically created whenever a peer is
configured …
Indexes
cntpPeersAssocId cntpFilterIndex
Column Syntax OID
cntpFilterIndex
An integer value in the specified range that is used
to index into the table. The size of the table is
fixed at 8. Each entry identifies a particular
reading of the clock filter variables in the shift
register.
…
Integer32
Constraints:
range: 1-8
 .1.3.6.1.4.1.9.9.168.1.3.2.1.1
cntpFilterPeersOffset
The offset of the peer clock relative to the
local clock in seconds.
secondsNTPSignedTimeValue
Textual Convention: NTPSignedTimeValue OctetString
Type Constraints:
range: 4
 .1.3.6.1.4.1.9.9.168.1.3.2.1.2
cntpFilterPeersDelay
Round-trip delay of the peer clock relative to the
local clock over the network path between them, in
seconds. This variable can take on both positive and
negative values, depending on clock precision and
skew-error ac…
secondsNTPSignedTimeValue
Textual Convention: NTPSignedTimeValue OctetString
Type Constraints:
range: 4
 .1.3.6.1.4.1.9.9.168.1.3.2.1.3
cntpFilterPeersDispersion
The maximum error of the peer clock relative to the
local clock over the network path between them, in
seconds. Only positive values greater than zero are
possible.
secondsNTPUnsignedTimeValue
Textual Convention: NTPUnsignedTimeValue OctetString
Type Constraints:
range: 4
 .1.3.6.1.4.1.9.9.168.1.3.2.1.4