3.2.22. ntp¶
Top-level container for NTP configuration.
vsr running config# vrf <vrf> ntp
enabled (pushed)¶
Enable or disable the NTP protocol and indicates that the system should attempt to synchronize the system clock with an NTP server from the servers defined in the ‘ntp/server’ list.
vsr running config# vrf <vrf> ntp
vsr running ntp# enabled true|false
- Default value
true
ntp-source-address¶
Source address to use on outgoing NTP packets.
vsr running config# vrf <vrf> ntp
vsr running ntp# ntp-source-address NTP-SOURCE-ADDRESS
NTP-SOURCE-ADDRESS |
An IPv4 or IPv6 address. |
auth-key¶
List of NTP authentication keys.
vsr running config# vrf <vrf> ntp auth-key <uint16>
<uint16> |
Integer identifier used by the client and server to designate a secret key. The client and server must use the same key id. |
key-value¶
NTP authentication key value.
vsr running config# vrf <vrf> ntp auth-key <uint16>
vsr running auth-key <uint16># key-value <string>
server-subnet¶
Allow / deny NTP clients to connect to this instance.
vsr running config# vrf <vrf> ntp
vsr running ntp# server-subnet <uint16> allow ALLOW deny DENY
<uint16> |
List sequence. |
allow¶
Allow NTP clients on this subnet to request synchronization.
allow ALLOW
|
Description |
|---|---|
<ip-prefix> |
An IPv4 or IPv6 prefix: address and CIDR mask. |
<ip-address> |
An IPv4 or IPv6 address. |
all |
Allow all connections. |
deny¶
Deny NTP clients on this subnet to request synchronization.
deny DENY
|
Description |
|---|---|
<ip-prefix> |
An IPv4 or IPv6 prefix: address and CIDR mask. |
<ip-address> |
An IPv4 or IPv6 address. |
all |
Allow all connections. |
server¶
List of NTP servers to use for system clock synchronization. If ‘/system/ntp/enabled’ is ‘true’, then the system will attempt to contact and utilize the specified NTP servers.
vsr running config# vrf <vrf> ntp server <server>
<server> |
The host type represents either an unzoned IP address or a DNS domain name. |
version¶
Version number to put in outgoing NTP packets.
vsr running config# vrf <vrf> ntp server <server>
vsr running server <server># version <uint8>
association-type¶
The desired association type for this NTP server.
vsr running config# vrf <vrf> ntp server <server>
vsr running server <server># association-type ASSOCIATION-TYPE
|
Description |
|---|---|
SERVER |
Use client association mode. This device will not provide synchronization to the configured NTP server. |
PEER |
Use symmetric active association mode. This device may provide synchronization to the configured NTP server. |
POOL |
Use client association mode with one or more of the NTP servers found by DNS resolution of the domain name given by the ‘address’ leaf. This device will not provide synchronization to the servers. |
iburst¶
Indicates whether this server should enable burst synchronization or not.
vsr running config# vrf <vrf> ntp server <server>
vsr running server <server># iburst true|false
prefer¶
Indicates whether this server should be preferred or not.
vsr running config# vrf <vrf> ntp server <server>
vsr running server <server># prefer true|false
auth-key-id¶
Integer identifier used by the client and server to designate a secret key. The client and server must use the same key id.
vsr running config# vrf <vrf> ntp server <server>
vsr running server <server># auth-key-id <leafref>
stratum (state only)¶
Indicates the level of the server in the NTP hierarchy. As stratum number increases, the accuracy is degraded. Primary servers are stratum while a maximum value of 16 indicates unsynchronized. The values have the following specific semantics: | 0 | unspecified or invalid | 1 | primary server (e.g., equipped with a GPS receiver) | 2-15 | secondary server (via NTP) | 16 | unsynchronized | 17-255 | reserved.
vsr> show state vrf <vrf> ntp server <server> stratum
root-delay (state only)¶
The round-trip delay to the server, in milliseconds.
vsr> show state vrf <vrf> ntp server <server> root-delay
root-dispersion (state only)¶
Dispersion (epsilon) represents the maximum error inherent in the measurement.
vsr> show state vrf <vrf> ntp server <server> root-dispersion
offset (state only)¶
Estimate of the current time offset from the peer. This is the time difference between the local and reference clock.
vsr> show state vrf <vrf> ntp server <server> offset
poll-interval (state only)¶
Polling interval of the peer.
vsr> show state vrf <vrf> ntp server <server> poll-interval
synchronized (state only)¶
True if we are synchronized with this server.
vsr> show state vrf <vrf> ntp server <server> synchronized
state (state only)¶
The server status in the clock selection process.
vsr> show state vrf <vrf> ntp server <server> state
time-sources¶
List of servers.
vsr running config# vrf <vrf> ntp time-sources
makestep¶
Correct the system clock by slowing down or speeding up the clock as required.
vsr running config# vrf <vrf> ntp time-sources makestep
threshold¶
Step the system clock if the adjustment is larger this threshold value.
vsr running config# vrf <vrf> ntp time-sources makestep
vsr running makestep# threshold <uint32>
- Default value
1000
limit¶
Limit the step adjustment to this value.
vsr running config# vrf <vrf> ntp time-sources makestep
vsr running makestep# limit LIMIT
|
Description |
|---|---|
<uint16> |
No description. |
disabled |
Disable makestep. |
- Default value
3
server¶
List of NTP servers to use for system clock synchronization. If ‘/system/ntp/enabled’ is ‘true’, then the system will attempt to contact and utilize the specified NTP servers.
vsr running config# vrf <vrf> ntp time-sources server <server>
<server> |
The host type represents either an unzoned IP address or a DNS domain name. |
version¶
Version number to put in outgoing NTP packets.
vsr running config# vrf <vrf> ntp time-sources server <server>
vsr running server <server># version <uint8>
- Default value
4
association-type¶
The desired association type for this NTP server.
vsr running config# vrf <vrf> ntp time-sources server <server>
vsr running server <server># association-type ASSOCIATION-TYPE
|
Description |
|---|---|
SERVER |
Use client association mode. This device will not provide synchronization to the configured NTP server. |
PEER |
Use symmetric active association mode. This device may provide synchronization to the configured NTP server. |
POOL |
Use client association mode with one or more of the NTP servers found by DNS resolution of the domain name given by the ‘address’ leaf. This device will not provide synchronization to the servers. |
- Default value
SERVER
iburst¶
Indicates whether this server should enable burst synchronization or not.
vsr running config# vrf <vrf> ntp time-sources server <server>
vsr running server <server># iburst true|false
- Default value
false
prefer¶
Indicates whether this server should be preferred or not.
vsr running config# vrf <vrf> ntp time-sources server <server>
vsr running server <server># prefer true|false
- Default value
false
auth-key-id¶
Integer identifier used by the client and server to designate a secret key. The client and server must use the same key id.
vsr running config# vrf <vrf> ntp time-sources server <server>
vsr running server <server># auth-key-id <leafref>
stratum (state only)¶
Indicates the level of the server in the NTP hierarchy. As stratum number increases, the accuracy is degraded. Primary servers are stratum while a maximum value of 16 indicates unsynchronized. The values have the following specific semantics: | 0 | unspecified or invalid | 1 | primary server (e.g., equipped with a GPS receiver) | 2-15 | secondary server (via NTP) | 16 | unsynchronized | 17-255 | reserved.
vsr> show state vrf <vrf> ntp time-sources server <server> stratum
root-delay (state only)¶
The round-trip delay to the server, in milliseconds.
vsr> show state vrf <vrf> ntp time-sources server <server> root-delay
root-dispersion (state only)¶
Dispersion (epsilon) represents the maximum error inherent in the measurement.
vsr> show state vrf <vrf> ntp time-sources server <server> root-dispersion
offset (state only)¶
Estimate of the current time offset from the peer. This is the time difference between the local and reference clock.
vsr> show state vrf <vrf> ntp time-sources server <server> offset
poll-interval (state only)¶
Polling interval of the peer.
vsr> show state vrf <vrf> ntp time-sources server <server> poll-interval
synchronized (state only)¶
True if we are synchronized with this server.
vsr> show state vrf <vrf> ntp time-sources server <server> synchronized
state (state only)¶
The server status in the clock selection process.
vsr> show state vrf <vrf> ntp time-sources server <server> state