N Commands
This chapter describes the system management commands that begin with N.
ntp
To configure the Network Time Protocol (NTP) peers and servers for the switch, use the ntp command. To remove configured peers and servers, use the no form of this command.
ntp { peer hostname | server hostname } [ prefer ] [ use-vrf vrf-name ]
no ntp { peer hostname | server hostname }
Syntax Description
(Optional) Specifies this peer/server as the preferred peer/server. |
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(Optional) Specifies the virtual routing and forwarding (VRF) used to reach this peer/server. |
Command Default
Command Modes
Command History
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The keyword use-vrf replaces the keyword vrf. The keyword vrf is retained for backwards compatibility. |
Usage Guidelines
Examples
This example shows how to form a server association with a server:
This example shows how to form a peer association with a peer:
This example shows how to delete an association with a peer:
Related Commands
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ntp abort
To discard the Network Time Protocol (NTP) Cisco Fabric Services (CFS) distribution session in progress, use the ntp abort command.
Syntax Description
Command Default
Command Modes
Command History
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Examples
This example shows how to discard the NTP CFS distribution session in progress:
Related Commands
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ntp authenticate
To enable Network Time Protocol (NTP) authentication, use the ntp authenticate command. To disable NTP authentication, use the no form of this command.
Syntax Description
Command Default
Command Modes
Command History
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Usage Guidelines
Examples
This example shows how to enable NTP authentication:
This example shows how to disable NTP authentication:
Related Commands
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ntp commit
To apply the pending configuration pertaining to the Network Time Protocol (NTP) Cisco Fabric Services (CFS) distribution session in progress in the fabric, use the ntp commit command.
Syntax Description
Command Default
Command Modes
Command History
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Examples
This example shows how to commit changes to the active NTP configuration:
Related Commands
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ntp distribute
To enable Cisco Fabric Services (CFS) distribution for Network Time Protocol (NTP), use the ntp distribute command. To disable this feature, use the no form of this command.
Syntax Description
Command Default
Command Modes
Command History
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Usage Guidelines
Before distributing the Fibre Channel timer changes to the fabric, the temporary changes to the configuration must be committed to the active configuration using the ntp commit command.
Examples
This example shows how to distribute the active NTP configuration to the fabric:
Related Commands
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Commits the NTP configuration changes to the active configuration. |
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ntp sync-retry
To retry synchronization with the configured Network Time Protocol (NTP) servers, use the ntp sync-retry command.
Syntax Description
Command Default
Command Modes
Command History
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Examples
This example shows how to retry synchronization with the configured NTP servers:
Related Commands
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