> - Downloads
> - Configuring NTP on a C Series Controller
> - Related Topics
> - NTP Support on C Series Controllers
> - Configuration Statements for NTP on C Series Controllers
> - Verifying NTP Configuration on a C Series Controller

> # Configuring NTP on a C Series Controller

> To configure NTP on a C Series Controller:

> 1. (Recommended) Configure NTP to automatically set the time when it starts.
>    - See Specifying Which NTP Server a C Series Controller Contacts on Startup .
>    - See Specifying a Basic NTP Configuration on a C Series Controller (C-Web Interface).
> 2. Specify the time source and the manner in which time is synchronized between systems on the network. Configure NTP to operate in one or more of the following modes:
>    - Client mode:
>      - See Configuring NTP Client Mode for a C Series Controller (SRC CLI) .
>      - See Configuring NTP Client Mode for a C Series Controller (C-Web Interface).
>    - Symmetric active (peer) mode:
>      - See Configuring an NTP Peer on a C Series Controller (SRC CLI) .
>      - See Configuring an NTP Peer for a C Series Controller (C-Web Interface).
>    - Broadcast mode:
>      - See Configuring NTP Broadcast Mode on a C Series Controller (SRC CLI) .
>      - See Configuring NTP Broadcast Mode on a C Series Controller (C-Web Interface).
> 3. (Recommended) Configure NTP authentication.
>    - SeeSpecifying an Authentication Key for NTP on C Series Controllers (C-Web Interface).
>    - See Configuring NTP Authentication (C-Web Interface).
> 4. (Optional) Configure NTP to listen for broadcast messages.
>    - See Configuring NTP as a Broadcast Client on a C Series Controller (SRC CLI) .
>    - See Specifying a Basic NTP Configuration on a C Series Controller (C-Web Interface).
> 5. (Optional) Configure NTP to listen for multicast messages.
>    - See Configuring NTP as a Multicast Client on a C Series Controller (SRC CLI) .
>    - SeeConfiguring NTP as a Multicast Client on a C Series Controller (C-Web Interface).

> #### Published: 2009-09-25

> Copyright © 2009, Juniper Networks, Inc. All rights reserved. Trademark Notice.