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).

Related Topics

• NTP Support on C Series Controllers
• Configuration Statements for NTP on C Series Controllers
• Verifying NTP Configuration on a C Series Controller

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