NTP100 pauses periodically on the network

Symptoms

• The NTP100 periodically hesitates or becomes temporarily unreachable on the network.
• Device may periodically reboot.

Possible causes

• DHCP is enabled, but no DHCP server is available.
• The device automatically reboots to reset its internal network controller, attempting to resolve any failed communication with the DHCP server.
• DNS is missing or unreachable.
• Fallback addressing or a duplicate IP address accompanies periodic soft restarts.

Troubleshooting steps

1. If DHCP is enabled, confirm that a DHCP server is available on the LAN. Restore DHCP service or configure a static IP address appropriate for the network.
2. Configure at least one valid, reachable DNS server.
3. If periodic soft restarts occur, check for a 169.254.x.x fallback address and duplicate IP addresses.

Related articles

• Understanding Fallback IP Addresses (169.254.x.x)
• Device Intermittently Disappears or Changes IP Address
• NTP stops serving time when reference is lost