Repeated WAN Interface Drops at Fixed Intervals

Hello,

I’m experiencing consistent WAN connectivity drops that appear to follow a timed interval pattern, and I’m requesting escalation to a network or infrastructure-level technician for further investigation.

Summary of the issue:

• My connection drops at predictable intervals (previously around :11 and :41 past the hour, now around :20 past the hour after a support call earlier today).
• During each event, my router logs show a WAN interface (ethwan) link down, followed by reinitialization and reconnection.
• These are full link drops, not intermittent latency or packet loss.

Relevant observations:

• Disconnects occur approximately every 20–30 minutes.
• The timing pattern shifted after I was on the phone with support between 18:11–18:32, suggesting the underlying lease/session timer may have been reset or reprovisioned.
• This behavior is consistent with a short DHCP lease, forced renewal, or periodic session reset rather than a local network issue.

Request:
Can you please investigate the following on your end:

1. The current DHCP lease time assigned to my connection
2. Whether there are any forced session resets, reauthentication intervals, or CMTS-side policies affecting my line
3. Any recent provisioning changes or config updates applied during or after my support call
4. Whether my connection is experiencing signal instability or re-registration events that would trigger WAN renegotiation

If possible, I’d like confirmation of:

• My lease duration (in seconds)
• Whether my modem/router is being forced to renew or reconnect at regular intervals
• Any logs on your side that correlate with these disconnect times

This issue is causing repeated drops in real-time applications (e.g., multiplayer gaming), and the consistent timing strongly suggests a network-side configuration or lease behavior.

Please escalate this to an engineer or technician who can review DHCP/session handling and line stability.