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adiberr/edgerouter-pppoe-reconnect.md

Last active December 6, 2025 22:34
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EdgeRouter: Auto-Reconnect PPPoE Before DHCP Lease Expires
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edgerouter-pppoe-reconnect.md

My ISP provides a dynamic IP with a DHCP lease that expires roughly 24 hours after the last reboot. When it expires, PPPoE renegotiation sometimes takes too long and I end up rebooting the router or SSH'ing in to clear the session.
This scheduler forces a clean reconnect at a fixed time so the renewal happens on my terms.

Configuration

configure

set system task-scheduler task reconnect-pppoe crontab-spec "0 6 * * *"
set system task-scheduler task reconnect-pppoe executable path "/opt/vyatta/bin/vyatta-op-cmd-wrapper"
set system task-scheduler task reconnect-pppoe executable arguments "clear interfaces connection pppoe0"

commit
save
exit

What It Does

  • Runs daily at 06:00.
  • Clears the pppoe0 session using the VyOS wrapper (executes shell commands without separate scripts).
  • Forces a fresh PPPoE negotiation.

Schedule Options

Modify 0 6 * * * cron expression as needed (cron generator):

  • 0 4 * * * — 4 AM daily
  • 0 */12 * * * — Every 12 hours
  • 0 3 * * 0 — Sundays at 3 AM

Tags: EdgeRouter, PPPoE, dynamic IP, ISP lease, DHCP renewal, cron, task scheduler, WAN reset, network automation

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