Troubleshoot DHCP

Article under construction currently. Below you will find notes that are being collected to eventually organize into a nice article.

= Failed to get an IP via DHCP! = Sending discover… actually means that a network interface was found and try to get an IP for it via DHCP. So it could be:


 * Layer 1 issue like cable (you already checked that)
 * Spanning tree issue (make sure you have RSTP or configured “port fast”)
 * Auto-negotiation issue (try configuring static speed instead of auto-negotiation for that port)
 * Ethernet energy saving (see if your switch has EEE/802.3az feature and disable if possible)

Reference: https://forums.fogproject.org/topic/7159/failed-to-get-an-ip-via-dhcp?page=1