Wol magic packet sender command line3/1/2024 In many deployments with NAC the port has a default VLAN and the correct VLAN is assigned by NAC when the PC authenticates. This will only work if the port is in the VLAN the WoL packet is send in. The probe delay was added in ArubaOS (switching) Version so upgrade. In conjunction with NAC this has worked well for me: Nothing to do with WoL, but when using client-tracking, be sure to also use probe-delay, with NAC, or it tends to confuse Windows PCs when renewing DHCP leases, and can cause BAD-ADDRESS entries in you Windows DHCP server, and duplicate IP messages on PCs. Since a broadcast packet is sent out all ports (in that VLAN) it will also be forwarded out the ports with "controlled-direction in" enable, thus waking the PC it is destine.Īs for client-tracking, that will not be of any use, even if it hasn't expired, because there is no MAC in the forwarding table. WoL, to the Ethernet card that it can wake the computer, yet ingress traffic, not that there should be any for a in lower power mode.Ī WoL packet has a destination MAC of FF:FF:FF:FF:FF:FF (broadcast) because the PC trying to woke doesn't have a MAC in the switches forwarding table. The beauty of controlled-direction in is that it allows traffic to egress from the port, i.e. This same event will clear whatever MAC was on the port from the switch. Yes, when the PC goes to sleep, the port will deauth when the NIC changes to 10/half, for power saving. The engineer I worked with said he would request documentation update to mention it.Īaa port-access 1/1 controlled-direction in Note: The need for admin-edge in conjunction with “ controlled-direction in”, if STP is enabled, is not in the command reference documentation. If a loop is created, one of the ports will begin blocking, protecting the network. If you are concerned about STP protection, when STP is detected on a admin-edge port, it will fail back to full STP mode, while connected. It allows the port for begin forwarding a few seconds more quickly. In reality STP admin-edge is a good thing. When everything is set correctly, on an unauthenticated port you should see in the log this succession of events:Ġ0435 ports: port 16 is Blocked by STP <- STP kicks in after AAA, therefore trumping it.Ġ0076 ports: port 16 is now on-line <- Admin Edge allowing the port to forward (config)# spanning-tree 1/1 admin-edge-port What I discovered, and shared with support, is for a port to be allowed to forward, when blocked by AAA, the port must be set to STP admin-edge. Here is the part that is not in the ArubaOS-Switch Guide, if you are running spanning-tree, it takes precidence and will block traffic despite the “ controlled-direction in” command. When the WoL packet is sent from the WoL server to 10.0.1.255, the core SVI 50 will route the packet out to SVI 1, thanks to the ip directed-broadcast command. When the device goes to sleep, the port is de-authorized, the Ethernet port is change to the default untagged VLAN 1, serviced by the core routing device with a SVI of 10.0.1.1. SVI- Service Virtual Interface (Fancy talk for a Layer-3 VLAN) When a device is authorized, it is put in VLAN 100 services by the core routing device with a SVI of 10.0.100.1. The interface untagged must a VLAN serviced by a routing instance. This feature is notorious for being exploited for LAN DOS attacks, therefore I highly recommend setting the optional access list, to only allow WoL from a trusted source. Note: ip directed-broadcast globally activates broadcast forwarding/routing between all VLANs. For Layer-3 Distribution and Access switches, it will do nothing. IP directed-broadcast is only required on the switch performing Layer-3 routing. This allows traffic from the switch to egress the port, so the sleeping computer NIC may process packets. aaa port-access 1/1 controlled-direction in On the switch, you will need to configure the port for controlled-direction in (Window) Enable Allow this device to wake the computer under the Ethernet Connection Properties, Power Management tab.Īruba AOS aka HPE Proview/Provision switching running version 16.x or newer (I can't confirm WoL on older versions) Some Requirements (just stating the obvious) I will attempt to summarized all that has been said, and needs and some added things done to get WoL working. When I first began working on WoL, I read this post thread, much like many will read as time goes on, and yet I still could not get WoL to work, but eventually I did.
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