Systems and methods of detecting and assigning IP addresses to devices with ARP requests
A method of discovering and assigning an IP address to a device to be discovered in a communication network having multiple interconnected nodes includes continuously monitoring, by the device to be discovered, the network for address resolution protocol (ARP) requests. The discoverer node transmits a number of ARP request to the network. The device to be discovered receives the number of ARP requests. The device to be discovered determines whether the number of ARP requests are unanswered by other devices in the network. The device to be discovered answers to the number of ARP requests with an ARP reply to claim an IP address associated with the number of ARP requests. The discoverer node and the device to be discovered exchange a pair of User Datagram Protocol (UDP) packets to complete the detection process.
1. A method of discovering and assigning an IP address to a device to be discovered in a communication network having multiple interconnected nodes, the method comprising:
selecting, by a discoverer node, a first IP address for the assigning to the device to be discovered;
continuously monitoring, by the device to be discovered, the network for address resolution protocol (ARP) requests;
transmitting, by the discoverer node to the network, a plurality of ARP requests associated with the selected first IP address;
receiving, by the device to be discovered, the plurality of ARP requests;
determining, by the device to be discovered, whether the plurality of ARP requests are unanswered by other devices in the network;
answering, by the device to be discovered, the plurality of ARP Requests with an ARP reply to claim the selected first IP address associated with the plurality of ARP Requests; and
exchanging a pair of User Datagram Protocol (UDP) packets between the discoverer node and the device to be discovered.
2. The method of claim 1 , wherein the device to be discovered incorporates a field programmable gate array (FPGA).
3. The method of claim 1 , wherein the UDP packets are marked with a proprietary identifier.
4. The method of claim 3 , wherein the device to be discovered filters the UDP packets.
5. The method of claim 1 , further comprising transmitting, by the discoverer node, the plurality of ARPs to the device to be discovered until an ARP reply from the device to be discovered is received by the discoverer node.
6. The method of claim 5 , wherein the plurality of ARP requests that are transmitted by the discoverer node is determined based on configuration of the discoverer node and/or the device to be discovered.
7. The method of claim 5 , wherein the discoverer node sends the plurality of ARP requests based on predetermined criteria selected from predetermined time intervals.
8. The method of claim 1 , further comprising continuously monitoring, by the discoverer node, for any ARP requests with the same IP address as the selected first IP address from other devices to be discovered within the network.
9. The method of claim 8 , further comprising selecting, by the discoverer node, a second IP address when an ARP request with the same IP address is detected.
10. The method of claim 1 , wherein the exchanging the pair of UDP packets includes transmission of a trusted UDP packet by the discoverer node to the device to be discovered.
11. The method of claim 10 , wherein a trusted UDP packet is addressed to a uniquely assigned UDP port.
12. The method of claim 10 , wherein a trusted UDP packet is encrypted.
13. The method of claim 10 , wherein a trusted UDP packet includes information to be used by device to be discovered, the information including permanent or temporary configuration details, operation parameters or settings and control commands.
14. The method of claim 1 where the exchanging the pair of UDP packets includes the transmission of a trusted UDP reply by the device to be discovered to the discoverer node.
15. The method of claim 14 , wherein a trusted UDP reply is addressed to a uniquely assigned UDP port.
16. The method of claim 14 , wherein a trusted UDP reply is encrypted.
17. The method of claim 14 , wherein a trusted UDP reply includes information about the device to be discovered.
18. The method of claim 1 , wherein the selecting of the first IP address is performed based on one or more specific capabilities.
19. The method of claim 1 , wherein the selecting of the first IP address is performed based on an availability of the first IP address.
20. A system for discovering and assigning an IP address to a device to be discovered in a communication network having multiple interconnected nodes, the system comprising:
a discoverer node coupled to a first processor to select the IP address for the assigning to the device to be discovered;
transmit a plurality of Address Resolution Protocol (ARP) requests associated with the selected IP address to the network; and
the device to be discovered coupled to a second processor, wherein the device to be discovered continuously monitors the network for ARP requests, receives the plurality of ARP requests from the discoverer node and determines whether the plurality of ARP requests are unanswered by other devices in the network;
wherein the device to be discovered answers the plurality of ARP requests with an ARP reply to claim the selected IP address associated with the number of ARP requests and wherein the discoverer node and the device to be discovered exchange a pair of User Datagram Protocol (UDP) packets.