METHODS FOR EXCHANGING NETWORK MANAGEMENT MESSAGES USING UDP OVER HTTP PROTOCOL

摘要

A network access device (NAD) receives a UDP packet from a client to be transmitted to a management server over Internet, the UDP packet including a management message. The NAD is one of NADs managed by the management server. The NAD determines whether the management server is reachable using a UDP protocol. The NAD transmits the UDP packet to the management server using the UDP protocol over the Internet if it is determined that the management server is reachable using the UDP protocol. Otherwise, the NAD extracts a UDP payload from the UDP packet, encapsulates the UDP payload within an HTTP POST request, and transmits the HTTP POST request having the UDP payload encapsulated therein to the management server using a HTTP protocol over the Internet.

主权项

1. A computer-implemented method, comprising:
periodically sending, from a network access device, a ping or hello message to a management server; determining whether a response to the ping or hello message is received from the management server within a predetermined period of time; determining, at the network access device, whether the management server is reachable using a UDP protocol based at least upon the response to the ping or hello message; receiving, at the network access device, a user datagram protocol (UDP) packet from a client to be transmitted to the management server over a network, wherein the network access device is one of a plurality of network access devices managed by the management server over the network; determining that the management server is unreachable using the UDP protocol; extracting a UDP payload from the UDP packet; encapsulating the UDP payload within a first hypertext transfer protocol (HTTP) POST request; and transmitting the first HTTP POST request to the management server using a HTTP protocol over the network, the HTTP POST request comprising the UDP payload