Abstract: The present invention relates to a method and system for pre-loading access nodes with the location of more frequently requested resources. The method includes declaring each locally supported communication protocol for participating to control message exchanges between nodes supporting a same communication protocol; receiving a message to locate a target resource; searching for information related to the location of the target resource in the Local Directory Database; broadcasting an undirected message to the other access nodes in the network to locate the target resource; receiving a control message from the destination access node providing access to the target resource, this control message comprising information related to the location of the target resource; and storing the information related to the location of the target resource in the Local Directory Database.

Abstract: A method and a system for framing variable-length packets in a data communications system are disclosed. The successive variable-length packets carrying users' data, are formed in a stream of chained packets comprising a header. Two CRC's are computed. One over the data and another one over the header however, including also the data CRC of the immediate previous packet, thus chaining successive packets in a steam of such packets. The invention also assumes that encryption is performed independently over header and corresponding CRC's and, on the other hand, over the data of current packet. The invention allows to better adapt the transportation of multi-media users' data in packets of variable-lengths while securing transport by chaining successive packets, thus preventing that accidental or malicious deletion and insertion of packets occur and remain undetected.