Method for simultaneously operating at least two tunnels on at least a network
OwnerVladimir Ksinant, Jeasn-Mickael Guerininventors
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Abstract
The invention concerns a method for simultaneously operating at least two tunnels on at least a network. It includes, at the intermediate node, a sequence comprising retrieving all the tunnel headers (step E8) and, if required, reassembling the original packet from its fragments (step E7), processing operations corresponding to one or more functions, performed on the original packet (step E3), optionally fragmenting once more the packet which have been processed (step E11) and restoring the headers of the tunnels (step E14).
Claims11
A method for the simultaneous operation of at least two tunnels in at least one network, on which the data are transmitted by a host station in the form of packets obeying a first protocol and enclosed within packets created under at least one second protocol,
- characterised in that it comprises, at the level of the intermediate node, an operating sequence which comprises the following steps;
- extraction of the tunnel headers so as to achieve a de-encapsulation of the original packet and, if necessary, reassembly of the original packet from its fragments in the case of an original packet which has been subjected to fragmentation,
- processing which corresponds to one or more functions performed on the original packet,
- re-fragmentation, where appropriate, of the packet which has undergone processing and restoration of tunnel headers.
A method according to the previous claims,
- characterised in that it is recursive, and that it applies not only to the intermediate nodes of the network but also to the host station, the source of the packet.
A method according to the previous claims,
- characterised in that the aforementioned processing consists of the creation of new tunnels, and/or of operations concerning the differentiation of packets in order to ensure the quality of service.
A method according to the previous claims,
- characterised in that it comprises an operational cycle which comprises the following steps:
- a first analysis step to determine whether or not the packet received by the network module is a fragment,
- a second detection step to determine whether or not the packet is a fragment, in the case of an unfragmented packet.
- a third processing step in the event that the packet is not a tunnel.
Dependencies are inferred from the claim text.