METHOD OF PREVENTING FRAGMENTATION OF TCP/IP PACKETS WHEN USING VPLS IN A PACKET SWITCHED NETWORK Russian patent published in 2019 - IPC H04L29/12 H04W8/02 H04L12/70 

FIELD: information technology.

SUBSTANCE: invention relates to digital data networks with packet switching (IP). Network includes client networks (CN), each of which contains client computers (CC) and boundary router (BR); an external network connecting all BRs based on VPLS technology, wherein each BR has an external interface associated with the external network and having a set value of the maximum size of the payload of one packet that may be transmitted by the protocol without fragmentation (MTU); has internal interface associated with its CN and having MTU set value; comprises a processing means configured to: compare IP addresses contained in request frames; modifying a request frame by changing data. As a result of using this method, a TCP connection is established with a maximum MSS size value, which enables to transmit packets without fragmentation, wherein delays when processing packets are minimized and load on VPLS service is reduced, available transmission channel is fully used, and in automatic calculation of maximum size of MSS, no additional settings are required.

EFFECT: high throughput in a packet switched network.

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