Patent EP0781010A2 successfully refreshed from Google Patents.
EP0781010A2
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EP
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Network node apparatus and connection set-up method for setting up cut-through connection
Assignee: Toshiba Corp
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Filing: 1996-12-16
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Granted: —
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Expires: 2016-12-16
Abstract
Abstract A set-up scheme for a cut-through connection in a network system capable of realizing a high throughput, low latency internetwork communication efficiently under an internet environment. A network node checks source/destination information of the transport layer and/or a source/destination information of the network layer of a received packet, and if the checked information satisfies a prescribed condition, determines the packet to be a trigger. Then, the network node instructs another node capable of initiating a set-up operation, which may be the network node itself, to initiate the set-up of the cut-through connection for traffic corresponding to the trigger packet.
Inventors
- 👤 Tatsuya Jimmei
- 👤 Shigeo Matsuzawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 07:01
CPC Classifications
H; H04; H04L; H04L45/00; H04L45/02; H04L45/10; H04L45/40; H04L49/00; H04L49/25; H04L49/251; H04Q; H04Q11/00; H04Q11/04; H04Q11/0428; H04Q11/0478; H04L12/00; H04L12/54; H04L12/56; H04L12/5601; H04L2012/5619; H04L2012/5638; H04L49/30; H04L49/3009; H04L49/60; H04L49/602
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
126 words
A method for setting up a cut-through connection through which packets from a source node belonging to a logical network to a destination node belonging to another logical network are transferred, bypassing network-layer processing at at least one boundary between logical networks, comprising the steps of: receiving a packet from the source node to the destination node or a packet from the destination node to the source node; detecting the received packet to be a trigger according to at least one of source information and destination information of a layer higher than the network layer included in the received packet; and instructing, in response to the detecting step, a node capable of initiating a set-up operation to initiate the set-up operation to establish the cut-through connection.
Claim 2
Dependent Claim
45 words
The method according to claim 1, wherein the detecting step includes examining information included in a source port field and/or a destination port field of a transport-layer header respectively as the source information and/or the destination information of the layer higher than the network layer.
Claim 3
Dependent Claim
46 words
The method according to claim 1, wherein the detecting step includes examining information for identifying a protocol whose layer is higher than a transport layer used in the received packet as the source information and/or the destination information of the layer higher than the network layer.
Claim 4
Dependent Claim
44 words
The method according to claim 1, wherein the detecting step includes examining information included in a data field of the layer higher than the network layer for detecting the packet to be a trigger in addition to the source information and/or the destination information.
Claim 5
Dependent Claim
43 words
The method according to claim 1, wherein the detecting step includes checking a protocol whose layer is a transport layer used in the received packet for detecting the packet to be a trigger in addition to the source information and/or the destination information.
Claim 6
Dependent Claim
32 words
The method according to claim 1, wherein the detecting step further comprises the step of: checking whether a cut-through connection corresponding to the received packet has already been set up or not.
Claim 7
Dependent Claim
27 words
The method according to claim 1, further comprising the step of: transmitting the received packet through a default connection toward the destination node or the source node.
Claim 8
Dependent Claim
38 words
The method according to claim 1, further comprising the steps of: buffering the received packet from the source node to the destination node until the cut-through connection becomes useable; and transmitting the received packet through the cut-through connection.
Claim 9
Dependent Claim
34 words
The method according to claim 1, wherein in the receiving step, a receiving node receives the packet from one of the source node, the destination node, or an upper layer of the receiving node.
Claim 10
Dependent Claim
20 words
The method according to claim 1, wherein the instructing step occurs in the node capable of initiating the set-up operation.
Claim 11
Dependent Claim
24 words
The method according to claim 1, wherein the instructing step occurs in a node different from the node capable of initiating the set-up operation.
Claim 12
Dependent Claim
47 words
The method according to claim 1, wherein the instructing step includes instructing the node capable of initiating the set-up operation to send a set-up initiation message to a node located at a boundary between logical networks and neighboring on the node capable of initiating the set-up operation.
Claim 13
Dependent Claim
41 words
The method according to claim 12, wherein the set-up initiation message includes information to be used by the neighboring node for registering a correspondence relationship between a datalink connection in a logical network and another datalink connection in another logical network.
Claim 14
Dependent Claim
43 words
The method according to claim 1, wherein the instructing step includes instructing the node capable of initiating the set-up operation to send a set-up initiation message to a server which is capable of returning information to be used for establishing the cut-through connection.
Claim 15
Dependent Claim
36 words
The method according to claim 1, wherein the detecting step includes detecting the packet to be a trigger so that the statistical use rate of the cut-through connection to be established may exceed a predetermined rate.
Claim 16
Independent Claim
122 words
A method for setting up a cut-through connection through which packets from a source node belonging to a logical network to a destination node belonging to another logical network are transferred, bypassing network-layer processing at at least one boundary between logical networks, comprising the steps of: receiving a packet from the source node to the destination node or a packet from the destination node to the source node; detecting the received packet to be a trigger according to at least one of source information and destination information of the network layer included in the received packet; and instructing, in response to the detecting step, a node capable of initiating a set-up operation to initiate the set-up operation to establish the cut-through connection.
Claim 17
Dependent Claim
66 words
The method according to claim 16, further comprising the step of: storing at least one address of a specified source node or a specified destination node; and wherein the detecting step detects the packet to be a trigger in case where at least one of the source information and the destination information is recognized to be in conformance with the address stored at the storing step.
Claim 18
Dependent Claim
42 words
The method according to claim 16, wherein the detecting step also uses at least one of source information and destination information of a layer higher than the network layer included in the received packet for detecting the packet to be a trigger.
Claim 19
Dependent Claim
151 words
A network node apparatus, comprising; reception means for receiving a packet from a source node belonging to at least one logical network or an upper layer of the network node to a destination node belonging to another logical network; detection means for detecting the packet received by the reception means to be a trigger according to at least one of source information and destination information of a network layer and/or a layer higher than the network layer included in the packet received; set-up means for initiating, when the detection means detects the trigger, a set-up operation to establish a cut-through connection through which packets from the source node to the destination node are transferred, bypassing network-layer processing at at least one boundary between logical networks; and transmission means for transmitting packets destined to the destination node through the cut-through connection established according to the set-up operation initiated by the set-up means.
Claim 20
Dependent Claim
151 words
A network node apparatus, comprising; reception means for receiving a packet from a destination node belonging to at least one logical network to a source node belonging to another logical network or an upper layer of the network node; detection means for detecting the packet received by the reception means to be a trigger according to at least one of source information and destination information of a network layer and/or a layer higher than the network layer included in the packet received; set-up means for initiating, when the detection means detects the trigger, a set-up operation to establish a cut-through connection through which packets from the source node to the destination node are transferred, bypassing network-layer processing at at least one boundary between logical networks; and transmission means for transmitting packets destined to the destination node through the cut-through connection established according to the set-up operation initiated by the set-up means.
Claim 21
Dependent Claim
149 words
A network node apparatus, comprising; first reception means for receiving a packet from a destination node belonging to at least one logical network or an upper layer of the network node to a source node belonging to another logical network; detection means for detecting the packet received by the first reception means to be a trigger according to at least one of source information and destination information of a network layer and/or a layer higher than the network layer included in the packet received: instruction means for instructing, when the detection means detects the trigger, a node capable of initiating a set-up operation to initiate the set-up operation to establish a cut-through connection through which packets from the source node to the destination node are transferred, bypassing network-layer processing at at least one boundary between logical networks; and second reception means for receiving packets transferred through the cut-through connection.
Claim 22
Dependent Claim
149 words
A network node apparatus, comprising; first reception means for receiving a packet from a source node belonging to at least one logical network to a destination node belonging to another logical network or an upper layer of the network node; detection means for detecting the packet received by the first reception means to be a trigger according to at least one of source information and destination information of a network layer and/or a layer higher than the network layer included in the packet received; instruction means for instructing, when the detection means detects the trigger, a node capable of initiating a set-up operation to initiate the set-up operation to establish a cut-through connection through which packets from the source node to the destination node are transferred, bypassing network-layer processing at at least one boundary between logical networks; and second reception means for receiving packets transferred through the cut-through connection.
References Cited (Backward Citations)
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