WO2015167068A1 - Procédé permettant de réduire le trafic réseau par verrouillage de port - Google Patents

Procédé permettant de réduire le trafic réseau par verrouillage de port Download PDF

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Publication number
WO2015167068A1
WO2015167068A1 PCT/KR2014/004958 KR2014004958W WO2015167068A1 WO 2015167068 A1 WO2015167068 A1 WO 2015167068A1 KR 2014004958 W KR2014004958 W KR 2014004958W WO 2015167068 A1 WO2015167068 A1 WO 2015167068A1
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quadbox
frame
node
ring
danh
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PCT/KR2014/004958
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English (en)
Korean (ko)
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이종명
라이드 압둘살람이브라함
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명지대학교 산학협력단
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Publication of WO2015167068A1 publication Critical patent/WO2015167068A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/42—Loop networks

Definitions

  • the present invention relates to a method for reducing traffic in various structures of a network, particularly a method for reducing traffic in an Ethernet network using a high availability seamless redundancy (HSR) standard of a connected ring topology.
  • the present invention relates to a method for reducing network traffic that can improve the performance of an HSR network by locking an interface of a box node (Doubly Attached Node for HSR) side to a frame that does not include a destination node in a corresponding DANH ring.
  • the network traffic reduction method can control the node to receive only one copy of the frame, thereby eliminating unnecessary transmission and reception of the frame copy, thereby reducing the traffic compared to the previous network system.
  • the network traffic reduction method according to the prior art has a limitation that the traffic can be reduced only for a network that forwards the frame copy by broadcasting or multicasting.
  • the present invention provides a network traffic reduction method that reduces traffic and improves performance of an HSR network by locking a DANH ring that does not include a destination node and a quadbox ring that does not point to a destination node in a network using the HSR standard of the connected ring topology. It is.
  • the network traffic reduction method using a port lock is connected to the DANH ring quad box node does not include the destination node of the frame transmitted on the connected ring topology network And a first learning step of locking the port on the side of the DANH to the frame, and an execution step of sending a copy of the frame to the destination node along a path through the unlocked port.
  • the frame received by the quadbox node It stores the sequence number and MAC address of the destination node included in the.
  • the DANH ring connected to the side of the DANH receives the received frame. It is characterized in that it does not include the destination node of the frame.
  • the quadbox node determines that the DANH ring connected to the DANH side does not include the destination of the received frame, discarding the received frame. It features.
  • the quadbox node determines whether the destination of the frame received by the DANH ring connected to the DANH side is determined. Characterized in that.
  • the quadbox node forwards the received frame.
  • a second port for locking a side port connected to a quadbox ring which is not overlapped with a path to a destination node of the frame, with respect to the frame It further comprises a learning step.
  • the quadbox node determines that the connection to the DANH ring does not include a destination node in the first learning step, forwards the frame only to the quadbox side.
  • the frame is forwarded only to the DANH side.
  • the predetermined number of times is set in advance based on the number of quad box rings included in the network.
  • the performance of the network can be improved by reducing traffic generation in the HSR network of the connected ring topology.
  • FIG. 1 is a diagram illustrating a DANH side and a quad box side of a quad box node according to an exemplary embodiment of the present invention.
  • FIG. 2 is a diagram illustrating an example of an HSR network of a connected ring topology according to an embodiment of the present invention.
  • FIG. 3 is a diagram illustrating a state in which some rings are locked in an example of an HSR network of a connected ring topology according to an embodiment of the present invention.
  • FIG. 4 is a flowchart illustrating an operation of a quadbox node in a first learning step of a method for reducing network traffic using a port lock according to an embodiment of the present invention.
  • FIG. 5 is a diagram illustrating an example of an HSR network of a connected ring topology having a plurality of quadbox rings according to an embodiment of the present invention.
  • FIG. 6 is a graph comparing traffic generated according to the number of DANH rings in a case of applying a network traffic reduction method using a port lock and a case of using a standard HSR protocol according to an embodiment of the present invention.
  • FIG. 7 is a graph comparing traffic generated according to the number of quadbox rings for a network traffic reduction method using a port lock and a standard HSR protocol according to an embodiment of the present invention.
  • FIG. 8 is a graph showing the reduction rate of the traffic compared to the standard HSR protocol according to the number of DANH rings when the network traffic reduction method using the port lock according to an embodiment of the present invention is applied.
  • FIG. 9 is a graph illustrating a reduction rate of traffic compared to the standard HSR protocol according to the number of quadbox rings when the network traffic reduction method using the port lock according to an embodiment of the present invention is applied.
  • FIG. 10 compares the traffic generated according to the number of quadbox rings when the network traffic reduction method using the standard HSR protocol, the port lock on the DANH ring, and the port lock on the quadbox ring is applied according to an embodiment of the present invention.
  • Network traffic reduction method of the present invention relates to a method for reducing the traffic (traffic, load) of the network when transmitting and receiving a frame or frame copy (Frame Copy) in a variety of networks, in particular the traffic reduction when sending and receiving a frame copy Suggest a method.
  • various networks such as Ethernet may be used.
  • Frame copying is used for redundancy protocols, redundancy systems and the like.
  • redundancy of nodes that is, in the case of connecting the nodes through two channels
  • frame copies are transmitted in advance to the nodes via the channels.
  • the connection between the nodes can be quickly restored through another channel that does not fail. That is, the system can use frame copy to reduce channel recovery time between nodes.
  • the present invention can be applied to various networks, and in particular, to a high availability seamless redundancy (HSR) standard network.
  • HSR is a standard redundancy protocol standardized by the IEC62439-3 standard and is applied to redundant systems.
  • each node duplicates a frame and transmits the same frame through two ports to prepare for failure. Even if one channel fails, the duplicated frame is always transmitted to the other channel so that the failure recovery time is zero. can do.
  • the HSR network always duplicates each unicast frame transmitted in each Quadbox node type available within the network and randomly forwards these frames to the destination, thus allowing many frame copies to circulate on the network.
  • unicast traffic does not occur in the HSR protocol in a single ring topology. This is because each duplicated frame copy moves along two separate paths to the destination node, and the destination node only accepts the copy that arrives fastest and discards the rest.
  • each duplicated frame copy is also duplicated at each quadbox node, which can cause traffic congestion when multiple data streams are transmitted simultaneously.
  • the Port Locking scheme of the present invention improves the unicast traffic performance of the HSR protocol in a connected ring topology.
  • an embodiment of a network traffic reduction method using the port lock of the present invention will be described with reference to the accompanying drawings.
  • FIG. 1 is a diagram illustrating a DANH side and a quad box side of a quad box node according to an exemplary embodiment of the present invention.
  • the HSR network may include a DANH node and a quadbox node.
  • the DANH node which has two ports, functions as a terminal node of the network, and the quadbox node that has four ports serves to connect two different rings, with two in each ring.
  • the quadbox node's ports are connected.
  • the ports of quadbox nodes can be divided into two sides with two ports connected to the same ring as one side.
  • the ports of the quadbox nodes connecting the DANH ring and the quadbox ring may be divided into two sides.
  • the two ports connected to the DANH ring are called the DANH side
  • the two ports connected to the quadbox ring are called the quadbox side.
  • FIG. 2 is a diagram illustrating an example of an HSR network of a connected ring topology according to an embodiment of the present invention.
  • an example of a network of connected ring topologies is composed of first to fourth DANH rings 10-40 and quadbox rings 50.
  • the DANH ring is a ring composed of DANH nodes, and is connected to quad box rings and other DANH rings through quad box nodes.
  • the quadbox ring is a ring consisting of quadbox nodes and connects the DANH rings and other quadbox rings.
  • the standard HSR protocol uses the MAC address of the destination node B included in the destination field of the frame.
  • a sequence number is tagged and duplicated in an identification tag inside each frame, and each frame is distributed within an HSR network.
  • the destination node can accept the intended frame without forwarding it. If there is no destination node in the ring, the network may forward the frame.
  • a quadbox node forwards a frame to one port inside the DANH ring, and the frame returns through the other port to the same quadbox node, it can be assumed that the destination node is not inside the ring. In this case, the quadbox node locks the DANH side port of the quadbox node so that it does not transmit a frame destined for the destination node B's MAC address inside the DANH ring.
  • FIG. 3 is a diagram illustrating a state in which some rings are locked in an example of an HSR network of a connected ring topology according to an embodiment of the present invention.
  • the first DANH ring 10 and the second DANH ring 20 are locked, in which case the frames directed from the source node A to the destination node B are first and second DANH. It will not be delivered to the rings 10, 20.
  • the port locking technique applies only to the DAHN side of quadbox nodes connected by DAHN rings, and the quadbox side of quadbox nodes connected by DAHN rings is not locked.
  • Destination node B does not exist in quadbox ring 50. Therefore, a frame sent from a quadbox node to a DANH ring that does not include a destination node B is returned to the same quadbox node. If a port lock scheme is applied on the quadbox side, the quadbox ring will be locked, thus breaking the connection between the source node A and the destination node B.
  • the quad-box node the port of the side connected to the DANH ring that does not include the destination node of the frame transmitted on the connected ring topology network, the frame A first learning step that locks against and an execution step of sending a copy of the frame to a destination node along a path through an unlocked port.
  • FIG. 4 is a flowchart illustrating an operation of a quadbox node in a first learning step of a method for reducing network traffic using a port lock according to an embodiment of the present invention.
  • the quad box node receives the HSR frame (S110).
  • the quadbox node determines whether the received frame is a unicast frame (S120).
  • the quadbox node If the received frame is a unicast frame in step S120, the quadbox node reads the MAC address and sequence number of the destination node of the received frame (S130).
  • the standard HSR frame may include a MAC address of the destination node, a MAC address of the source node, an HSR identifier tag, a payload and a checksum, and a sequence number may be included in the HSR identifier tag.
  • the quadbox node determines whether the same frame has been previously received from the DANH side (S140). At this time, to determine whether the same frame has been received, the quadbox node may use the stored sequence number of the received frame and the MAC address of the destination node.
  • the quadbox node may be determined that the DANH ring connected to the DANH side does not include the destination of the received frame.
  • the quadbox node may determine whether the DANH ring connected to the DANH side includes the destination of the received frame.
  • step S140 If it is determined in step S140 that the same frame has been previously received, the quadbox node discards the frame, locks the port that received the frame with respect to the MAC address of the destination node (S150), and terminates the process.
  • the quadbox node has previously received the received frame from the DANH side, it is determined that the received frame is not included in the DANH ring, and the port receiving the received frame with respect to the destination MAC address of the received frame You can lock and discard the received frame.
  • step S140 If it is determined in step S140 that the same frame has not been received, the quadbox node stores the sequence number and the MAC address of the destination node (S160) and proceeds to step S170. That is, if the quadbox node has not previously received the frame received by the quadbox node on the DANH side, the quadbox node determines that the received frame may be included in the DANH ring, and the sequence number and destination included in the received frame are determined. Stores the MAC address of the node.
  • the quadbox node forwards the received frame (S170) and terminates the process.
  • step S120 If it is determined in step S120 that the received frame is not a unicast frame but a multicast or broadcast frame, the quadbox node also proceeds to step S170 to forward the received frame (S170) and terminates the process. .
  • the quadbox node may forward the received frame.
  • the quadbox node does not use the port lock scheme and uses the standard HSR protocol. You can use it as is to process frames.
  • each side of the quad node port is connected to the DANH ring that does not include the destination of the frame copy on the network. May send a unicast frame towards the destination node using the HSR protocol.
  • the method for reducing network traffic using port locking locks the DANH side of a quadbox node connecting a quadbox ring to a DANH ring not including a destination node. As a result, unicast traffic can be reduced.
  • the network traffic reduction method using a port lock may further comprise a second learning step.
  • the port on the side that connects to the quadbox ring that does not overlap the path to the destination node of the frame is the destination.
  • the port does not reach the node.
  • the traffic reduction performance can be further improved.
  • the connected ring topology network is composed of a DANH ring and a quadbox ring, and the DANH rings are connected through quadbox rings.
  • the DANH ring is connected to the quadbox ring by one quadbox node shared with the quadbox ring, and the quadbox rings may be connected to each other by quadbox nodes shared by each other.
  • FIG. 5 is a diagram illustrating an example of an HSR network of a connected ring topology having a plurality of quadbox rings according to an embodiment of the present invention.
  • a port of a quadbox node, eg, a third quadbox node 80, connected to a DANH ring not including a destination node B may be locked.
  • the frame copy transmitted from the source node A does not reach the locked DANH rings indicated by the lock in the example of FIG. 5.
  • the quadbox node with the port locked does not forward the frame destined for a specific destination node (B) into the DANH ring, and thus the quadbox ring including the quadbox node with the port locked. It may also not be directed to the destination node (B).
  • the quadbox rings marked with a lock do not forward the frame transmitted from the source node A to the destination node B.
  • the quadbox ring not directed to the destination node B does not overlap with the path to the destination node of the frame.
  • a quadbox ring is a ring composed of quadbox nodes.
  • the quadbox node may be classified into a node connecting the DANH ring and the quadbox ring, and a node connecting the quadbox ring and the quadbox ring, and the quadbox node connecting the quadbox ring and the DANH ring may be the first.
  • the quadbox node no longer forwards the frame to the DANH side connected to the DANH ring that does not include the destination node.
  • the received frame can only be forwarded to the quadbox ring through the quadbox side.
  • the quadbox node determines that the destination node is included in the connected DANH ring according to the first learning step, the quadbox node forwards the frame only to the DANH side connected to the DANH ring including the destination node. You may not forward the frame.
  • the frame is forwarded to the quadbox side only, and when it is determined that the quadbox node is connected to the DANH ring that includes the destination node, the frame is You can only forward to the DANH side.
  • the quadbox node may determine that the port where the forwarded frame returns is not directed to the destination node. You can lock the ports that connect to quadbox rings that do not point to these destination nodes.
  • the port of the side receiving the same frame a predetermined number of times or more is framed. It can be determined as a port of a side connected to a quadbox ring that does not overlap a path to a destination node of the node.
  • the predetermined number of times may be preset based on the number of quad box rings included in the network.
  • a predetermined number of times of receiving a frame copy may be set similar to the number of quadbox rings. In this case, if a predetermined number of times of receiving a frame copy is set to 50 times, it can correspond to almost all medium to large network topologies.
  • the network operates with frame lock applied only to the DANH ring up to 50 frames, but the quadbox ring up to 1000 frames thereafter.
  • the network operates with frame lock applied.
  • the frame reduction may not be optimized as compared with the case of setting a predetermined number of times of receiving a frame copy to 10 times.
  • the port lock scheme may be applied only to the DANH ring in the first learning stage, and the port lock scheme may be further applied to the quadbox ring in the second training stage, thereby further improving the traffic reduction performance.
  • the first quadbox node 60 may forward the frame to both the DANH side and quadbox side according to the standard HSR protocol when initially receiving a frame destined for the destination node B.
  • FIG. 5 the frame forwarded to the DANH side is received by the destination node B, and thus is not forwarded to the quadbox side of the first quadbox node 60 again. Therefore, the first quadbox node 60 does not lock the DANH side.
  • the frame towards the destination node B is then forwarded only to the DANH side of the first quadbox node 60.
  • the second quadbox node 70 forwards the frame directed to the first destination node B to the third quadbox node 80.
  • the third quadbox node 80 may forward the frame to both the DANH side and the quadbox side according to the standard HSR protocol.
  • the frame directed to the first destination node B is forwarded to the DANH side of the third quadbox node 80 again.
  • the DANH side of the third quadbox node 80 is locked by the operation of the first learning step.
  • the second frame is forwarded only to the quadbox ring connected to the third quadbox node 80.
  • the second quadbox node 70 forwards the frame destined for the destination node B to the quadbox ring connected to the third quadbox node 80 and receives the frame.
  • the second quadbox node 70 may lock a port connected to a quadbox ring connected to the third quadbox node 80.
  • the frame directed to the destination node B through the second quadbox node 70 may not be forwarded anymore.
  • FIG. 6 to 9 are graphs showing the improvement in traffic performance obtained when the port locking scheme is applied only to the DANH ring
  • FIG. 10 illustrates the port locking scheme for the quadbox ring and the case where the port locking technique is applied only to the DANH ring. This is a graph comparing the applied cases.
  • FIG. 6 is a graph comparing traffic generated according to the number of DANH rings in a case of applying a network traffic reduction method using a port lock and a case of using a standard HSR protocol according to an embodiment of the present invention.
  • FIG. 7 is a graph comparing traffic generated according to the number of quadbox rings for a network traffic reduction method using a port lock and a standard HSR protocol according to an embodiment of the present invention.
  • the traffic between the standard HRS protocol and the port locking scheme is significantly different, and the port locking scheme becomes more efficient as the number of quadbox rings increases.
  • FIG. 8 is a graph showing a reduction rate of traffic compared to a standard HSR protocol according to the number of DANH rings when the network traffic reduction method using port locking according to an embodiment of the present invention is applied
  • FIG. 9 is an embodiment of the present invention.
  • the graph shows the traffic reduction rate compared to the standard HSR protocol according to the number of quadbox rings.
  • FIG. 10 is a graph comparing traffic when a network traffic reduction method using a standard HSR protocol, a port lock on a DANH ring, and a port lock on a quadbox ring according to an embodiment of the present invention is applied.
  • the number of quadbox rings between the source and destination nodes can affect traffic performance. As shown in FIG. 10, as the number of quadbox rings between the source node and the destination node increases, the performance when the port lock is applied only to the DANH ring approaches the performance when the port lock is also applied to the quadbox ring. do. If the maximum number of quadbox rings in the network and the number of quadbox rings between the source and destination nodes are the same, then port lockout applies only to the DANH ring and port lockout applies to the quadbox ring. . Thus, the performance gains achieved by applying port locks to quadbox rings increase as the number of quadbox rings in the network increases and as the number of quadbox rings between the source and destination nodes decreases.
  • the performance of the network can be improved by reducing traffic generation in the HSR network of the connected ring topology.

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Abstract

La présente invention concerne un procédé permettant de réduire le trafic dans des réseaux de diverses structures, en particulier un procédé permettant de réduire le trafic dans un réseau Ethernet utilisant une norme HSR de topologie en anneau connecté, le procédé comprenant les étapes suivantes : une première étape d'apprentissage permettant de verrouiller par un nœud de boîtier quad un port latéral connecté par un anneau DANH qui ne comprend pas un nœud de destination d'une trame à transmettre, sur un réseau connecté à topologie en anneau, par rapport à la trame ; et une étape d'exécution consistant à transmettre une copie de la trame au nœud de destination, le long d'un trajet qui traverse un port non verrouillé. Selon la présente invention, la performance du réseau peut être améliorée par la réduction de la génération de trafic à l'intérieur du réseau HSR de topologie en anneau connecté.
PCT/KR2014/004958 2014-04-30 2014-06-03 Procédé permettant de réduire le trafic réseau par verrouillage de port WO2015167068A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180018994A (ko) * 2016-08-11 2018-02-22 명지대학교 산학협력단 Hsr 프로토콜에서의 프레임 멀티캐스팅 방법

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101655680B1 (ko) * 2015-05-29 2016-09-08 (주)앱스톤 Hsr 기반한 고가용성 네트워크 장치
KR20180028291A (ko) * 2016-09-08 2018-03-16 한국전기연구원 이더넷 프레임 기반의 트래픽 제어 방법

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110029687A1 (en) * 2009-07-31 2011-02-03 Abb Research Ltd Data transmission in a ring-type communication network
KR20120110154A (ko) * 2009-12-31 2012-10-09 노키아 지멘스 네트웍스 오와이 통신 네트워크 내에서 트래픽을 감소시키기 위하여 베어러 관리 정보를 이용하기 위한 방법들, 장치들 및 컴퓨터 프로그램 물건
KR101344596B1 (ko) * 2012-09-19 2013-12-26 한국과학기술원 Ｈｒｓ 프로토콜 기반 싱글 링 네트워크 클럭 동기화 방법
KR101348453B1 (ko) * 2012-10-30 2014-01-09 한양대학교 산학협력단 Ｈｓｒ 토폴로지에서 패킷 스케줄링 방법 및 장치

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110029687A1 (en) * 2009-07-31 2011-02-03 Abb Research Ltd Data transmission in a ring-type communication network
KR20120110154A (ko) * 2009-12-31 2012-10-09 노키아 지멘스 네트웍스 오와이 통신 네트워크 내에서 트래픽을 감소시키기 위하여 베어러 관리 정보를 이용하기 위한 방법들, 장치들 및 컴퓨터 프로그램 물건
KR101344596B1 (ko) * 2012-09-19 2013-12-26 한국과학기술원 Ｈｒｓ 프로토콜 기반 싱글 링 네트워크 클럭 동기화 방법
KR101348453B1 (ko) * 2012-10-30 2014-01-09 한양대학교 산학협력단 Ｈｓｒ 토폴로지에서 패킷 스케줄링 방법 및 장치

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180018994A (ko) * 2016-08-11 2018-02-22 명지대학교 산학협력단 Hsr 프로토콜에서의 프레임 멀티캐스팅 방법
KR101979433B1 (ko) * 2016-08-11 2019-05-17 명지대학교 산학협력단 Hsr 프로토콜에서의 프레임 멀티캐스팅 방법

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