WO2011127849A2 - 一种数据流传送方法及网络设备 - Google Patents
一种数据流传送方法及网络设备 Download PDFInfo
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- WO2011127849A2 WO2011127849A2 PCT/CN2011/074089 CN2011074089W WO2011127849A2 WO 2011127849 A2 WO2011127849 A2 WO 2011127849A2 CN 2011074089 W CN2011074089 W CN 2011074089W WO 2011127849 A2 WO2011127849 A2 WO 2011127849A2
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- Prior art keywords
- port
- data stream
- priority
- forwarding
- forwarding port
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000005540 biological transmission Effects 0.000 claims abstract description 23
- 238000010586 diagram Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000002716 delivery method Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/12—Avoiding congestion; Recovering from congestion
- H04L47/122—Avoiding congestion; Recovering from congestion by diverting traffic away from congested entities
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
- H04L12/1881—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast with schedule organisation, e.g. priority, sequence management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/74—Address processing for routing
- H04L45/745—Address table lookup; Address filtering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/22—Alternate routing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0289—Congestion control
Definitions
- the present invention relates to the field of communications, and in particular, to a data stream transmission method and a network device.
- IP Internet Protocol
- IP Internet Protocol
- VOIP Voice over Internet Protocol
- VPN Virtual Private Network
- IP networks It has been transformed from a pure data network to a carrier network with commercial value, so the IP network must provide the corresponding quality of service for each type of service it carries.
- the transmission path of the data stream is fixed. Once the current port is congested, the data stream can only be discarded according to the priority of the data stream, which greatly affects the service quality of the network.
- Embodiments of the present invention provide a data stream transmission method and a network device, which can ensure efficient transmission of data streams and improve service quality of the network.
- a data stream delivery method including:
- the data stream is transmitted using a first available port of the available ports; when the first available port is congested, the data stream is transmitted using a second available port of the available ports.
- a network device including:
- a forwarding port determining unit configured to determine a forwarding port according to a destination station of the data stream
- An available port determining unit configured to select, from the forwarding port, an available port whose port priority is less than or equal to the priority of the data stream
- a forwarding unit configured to forward the data stream by using a first available port of the available ports; and when the first available port is congested, transmitting the data stream by using a second available port of the available ports.
- a network device including:
- a port determining unit configured to determine, according to a destination of the data stream and a priority of the data stream, an available port for forwarding the data stream
- a forwarding unit configured to forward the data stream by using a first available port of the available ports; and when the first available port is congested, transmitting the data stream by using a second available port of the available ports.
- the data stream transmission method and the network device provided by the embodiment of the present invention determine an available port for transmitting the data stream according to a priority of the data stream and a priority of the port; and transmitting the data stream by using the first available port of the available port; When an available port is congested, the data stream is transmitted using the second available port of the available ports. In this way, the prior art discards the data flow according to the priority once the current port is congested. When the first available port of the transmitted data stream is congested, the data stream can be transferred to the second unusable port for transmission, thereby ensuring efficient transmission of the data stream, thereby improving the quality of service of the network.
- FIG. 1 is a schematic flow chart of a data stream transmission method according to an embodiment of the present invention.
- FIG. 2 is a schematic structural diagram of a network device according to an embodiment of the present invention
- FIG. 3 is another schematic structural diagram of a network device according to an embodiment of the present invention
- FIG. 4 is another schematic structural diagram of a network device according to an embodiment of the present invention
- FIG. 5 is another schematic structural diagram of a network device according to an embodiment of the present invention.
- a data stream transmission method provided by an embodiment of the present invention, as shown in FIG. 1, includes:
- the first network device determines, according to the forwarding table, a candidate forwarding port for transmitting the data stream.
- the first network device determines, according to the priority of the data stream and the priority of the candidate forwarding port, a forwarding port for transmitting the data stream.
- the first network device transmits the data stream through the first forwarding port in the forwarding port; when the first forwarding port is congested, the data stream is transmitted through the second forwarding port in the forwarding port; wherein, the priority of the first forwarding port Higher than the priority of the second forwarding port.
- the first forwarding port may be the one with the highest priority among the forwarding ports.
- determining, according to the priority of the data stream and the priority of the candidate forwarding port, the forwarding port used to transmit the data stream may include: Below or equal to the priority of the data stream, it is determined that the port is a forwarding port that can be used to transmit the data stream. That is, for this data stream, the state of the port is UP.
- the determining the forwarding port for transmitting the data stream according to the priority of the data stream and the priority of the candidate forwarding port may further include: when the priority of the port is higher than the priority of the data stream, Make sure the port is not a forwarding port that can be used to transport the data stream. That is, for this data stream, the state of the port is DOWN.
- QOS BFD Quality of Service Bidirectional Forwarding Detection
- QOS ETH OAM Quality Of Service Ethernet Operations Administration and Maintenance
- the detection technology such as the operation management and maintenance of the Ethernet with the priority of the priority, detects the connectivity of the first data stream on a port (referred to as port X here for convenience of explanation), wherein The priority of port X is equal to the priority of the first data stream.
- the status of the port X corresponding to the second data stream is still UP, and the priority of the second data stream is higher than the priority of the first data stream.
- the port priority of the network device can also be set to 4. Levels (increment from priority 1 to priority 4).
- the priority of port A is 1, the priority of port B is 4, the priority of port C is 2.
- the priority of port D is 3, and the priority of port E is 4.
- the network device can search its own forwarding table, such as a routing table, a MAC address table, or an MPLS table, according to the destination address of the data stream, and determine the candidate forwarding port.
- the candidate forwarding ports are: Port A, Port B, Port C, and Port D.
- the network device can determine a forwarding port for transmitting the data stream according to the priority of the data stream and the priority of the candidate forwarding port.
- the forwarding ports are: Port A, Port C, and Port D.
- the data stream can be delivered through one of them.
- the data stream can be transmitted through the port D having the highest priority.
- the data stream can be transmitted through the port C of the lower priority. And so on.
- whether to discard the data stream may be considered according to the priority of the data stream.
- a PST Port State Table
- the port status can be determined based on the priority of the port and the priority of the data stream. See Tables 1 through 4. After receiving the data stream, the PST can be queried to determine whether a port is a forwarding port that can be used to transmit the data stream.
- the data stream transmission method provided by the embodiment of the present invention determines a forwarding port for transmitting the data stream according to the priority of the data stream and the priority of the port; when the port with a relatively high priority is congested, the priority may be used.
- the lower port transmits the data stream.
- the prior art discards the data stream according to the priority of the data stream once the current port is congested. Thereby ensuring efficient transmission of data streams, thereby improving the network The quality of service.
- the data stream is transmitted to the third forwarding port of the second network device by using the first forwarding port, where the priority of the third forwarding port is lower than or equal to The priority of a forwarding port.
- the data stream can be transmitted to the fourth forwarding port of the third network device through the third forwarding port; wherein the priority of the fourth forwarding port is lower than or equal to the priority of the third forwarding port. And so on, until the data stream is delivered to the destination device.
- the port of each network device is pre-assigned according to the priority of each port of each network device in the network, and the port of the other network device with the priority below is connected to form a priority relationship.
- ISIS Intermediate System to Intermediate System routing protocol
- BGP Border Gateway Protocol
- Open SPSP Open Shortest Path First
- other protocols which specify that the port of each network device is connected to the port of the other network device whose priority is below, forming a forwarding table with a priority relationship.
- the port of priority 8 of the first network device may be pre-assigned to the port with the port priority of the second network device being 1, 2, 3, 4, 5, 6, 7, 8 for the first network device.
- the port of priority 7 is pre-assigned to the port with the port priority of the second network device being 1, 2, 3, 4, 5, 6, and 7.
- the port of the first network device having the priority of 6 is pre-designated with The port priority of the second network device is 1, 2, 3, 4, 5, 6 port connection. ⁇ ⁇ and so on.
- the first network device when the data stream of priority 6 reaches the entrance of the network (in this example, the first network device), the first network device provides the method according to the foregoing S 100-S 102 or an alternative embodiment thereof.
- the ports that can be used to forward the data stream include: Ports with priority 1, 2, 3, 4, 5, and 6. Since each port having the priority of 1, 2, 3, 4, 5, and 6 is respectively pre-assigned to the port of the second network device whose priority is less than or equal to itself, the data flow with the priority of 6 is reached. Second network device After that, the port that forwards the data stream can be directly determined according to the destination site of the data stream and the priority of the data stream.
- the data stream with higher priority can select more ports for transmission, so there are more forwarding paths to enable more choices and achieve high reliability forwarding. .
- the data stream transmission network device 20 provided by one embodiment of the present invention, as shown in FIG. 2, includes:
- the candidate port determining unit 201 is configured to determine a candidate forwarding port for transmitting the data stream.
- the forwarding port determining unit 202 is configured to determine, according to a priority of the data stream and a priority of the candidate forwarding port, a forwarding port for transmitting the data stream.
- the forwarding unit 203 is configured to: transmit the data stream by using the first forwarding port in the forwarding port; when the first forwarding port is congested, transmit the data stream by using the second forwarding port in the forwarding port; wherein, the priority of the first forwarding port Higher than the priority of the second forwarding port.
- the network device determines the forwarding port used for transmitting the data stream according to the priority of the data stream and the priority of the port.
- the priority of the port may be relatively low.
- the port transmits the data stream.
- the prior art discards the data stream according to the priority of the data stream once the current port is congested. Thereby ensuring the effective transmission of the data stream, thereby improving the service quality of the network.
- the forwarding port determining unit 202 may include: a query subunit 2020, configured to query a port state table, and obtain a state of the port, where the port state table includes a port priority and a data flow. The correspondence between priority and port status.
- the forwarding port determining unit 202 may include: a first determining subunit 2021, configured to: when the priority of the port is lower than or equal to the data flow When the priority is determined, the port is determined to be a forwarding port that can be used to transport the data stream.
- the second determining subunit 2022 is configured to determine that the port is not a forwarding port that can be used to transmit the data stream when the priority of the port is higher than the priority of the data stream.
- the network device may further include:
- the discarding unit 204 is configured to determine whether to discard the data stream according to the priority of the data stream when congestion occurs on all forwarding ports that can be used to transmit the data stream.
- An embodiment of the present invention provides a data stream transmission network system 40, including: a first network device 401 and a second network device 402, where a first forwarding port of the first network device is connected to a third forwarding port of the second network device, The second forwarding port of the first network device is connected to the fourth forwarding port of the second network device; wherein the priority of the third forwarding port is lower than or equal to the priority of the first forwarding port, and the priority of the fourth forwarding port is Below or equal to the priority of the second forwarding port;
- the first network device 401 is configured to determine, according to the forwarding table of the first network device 401, a candidate forwarding port for transmitting the data stream, and determine, according to the priority of the data stream and the priority of the candidate forwarding port, for transmitting the data.
- the forwarding port of the stream transmits the data stream through the first forwarding port in the forwarding port; when the first forwarding port is congested, the data stream is transmitted through the second forwarding port in the forwarding port; wherein the priority of the first forwarding port is high The priority of the second forwarding port;
- the second network device 402 is configured to receive the data stream from the first network device, and determine, according to the forwarding table of the second network device 402, a forwarding port for transmitting the data stream.
- the first network device may determine, according to the priority of the data flow and the priority of the port, a forwarding port for transmitting the data stream; when the port with a relatively high priority is congested, the network device may be utilized.
- a port with a relatively low priority carries the data stream.
- the prior art discards the data stream according to the priority of the data stream once the current port is congested. Thereby ensuring the effective transmission of the data stream, thereby improving the quality of service of the network.
- the second network device directly determines the forwarding port for transmitting the data stream according to the forwarding table, and improves the forwarding efficiency while ensuring the quality of the data stream service.
- the network device in the foregoing embodiment may be a router, a switch, or the like.
- the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed.
- the foregoing steps include the steps of the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.
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Description
一种数据流传送方法及网络设备 技术领域
本发明涉及通信领域, 尤其涉及一种数据流传送方法及网络设 备。
背景技术
传统的 IP ( Internet Protocol , 互联网协议) 网络, 主要 载数 据业务, 采用尽力传送的方式, 服务质量显的无关紧要。 但是, 随 着以 IP技术为核心的因特网的飞速发展, 以及各种新业务的出现, 如 VOIP ( Voice over Internet Protocol , 网给电话), VPN ( Virtual Private Network , 虚拟专用网络) 等, IP 网络已经由一个单纯的数 据网络转变为具有商业价值的承载网络, 因此 IP网络必须为其承载 的每类业务提供相应的服务质量。
但现有技术中, 数据流的传送路径固定, 一旦当前端口拥塞, 只能按数据流优先级对数据流进行丟弃, 极大地影响了 网络的服务 质量。
发明内容
本发明的实施例提供一种数据流传送方法及网络设备, 能够保 证数据流的有效传送, 提高网络的服务质量。
为达到上述目 的, 本发明的实施例采用如下技术方案:
一方面, 提供一种数据流传送方法, 包括:
根据数据流的优先级和端口的优先级确定传送所述数据流的可 用端口;
利用所述可用端口中的第一可用端口传送所述数据流; 当所述 第一可用端口拥塞时, 利用所述可用端口中的第二可用端口传送所 述数据流。
一方面, 提供一种网络设备, 包括:
转发端口确定单元,用于根据数据流的目的站点确定转发端口;
可用端口确定单元, 用于从所述转发端口中选出端口优先级小 于等于所述数据流优先级的可用端口;
转发单元, 用于利用所述可用端口中的第一可用端口转发所述 数据流; 当所述第一可用端口拥塞时, 利用所述可用端口中的第二 可用端口传送所述数据流。
一方面, 提供一种网络设备, 包括:
端口确定单元, 用于根据数据流的目的站点和所述数据流的优 先级确定转发所述数据流的可用端口;
转发单元, 用于利用所述可用端口中的第一可用端口转发所述 数据流; 当所述第一可用端口拥塞时, 利用所述可用端口中的第二 可用端口传送所述数据流。
本发明实施例提供的数据流传送方法及网络设备, 根据数据流 的优先级和端口的优先级确定传送该数据流的可用端口; 利用可用 端口中的第一可用端口传送该数据流; 当第一可用端口拥塞时, 利 用可用端口中的第二可用端口传送该数据流。 这样, 避免了现有技 术中一旦当前端口拥塞就根据优先级抛弃数据流的做法。 改为当传 送数据流的第一可用端口拥塞时, 该数据流能够转到未拥塞的第二 可用端口上进行传送, 从而保证了数据流的有效传送, 进而提高了 网络的服务质量。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案, 下 面将对实施例或现有技术描述中所需要使用的附图作筒单地介绍, 显而易见地, 下面描述中的附图仅仅是本发明的一些实施例, 对于 本领域普通技术人员来讲, 在不付出创造性劳动的前提下, 还可以 根据这些附图获得其他的附图。
图 1 为本发明一个实施例提供的数据流传送方法的流程示意 图;
图 2为本发明一个实施例提供的网络设备的结构示意图; 图 3为本发明一个实施例提供的网络设备的另一结构示意图;
图 4为本发明一个实施例提供的网络设备的另一结构示意图; 图 5为本发明一个实施例提供的网络设备的另一结构示意图。 具体实施方式
下面将结合本发明实施例中的附图, 对本发明实施例中的技术 方案进行清楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明 一部分实施例, 而不是全部的实施例。 基于本发明中的实施例, 本 领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他 实施例, 都属于本发明保护的范围。
本发明的一个实施例提供的数据流传送方法, 如图 1 所示, 包 括:
5100、 第一网络设备根据转发表, 确定用于传送数据流的候选 转发端口 。
5101、 第一网络设备根据该数据流的优先级和上述候选转发端 口的优先级, 确定用于传送该数据流的转发端口。
5102、 第一网络设备通过转发端口中的第一转发端口传送数据 流; 当第一转发端口拥塞时, 通过转发端口中的第二转发端口传送 该数据流; 其中, 第一转发端口的优先级高于第二转发端口的优先 级。
可选的, 在本发明的另一实施例中, 上述第一转发端口可以是 转发端口中优先级最高的端口。
可选的, 在本发明的另一实施例中, 上述根据该数据流的优先 级和上述候选转发端口的优先级, 确定用于传送该数据流的转发端 口, 可以包括: 当端口的优先级低于或等于数据流的优先级时, 确 定该端口是可以用于传送该数据流的转发端口。 即, 对于该数据流, 该端口的 态为 UP。
另一方面, 上述根据该数据流的优先级和上述候选转发端口的 优先级, 确定用于传送该数据流的转发端口, 还可以包括: 当端口 的优先级高于数据流的优先级时, 确定该端口不是可以用于传送该 数据流的转发端口。 即, 对于该数据流, 该端口的状态为 DOWN。
可选的,在本发明的又一实施例中,可以通过 QOS BFD( Quality Of service Bidirectional Forwarding Detection , 带月良务优先级的双向 转发检测 ) 或者 QOS ETH OAM ( Quality Of service Ethernet Operations Administration and Maintenance , 带月良务优先级的以太网 的运营管理和维护) 等检测技术, 对某个端口 (为便于说明, 此处 筒称为端口 X ) 上, 第一数据流的连通性进行检测, 其中, 端口 X 的优先级与第一数据流的优先级相等。 当检测到第一数据流的连通 状态出现异常时,将端口 X对应于第一数据流的状态修改为 D0WN。
可选的, 上述端口 X 对应于第二数据流的状态仍然是 UP , 其 中, 第二数据流的优先级高于第一数据流的优先级。
下面介绍一个示例性的场景。 在本场景中, 假设数据流的优先 级为 4个级别, 网络设备的端口有 5 个 (端口 A , 端口 B , …… , 端口 E ) , 则可以将网络设备的端口优先级也设为 4个级别 (从优先 级 1至优先级 4递增)。 其中, 端口 A的优先级为 1 , 端口 B的优先 级为 4、 端口 C的优先级为 2、 端口 D的优先级为 3、 端口 E的优先 级为 4。
因此, 当该网络设备接收到优先级别为 3 的数据流时, 该网络 设备可以根据该数据流的目 的地址查找自身的转发表, 如路由表、 MAC地址表或 MPLS表等, 确定候选转发端口。 在本场景中, 候选 转发端口为: 端口 A , 端口 B , 端口 C和端口 D。
然后, 网络设备可以根据数据流的优先级和上述候选转发端口 的优先级, 确定用于传送该数据流的转发端口。 在本场经中, 转发 端口为: 端口 A , 端口 C和端口 D。
确定转发端口后, 可通过其中的一个传送该数据流。 优选的, 可以通过其中优先级最高的端口 D传送该数据流。
当端口 D 出现拥塞时, 可以通过优先级次之的端口 C传送该数 据流。 以此类推。 可选的, 当所有可用于传送该数据流的转发端口 均出现拥塞时, 可以根据该数据流的优先级, 考虑是否丟弃该数据 流。
进一步的, 还可以为每个端口优先级设置一个 PST ( Port State Table , 端口状态表)。 在 PST 中, 端口状态可以根据端口的优先级 以及数据流的优先级来确定。 参见表 1 至表 4。 接收到数据流后, 可以查询 PST , 确定某一个端口是否为可用于传送该数据流的转发 端口 。
表 1、 端口优先级为 1 的 PST
表 2、 端口优先级为 2的 PST
端 口 优 数据 流优 端口状态
先级 先级
3 1 DOWN
2 DOWN
3 UP
4 UP
5 UP
6 UP
7 UP
8 UP
表 3、 端口优先级为 3的 PST
表 4、 端口优先级为 4的 PST
本发明实施例提供的数据流传送方法, 根据数据流的优先级和 端口的优先级确定用于传送该数据流的转发端口; 当优先级相对较 高的端口 出现拥塞时, 可以利用优先级相对较低的端口传送数据流。 这样, 避免了现有技术中一旦当前端口拥塞就根据数据流的优先级 抛弃数据流的做法。 从而保证了数据流的有效传送, 进而提高了网
络的服务质量。
可选的, 在本发明的又一实施例中, 数据流通过上述第一转发 端口, 传送到第二网络设备的第三转发端口; 其中, 第三转发端口 的优先级, 低于或等于第一转发端口的优先级。 相类似的, 数据流 可以通过第三转发端口, 传送到第三网络设备的第四转发端口; 其 中, 第四转发端口的优先级, 低于或等于第三转发端口的优先级。 以此类推, 直至数据流被传送至目的设备。
在这种场景中, 只需要在网络的入口处执行上述 S 100~S 102或 者其可选实施例提供的方法即可。
可选的, 可以预先根据网络中各个网络设备的各个端口的优先 级, 预先指定各网络设备的端口与另一网络设备的、 优先级在其之 下的端口连接, 形成含有优先级关系的转发表。 可选的, 可以通过 扩展 ISIS ( Intermediate System to Intermediate System routing protocol , 中间系统到中间系统的路由协议)、 BGP ( Border Gateway Protocol , 边缘网关协议) 或 0SPF ( Open Shortest Path First , 开放 最短路径优先协议) 等协议, 指定各网络设备的端口与另一网络设 备的、 优先级在其之下的端口连接, 形成含有优先级关系的转发表。
例如, 可以将第一网络设备的优先级为 8 的端口预先指定与第 二网络设备的端口优先级为 1、 2、 3、 4、 5、 6、 7、 8的端口连接, 第一网络设备的优先级为 7 的端口预先指定与第二网络设备的端口 优先级为 1、 2、 3、 4、 5、 6、 7 的端口连接, 第一网络设备的优先 级为 6的端口预先指定与第二网络设备的端口优先级为 1、 2、 3、 4、 5、 6的端口连接 . · · 以此类推。
这样, 当优先级为 6 的数据流到达了网络的入口 (本示例中, 为第一网路设备) 时, 第一网路设备根据上述 S 100~S 102或者其可 选实施例提供的方法, 确定可用于转发该数据流的端口包括: 优先 级为 1、 2、 3、 4、 5、 6 的端口。 由于优先级为 1、 2、 3、 4、 5、 6 的各端口都分别被预先指定与第二网络设备中、 优先级小于等于自 身的端口连接因此, 当上述优先级为 6 的数据流到达第二网络设备
后, 可以直接根据该数据流的目 的站点和该数据流的优先级确定转 发该数据流的端口。
可以看出, 相较于优先级低的数据流, 优先级较高的数据流可 以选择更多的端口进行传送, 因此有更多的转发路径从而能够有更 多的选择, 实现高可靠性转发。
需要说明的是, 本发明的实施例中, 序号仅仅为了描述清楚, 不代表优劣, 也不代表先后。
本发明一个实施例提供的数据流传送网络设备 20 ,如图 2所示, 包括:
候选端口确定单元 201 , 用于确定用于传送数据流的候选转发 端口。
转发端口确定单元 202 , 用于根据该数据流的优先级和上述候 选转发端口的优先级, 确定用于传送该数据流的转发端口。
转发单元 203 , 用于通过转发端口中的第一转发端口传送数据 流; 当第一转发端口拥塞时, 通过转发端口中的第二转发端口传送 该数据流; 其中, 第一转发端口的优先级高于第二转发端口的优先 级。
本发明实施例提供的网络设备, 根据数据流的优先级和端口的 优先级确定用于传送该数据流的转发端口; 当优先级相对较高的端 口 出现拥塞时, 可以利用优先级相对较低的端口传送数据流。 这样, 避免了现有技术中一旦当前端口拥塞就根据数据流的优先级抛弃数 据流的做法。 从而保证了数据流的有效传送, 进而提高了网络的服 务质量。
可选的, 如图 3所示, 该转发端口确定单元 202可以包括: 查询子单元 2020 , 用于查询端口状态表, 获得端口的状态, 其 中, 所述端口状态表包括端口优先级、 数据流优先级以及端口状态 的对应关系。
可选的, 如图 4所示, 该转发端口确定单元 202可以包括: 第一确定子单元 2021 , 用于当端口的优先级低于或等于数据流
的优先级时, 确定该端口是可以用于传送该数据流的转发端口。 第二确定子单元 2022 , 用于当端口的优先级高于数据流的优先 级时, 确定该端口不是可以用于传送该数据流的转发端口。
可选的, 如图 5所示, 所述网络设备还可以包括:
丟弃单元 204 , 用于当所有可用于传送该数据流的转发端口均 出现拥塞时, 根据该数据流的优先级, 判断是否丟弃该数据流。
本发明一个实施例提供的一种数据流传送网络系统 40 , 包括: 第一网络设备 401 和第二网络设备 402 , 第一网络设备的第一转发 端口与第二网络设备的三转发端口连接, 第一网络设备的第二转发 端口与第二网络设备的四转发端口连接; 其中, 第三转发端口的优 先级, 低于或等于第一转发端口的优先级, 第四转发端口的优先级, 低于或等于第二转发端口的优先级; 其中,
第一网络设备 401 , 用于根据第一网络设备 401 转发表, 确定 用于传送数据流的候选转发端口, 根据该数据流的优先级和上述候 选转发端口的优先级, 确定用于传送该数据流的转发端口, 通过转 发端口中的第一转发端口传送数据流; 当第一转发端口拥塞时, 通 过转发端口中的第二转发端口传送该数据流; 其中, 第一转发端口 的优先级高于第二转发端口的优先级;
第二网络设备 402 , 用于接收来自第一网络设备数据流, 并根 据第二网络设备 402的转发表, 确定用于传送该数据流的转发端口。
本发明实施例提供的网络系统, 第一网络设备可以根据数据流 的优先级和端口的优先级确定用于传送该数据流的转发端口; 当优 先级相对较高的端口 出现拥塞时, 可以利用优先级相对较低的端口 传送数据流。 这样, 避免了现有技术中一旦当前端口拥塞就根据数 据流的优先级抛弃数据流的做法。 从而保证了数据流的有效传送, 进而提高了网络的服务质量。 第二网络设备直接根据转发表确定用 于传送该数据流的转发端口, 在保证数据流服务质量的同时, 提高 了转发效率。
可选的, 上述实施例中的网络设备可以为路由器或交换机等。
本领域普通技术人员可以理解: 实现上述方法实施例的全部或 部分步骤可以通过程序指令相关的硬件来完成, 前述的程序可以存 储于一计算机可读取存储介质中, 该程序在执行时, 执行包括上述 方法实施例的步骤; 而前述的存储介质包括: ROM、 RAM , 磁碟或 者光盘等各种可以存储程序代码的介质。
以上所述, 仅为本发明的具体实施方式, 但本发明的保护范围 并不局限于此, 任何熟悉本技术领域的技术人员在本发明揭露的技 术范围内, 可轻易想到变化或替换, 都应涵盖在本发明的保护范围 之内。 因此, 本发明的保护范围应以所述权利要求的保护范围为准。
Claims
1、 一种数据流传送方法, 其特征在于, 包括:
第一网络设备根据转发表, 确定用于传送数据流的候选转发端 口;
根据该数据流的优先级和上述候选转发端口的优先级,确定用于 传送该数据流的转发端口;
通过转发端口中的第一转发端口传送数据流; 当第一转发端口拥 塞时, 通过转发端口中的第二转发端口传送该数据流; 其中, 第一转 发端口的优先级高于第二转发端口的优先级。
2、 根据权利要求 1 所述的方法, 其特征在于, 所述根据该数据 流的优先级和上述候选转发端口的优先级, 确定用于传送该数据流的 转发端口, 包括: 查询端口状态表, 确定用于传送该数据流的转发端 口; 其中, 所述端口状态表包括端口优先级、 数据流优先级以及端口 状态的对应关系。
3、 根据权利要求 1或 2所述的方法, 其特征在于, 当端口的优 先级低于或等于数据流的优先级时, 确定该端口是可以用于传送该数 据流的转发端口;
当端口的优先级高于数据流的优先级时,确定该端口不是可以用 于传送该数据流的转发端口。
4、 根据权利要求 1或 2所述的方法, 其特征在于, 所述根据转 发表, 确定用于传送数据流的候选转发端口包括:
根据数据流的目的地址,查找路由表或介质访问控制地址表或多 协议标签交换表, 确定候选转发端口。
5、 根据权利要求 1或 2所述的方法, 其特征在于, 所述方法还 包括:
当所有用于传送该数据流的转发端口拥塞时,根据数据流的优先 级对所述数据流进行丟弃。
6、 一种数据流传送网络设备, 其特征在于, 包括:
候选端口确定单元, 用于确定用于传送数据流的候选转发端口; 转发端口确定单元,用于根据该数据流的优先级和上述候选转发 端口的优先级, 确定用于传送该数据流的转发端口;
转发单元, 用于通过转发端口中的第一转发端口传送数据流; 当 第一转发端口拥塞时, 通过转发端口中的第二转发端口传送该数据 流; 其中, 第一转发端口的优先级高于第二转发端口的优先级。
7、 根据权利要求 6所述的网络设备, 其特征在于, 所述转发端 口确定单元包括:
查询子单元, 用于查询端口状态表, 其中, 所述端口状态表包括 端口优先级、 数据流优先级以及端口状态的对应关系。
8、 根据权利要求 6或 7所述的网络设备, 其特征在于, 所述转 发端口确定单元包括:
第一确定子单元,用于当端口的优先级低于或等于数据流的优先 级时, 确定该端口是可以用于传送该数据流的转发端口;
第二确定子单元, 用于当端口的优先级高于数据流的优先级时, 确定该端口不是可以用于传送该数据流的转发端口。
9、 一种数据流传送网络系统, 其特征在于, 包括:
第一网络设备和第二网络设备,第一网络设备的第一转发端口与 第二网络设备的三转发端口连接, 第一网络设备的第二转发端口与第 二网络设备的四转发端口连接; 其中, 第三转发端口的优先级, 低于 或等于第一转发端口的优先级, 第四转发端口的优先级, 低于或等于 第二转发端口的优先级; 其中,
第一网络设备, 用于根据第一网络设备转发表, 确定用于传送数 据流的候选转发端口,根据该数据流的优先级和上述候选转发端口的 优先级, 确定用于传送该数据流的转发端口, 通过转发端口中的第一 转发端口传送数据流; 当第一转发端口拥塞时, 通过转发端口中的第 二转发端口传送该数据流; 其中, 第一转发端口的优先级高于第二转 发端口的优先级;
第二网络设备, 用于接收来自第一网络设备数据流, 并根据第二 网络设备的转发表, 确定用于传送该数据流的转发端口。
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US20160218980A1 (en) | 2016-07-28 |
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EP2712131A4 (en) | 2014-03-26 |
CN102893560B (zh) | 2015-11-25 |
US9866486B2 (en) | 2018-01-09 |
ES2548542T3 (es) | 2015-10-19 |
WO2011127849A3 (zh) | 2012-04-19 |
EP2712131B1 (en) | 2015-07-22 |
US9331945B2 (en) | 2016-05-03 |
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