WO2016000481A1 - Procédé de commutation de chemin et périphérique de réseau - Google Patents

Procédé de commutation de chemin et périphérique de réseau Download PDF

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Publication number
WO2016000481A1
WO2016000481A1 PCT/CN2015/077386 CN2015077386W WO2016000481A1 WO 2016000481 A1 WO2016000481 A1 WO 2016000481A1 CN 2015077386 W CN2015077386 W CN 2015077386W WO 2016000481 A1 WO2016000481 A1 WO 2016000481A1
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lsp
bandwidth
microwave link
microwave
available bandwidth
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PCT/CN2015/077386
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English (en)
Chinese (zh)
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阴元斌
龙勇
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华为技术有限公司
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Publication of WO2016000481A1 publication Critical patent/WO2016000481A1/fr

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  • the present invention relates to the field of communications and, more particularly, to a method and network device for path switching.
  • microwave bearing the bandwidth of the microwave carrier is subject to changes due to weather and other factors. When the weather is good, the bandwidth is large, the weather is bad, and the bandwidth is reduced. The bandwidth reduction naturally affects the quality of services, and some service packets may be discarded.
  • the embodiment of the invention provides a path switching method and a network device, which can improve the utilization of network bandwidth.
  • a method for path switching including:
  • the available bandwidth of the first microwave link of the first label switching path LSP is smaller than the first LSP.
  • the bandwidth switching threshold the first LSP needs to be switched.
  • the bandwidth switching threshold of the first LSP is based on the pre-configured priority of the first LSP and the pre-configured bandwidth switching threshold and the priority. Relationship determined;
  • the service in the first LSP is switched.
  • determining that the first LSP needs to be switched includes:
  • bandwidth change information of the first microwave link where the bandwidth change information of the first microwave link includes an available bandwidth of the first microwave link
  • the available bandwidth of the first microwave link is smaller than the bandwidth switching threshold of the first LSP, it is determined that the first LSP needs to be switched.
  • determining that the first LSP needs to be switched includes:
  • the bandwidth switching threshold of the LSP is determined by the intermediate node of the first LSP according to the pre-configured priority of the first LSP and the correspondence between the pre-configured bandwidth switching threshold and the priority.
  • the switching processing of the service in the first LSP includes:
  • the service in the first LSP is switched to the second LSP, where the second LSP is a backup LSP of the first LSP.
  • the switching processing of the service in the first LSP includes:
  • the switching notification message of the second LSP sent by the intermediate node of the second LSP is not received, and the bandwidth change information of the second microwave link of the second LSP sent by the second microwave device is not received, the first The service in the LSP is switched to the second LSP, where the second The LSP is the backup LSP of the first LSP.
  • the switching processing of the service in the first LSP includes:
  • the service in the first LSP is switched to the second LSP.
  • the bandwidth change information of the first microwave link further includes a maximum bandwidth of the first microwave link
  • the switching processing of the service in the first LSP includes:
  • the switch notification message of the second LSP obtains, by the switch notification message of the second LSP, the available bandwidth of the second microwave link of the second LSP and the second, if the switch notification message of the second LSP is sent by the intermediate node of the second LSP
  • the maximum bandwidth of the microwave link or, if the bandwidth change information of the second microwave link of the second LSP sent by the second microwave device is received, the current bandwidth is obtained from the bandwidth change information of the second microwave link.
  • the ratio of the available bandwidth of the second microwave link to the maximum bandwidth of the second microwave link is greater than the ratio of the available bandwidth of the first microwave link to the maximum bandwidth of the first microwave link.
  • the handover notification message of the first LSP carries the available bandwidth of the current first microwave link
  • the switching processing of the service in the first LSP includes:
  • the service in the first LSP is switched to the second LSP.
  • the handover notification message of the first LSP carries the available bandwidth of the first microwave link and the first microwave link. Maximum bandwidth
  • the switching processing of the service in the first LSP includes:
  • the switch notification message of the second LSP obtains, by the switch notification message of the second LSP, the available bandwidth of the second microwave link of the second LSP and the second, if the switch notification message of the second LSP is sent by the intermediate node of the second LSP
  • the maximum bandwidth of the microwave link or, if the bandwidth change information of the second microwave link of the second LSP sent by the second microwave device is received, the current bandwidth is obtained from the bandwidth change information of the second microwave link.
  • the ratio of the available bandwidth of the second microwave link to the maximum bandwidth of the second microwave link is greater than the ratio of the available bandwidth of the first microwave link to the maximum bandwidth of the first microwave link.
  • a method for path switching including:
  • the available bandwidth of the first RRC link is smaller than the bandwidth switching threshold of the first LSP, send a handover notification message of the first LSP to the head node of the first LSP, so that the head node is configured according to the first LSP.
  • the handover notification message determines that the first LSP needs to be handed over.
  • the handover notification message of the first LSP carries the available bandwidth of the current first microwave link, or the available bandwidth of the first microwave link and the maximum of the first microwave link. bandwidth.
  • a network device including:
  • a determining module configured to determine, when the available bandwidth of the first microwave link of the first label switching path LSP is smaller than a bandwidth switching threshold of the first LSP, determining that the first LSP needs to be switched,
  • the bandwidth switching threshold of the first LSP is determined according to the pre-configured priority of the first LSP and the correspondence between the pre-configured bandwidth switching threshold and the priority;
  • the switching processing module is configured to perform switching processing on the service in the first LSP.
  • the network device further includes:
  • a first receiving module configured to receive bandwidth change information of the first microwave link that is sent by the first microwave device, where the bandwidth change information of the first microwave link includes an available bandwidth of the first microwave link;
  • the determining module is specifically configured to determine, according to the pre-configured priority of the first LSP and the pre-configured bandwidth switching threshold and the priority relationship, the first LSP that passes through the first microwave link. If the bandwidth of the first LSP is less than the bandwidth switching threshold of the first LSP, it is determined that the first LSP needs to be switched.
  • the network device further includes:
  • a second receiving module configured to receive a handover notification message of the first LSP sent by the intermediate node of the first LSP, where the handover notification message of the first LSP is used by the intermediate node of the first LSP in the first microwave chain
  • the bandwidth switching threshold of the first LSP is determined by the intermediate node of the first LSP according to the pre-configured priority of the first LSP and the pre-configured bandwidth switching threshold. The correspondence with the priority is determined;
  • the determining module is specifically configured to determine, according to the handover notification message of the first LSP, that the first LSP needs to be switched.
  • the switching processing module is specifically configured to switch the service in the first LSP to the second LSP.
  • the second LSP is a backup LSP of the first LSP.
  • the switching processing module is specifically configured to: if the network device does not receive the intermediate node of the second LSP Transmitting the service in the first LSP to the second LSP by receiving the handover notification message of the second LSP and not receiving the bandwidth change information of the second microwave link of the second LSP sent by the second microwave device
  • the second LSP is a backup LSP of the first LSP.
  • the switching processing module is specifically used,
  • the available bandwidth of the second microwave link of the second LSP is obtained from the handover notification message of the second LSP. Or if the network device receives the bandwidth change information of the second microwave link of the second LSP that is sent by the second microwave device, acquiring the current second microwave link from the bandwidth change information of the second microwave link.
  • the service in the first LSP is switched to the second LSP.
  • the bandwidth change information of the first microwave link further includes a maximum bandwidth of the first microwave link
  • the switching processing module is specifically used,
  • the available bandwidth of the second microwave link of the second LSP is obtained from the handover notification message of the second LSP.
  • the maximum bandwidth of the second microwave link, or the bandwidth change from the second microwave link if the network device receives the bandwidth change information of the second microwave link of the second LSP sent by the second microwave device Acquiring the current available bandwidth of the second microwave link and the maximum bandwidth of the second microwave link, where the second LSP is a backup LSP of the first LSP;
  • the ratio of the available bandwidth of the second microwave link to the maximum bandwidth of the second microwave link is greater than the ratio of the available bandwidth of the first microwave link to the maximum bandwidth of the first microwave link.
  • the handover notification message of the first LSP carries the available bandwidth of the current first microwave link
  • the switching processing module is specifically used,
  • the available bandwidth of the second microwave link of the second LSP is obtained from the handover notification message of the second LSP. Or if the network device receives the bandwidth change information of the second microwave link of the second LSP that is sent by the second microwave device, acquiring the current second microwave link from the bandwidth change information of the second microwave link. Available bandwidth, wherein the second LSP is the The backup LSP of the first LSP;
  • the service in the first LSP is switched to the second LSP.
  • the handover notification message of the first LSP carries the available bandwidth of the first microwave link and the first microwave link. Maximum bandwidth
  • the switching processing module is specifically used,
  • the available bandwidth of the second microwave link of the second LSP is obtained from the handover notification message of the second LSP.
  • the maximum bandwidth of the second microwave link, or the bandwidth change from the second microwave link if the network device receives the bandwidth change information of the second microwave link of the second LSP sent by the second microwave device Acquiring the current available bandwidth of the second microwave link and the maximum bandwidth of the second microwave link, where the second LSP is a backup LSP of the first LSP;
  • the ratio of the available bandwidth of the second microwave link to the maximum bandwidth of the second microwave link is greater than the ratio of the available bandwidth of the first microwave link to the maximum bandwidth of the first microwave link.
  • a network device including:
  • a receiving module configured to receive bandwidth change information of the first microwave link sent by the first microwave device, where the bandwidth change information of the first microwave link includes an available bandwidth of the first microwave link;
  • a determining module configured to determine, according to a pre-configured priority of the first LSP and a pre-configured bandwidth switching threshold and a priority, for the first label switched path LSP passing through the first microwave link, determining the first The bandwidth switching threshold of the LSP;
  • a sending module configured to send, to the head node of the first LSP, a handover notification message of the first LSP, so that the head node of the first LSP is less than a bandwidth switching threshold of the first LSP And determining, according to the handover notification message of the first LSP, that the first LSP needs to be switched.
  • the handover notification message of the first LSP carries the available bandwidth of the current first microwave link, or the available bandwidth of the first microwave link and the first The maximum bandwidth of the microwave link.
  • the LSP when the available bandwidth of the LSP is smaller than the bandwidth switching threshold of the LSP, the LSP needs to be switched, and the service in the LSP is switched, where the LSP is processed.
  • the bandwidth switching threshold is determined according to the pre-configured priority of the LSP and the corresponding relationship between the pre-configured bandwidth switching threshold and the priority, and only part of the LSP can be switched, which can improve the utilization of the network bandwidth.
  • FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present invention.
  • FIG. 2 is a schematic flowchart of a method for path switching according to an embodiment of the present invention.
  • FIG. 3 is a schematic flowchart of a method for path switching according to another embodiment of the present invention.
  • FIG. 4 is a schematic block diagram of a network device in accordance with an embodiment of the present invention.
  • FIG. 5 is a schematic block diagram of a network device according to another embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a network device according to still another embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a network device according to still another embodiment of the present invention.
  • FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present invention.
  • the network device 110, the network device 120, the network device 130, and the network device 140 are respectively configured with two microwaves.
  • the backup device has the function of a Cell Site Gateway (CSG); the network device 150 and the network device 160 are respectively connected to a microwave device and have the function of an Aggregation Site Gateway (AGG).
  • CSG Cell Site Gateway
  • AAG Aggregation Site Gateway
  • Each network device transmits traffic through a microwave link between the microwave devices.
  • a traffic engineer (TE) tunnel is deployed on each network device. For each TE tunnel, two Label Switch Paths (LSPs) are generated.
  • TE traffic engineer
  • LSPs Label Switch Paths
  • LSP 181 network device 110 - network device 120 - network device 150
  • LSP 182 network device 110 - network device 130 - network device 140 - network device 160 - Network device 150
  • LSP 181 and LSP 182 can be backup LSPs. That is, one LSP is the primary LSP and the other LSP is the backup LSP.
  • LSP 181 is used as the primary LSP
  • LSP 182 is its backup LSP.
  • Different services are transmitted by using different TE tunnels. Specifically, one of the LSPs of the TE tunnel can be used for transmission. For example, the primary LSP is used for transmission.
  • the network device may be expressed as a router, a node, or a CSG/AGG, which is not limited by the present invention.
  • FIG. 2 shows a schematic flow diagram of a method 200 of path switching in accordance with an embodiment of the present invention.
  • the method 200 is performed by a head node of an LSP, such as the head node network device 120 of the LSP 191 of FIG. 1 or the head node network device 110 of the LSP 181.
  • the method 200 includes:
  • S220 Perform handover processing on the service in the first LSP.
  • the bandwidth switching threshold of the first LSP is determined according to the pre-configured priority of the first LSP and the corresponding relationship between the pre-configured bandwidth switching threshold and the priority. If the available bandwidth of the first LSP of the first LSP is smaller than the bandwidth switching threshold of the first LSP, the first LSP needs to be switched, and the service in the first LSP is switched. In this way, when the bandwidth of the first microwave link changes, only the LSPs whose bandwidth switching thresholds in all the LSPs that pass through the first microwave link are greater than the available bandwidth of the first microwave link are switched. All the LSPs of the first microwave link are switched, so that The first microwave link can continue to transmit a part of the service, so that the bandwidth resources of the network can be fully utilized.
  • the LSP needs to be switched, and the service in the LSP is switched.
  • the bandwidth switching threshold of the LSP is determined according to the pre-configured priority of the LSP and the corresponding relationship between the pre-configured bandwidth switching threshold and the priority, and only part of the LSP can be switched, which can improve the utilization of the network bandwidth.
  • determining that the first LSP needs to be switched includes:
  • bandwidth change information of the first microwave link where the bandwidth change information of the first microwave link includes an available bandwidth of the first microwave link
  • the available bandwidth of the first microwave link is smaller than the bandwidth switching threshold of the first LSP, it is determined that the first LSP needs to be switched.
  • the bandwidth change information of the microwave link is sent to the network device.
  • the bandwidth change information of the microwave link includes the available bandwidth of the current microwave link, and optionally, the maximum bandwidth of the microwave link.
  • the microwave device 122 in FIG. 1 detects that the microwave link 171 changes
  • the bandwidth change information of the microwave link 171 is transmitted to the network device 120.
  • the microwave device can transmit the bandwidth change information through 802.3ah or other protocols.
  • the network device can determine the bandwidth switching threshold of the LSP according to the pre-configured priority of the LSP and the pre-configured bandwidth switching threshold and the priority.
  • the priority of each LSP is pre-configured and the correspondence between the bandwidth switching threshold and the priority is pre-configured.
  • the priority of the LSP can be configured at the head node of the LSP.
  • the priority of the LSP from network device 110 to network device 150 is configured at network device 110.
  • the priority of the LSP is configured according to different services, for example, the priority of the LSP of the voice service is 10, the priority of the LSP of the data service is 8, and the priority of the LSP of the operation maintenance (OM) service is 15. Wait.
  • the priority of the LSP in the embodiment of the present invention may also be changed to the priority of the TE tunnel or the priority of the TE LSP, and these transformations are also included in the protection scope of the present invention.
  • the correspondence between the bandwidth switching threshold and the priority can be configured on each node of the LSP. Specifically, it can be configured on an interface where the network device is connected to the microwave device. For example, in FIG. 1, the following correspondence may be configured on the interface where the network device 120 is connected to the microwave device 122:
  • the network device After receiving the bandwidth change information of the microwave link, the network device determines the LSP according to the pre-configured priority of the LSP and the pre-configured bandwidth switching threshold and the priority of each LSP passing through the microwave link. Bandwidth switching threshold.
  • the bandwidth switching threshold is determined according to the priority for each LSP passing through the microwave link 171. Assuming that there are currently two LSPs passing through the microwave link 171, their priorities are 10 and 8, respectively, according to the above correspondence, it can be determined that their bandwidth switching thresholds are 600 and 700, respectively.
  • the network device After determining the bandwidth switching threshold of the LSP, the network device compares the bandwidth switching threshold of the LSP with the available bandwidth of the current microwave link, and selects an LSP whose current bandwidth of the microwave link is smaller than the bandwidth switching threshold of the LSP. If the network device is the head node of the LSP, it is determined that the LSP needs to be switched, and the service in the LSP is switched.
  • the available bandwidth of the current microwave link 171 included in the bandwidth change information of the microwave link 171 is 650. If the bandwidth threshold of the LSP 191 is 700, the LSP 191 needs to be switched. Since the network device 120 is the head node of the LSP 191, the network device 120 can perform handover processing on the traffic in the LSP 191.
  • the network device If the network device is an intermediate node of the LSP, the network device sends a handover notification message of the LSP to the head node of the LSP, and the head node determines, according to the handover notification message of the LSP, that the LSP needs to be switched.
  • the available bandwidth of the current microwave link 171 included in the bandwidth change information of the microwave link 171 is 650. If the bandwidth threshold of the LSP 181 is 700, since the network device 120 is an intermediate node of the LSP 181, the network device 120 can provide the network device to the network device. 110 sends LSP 181 switch Notification message. The network device 110 determines that the LSP 181 needs to be handed over according to the handover notification message of the LSP 181.
  • determining that the first LSP needs to be switched includes:
  • the bandwidth switching threshold of the LSP is determined by the intermediate node of the first LSP according to the pre-configured priority of the first LSP and the correspondence between the pre-configured bandwidth switching threshold and the priority.
  • the switching of the services in the first LSP by the head node of the first LSP may be performed in various manners, which are respectively described below.
  • the switching processing of the service in the first LSP includes:
  • the service in the first LSP is switched to the second LSP, where the second LSP is a backup LSP of the first LSP.
  • the second LSP is a backup LSP of the first LSP.
  • LSP 181 is the first LSP
  • LSP 182 is the second LSP
  • LSP 191 is the first LSP
  • LSP 192 is the second LSP.
  • the head node of the first LSP directly switches the service in the first LSP to the second LSP when determining that the first LSP needs to be handed over.
  • the network device 110 directly switches the traffic in the LSP 181 to the LSP 182 when it is determined that the LSP 181 needs to be handed over.
  • the switching processing of the service in the first LSP includes:
  • the switching notification message of the second LSP sent by the intermediate node of the second LSP is not received, and the bandwidth change information of the second microwave link of the second LSP sent by the second microwave device is not received, the first The service in the LSP is switched to the second LSP, where the second LSP is a backup LSP of the first LSP.
  • the first node of the first LSP when determining that the first LSP needs to be handed over, the first node of the first LSP first determines whether the second LSP also needs to be switched, such as determining a microwave link of the second LSP (indicated as the first Whether the second microwave link is normal (that is, whether the bandwidth changes), and then determining whether to switch the service in the first LSP to the second LSP.
  • the head node does not receive the bandwidth change information of the second microwave link of the second LSP sent by the second microwave device, indicating that the microwave link connected to the head node in the second LSP is normal.
  • the head node does not receive the handover notification message of the second LSP sent by the intermediate node of the second LSP, indicating that the intermediate node of the second LSP does not require handover.
  • the head node switches the service in the first LSP to the second LSP if the two conditions are met.
  • the network device 110 does not receive the bandwidth change information of the microwave link 173 sent by the microwave device 111, indicating that the microwave link 173 of the LSP 182 is normal; the network device 110 does not have A handover notification message of the LSP 182 sent by the network device 130 or the network device 140 is received, indicating that the network device 130 or the network device 140 does not require handover of the LSP 182. In this case, network device 110 switches the traffic in LSP 181 to LSP 182.
  • the network device 120 does not receive the bandwidth change information of the microwave link 172 sent by the microwave device 121, indicating that the microwave link 172 of the LSP 192 is normal; the network device 120 does not receive
  • the handover notification message to the LSP 192 sent by the network device 110, the network device 130, or the network device 140 indicates that the network device 110, the network device 130, or the network device 140 does not require handover of the LSP 192. In this case, network device 120 switches the traffic in LSP 191 to LSP 192.
  • the switching processing of the service in the first LSP includes:
  • the service in the first LSP is switched to the second LSP.
  • the head node may be in the When the available bandwidth of the second microwave link is greater than the available bandwidth of the first microwave link, the service in the first LSP is switched to the second LSP.
  • the head node obtains the available bandwidth of the first microwave link from the bandwidth change information of the first microwave link.
  • the handover notification message of the first LSP carries the available bandwidth of the first microwave link, and the head node obtains the available bandwidth of the first microwave link from the handover notification message of the first LSP.
  • the available bandwidth of the second microwave link of the second LSP is obtained from the handover notification message of the second LSP. Or if the head node receives the bandwidth change information of the second microwave link of the second LSP that is sent by the second microwave device, acquiring the current second microwave link from the bandwidth change information of the second microwave link. Available bandwidth. Then, the head node compares the available bandwidth of the current second microwave link with the current available bandwidth of the first microwave link, if the available bandwidth of the second microwave link is greater than the current first microwave link. If the available bandwidth is used, the service in the first LSP is switched to the second LSP.
  • the switching processing of the service in the first LSP includes:
  • the switch notification message of the second LSP obtains, by the switch notification message of the second LSP, the available bandwidth of the second microwave link of the second LSP and the second, if the switch notification message of the second LSP is sent by the intermediate node of the second LSP
  • the maximum bandwidth of the microwave link or, if the bandwidth change information of the second microwave link of the second LSP sent by the second microwave device is received, the current bandwidth is obtained from the bandwidth change information of the second microwave link.
  • the ratio of the available bandwidth of the second microwave link to the maximum bandwidth of the second microwave link is greater than the ratio of the available bandwidth of the first microwave link to the maximum bandwidth of the first microwave link.
  • the ratio of the available bandwidth of the second microwave link to the maximum bandwidth of the second microwave link is greater than the current first microwave.
  • the service in the first LSP is switched to the second LSP.
  • the head node obtains the current available bandwidth of the first microwave link and the maximum bandwidth of the first microwave link from the bandwidth change information of the first microwave link.
  • the switching notification message of the first LSP carries the current first microwave link.
  • the bandwidth and the maximum bandwidth of the first microwave link are used.
  • the head node obtains the current available bandwidth of the first microwave link and the maximum bandwidth of the first microwave link from the handover notification message of the first LSP.
  • the available bandwidth of the second microwave link of the second LSP is obtained from the handover notification message of the second LSP.
  • the maximum bandwidth of the second microwave link, or the bandwidth change from the second microwave link if the head node receives the bandwidth change information of the second microwave link of the second LSP sent by the second microwave device The information obtains the available bandwidth of the current second microwave link and the maximum bandwidth of the second microwave link. Then, the head node compares the ratio of the available bandwidth of the second microwave link to the maximum bandwidth of the second microwave link, and the current available bandwidth of the first microwave link and the maximum bandwidth of the first microwave link.
  • the handover notification message in the embodiment of the present invention may be implemented by using a Path Error packet of a Resource Reservation Protocol (RSVP).
  • RSVP Resource Reservation Protocol
  • the following format can be used:
  • IPv4 ErrorNode Address (4 bytes): The IPv4 address of the node that sent the message.
  • Flags (1 Byte): 0x01 indicates that tangent is required; 0x00 indicates that back-cutting is required; where tangent indicates that the service is switched from the LSP to the backup LSP, and the switchback indicates that the service is switched back to the LSP from the backup LSP.
  • Link Max BW Value (4 bytes): The maximum bandwidth of the link.
  • Link Available Value (4 bytes): The available bandwidth of the current link.
  • the path switching method of the embodiment of the present invention determines the bandwidth switching threshold of the LSP according to the pre-configured priority of the LSP and the pre-configured bandwidth switching threshold and the priority.
  • the available bandwidth of the current microwave link is smaller than the bandwidth of the LSP.
  • the method of path switching according to an embodiment of the present invention is described in detail above from the perspective of a head node of an LSP.
  • the method of path switching according to an embodiment of the present invention is described below from the perspective of an intermediate node of an LSP.
  • FIG. 3 shows a schematic flow chart of a method 300 for path switching according to another embodiment of the present invention.
  • the method 300 is performed by an intermediate node of the LSP. As shown in FIG. 3, the method 300 includes:
  • S310 Receive bandwidth change information of the first microwave link sent by the first microwave device, where the bandwidth change information of the first microwave link includes an available bandwidth of the first microwave link.
  • the path switching method of the embodiment of the present invention determines the bandwidth switching threshold of the LSP according to the pre-configured priority of the LSP and the pre-configured bandwidth switching threshold and the priority.
  • the available bandwidth of the current microwave link is smaller than the bandwidth of the LSP.
  • the handover notification message of the first LSP carries the available bandwidth of the first microwave link, or the available bandwidth of the first microwave link and the first microwave link. Maximum bandwidth.
  • the size of the sequence numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be taken to the embodiments of the present invention.
  • the implementation process constitutes any limitation.
  • a method of path switching according to an embodiment of the present invention is described in detail above, and a network device according to an embodiment of the present invention will be described below.
  • FIG. 4 shows a schematic block diagram of a network device 400 in accordance with an embodiment of the present invention.
  • the network device 400 includes:
  • the determining module 410 is configured to determine, when the available bandwidth of the first microwave link of the first label switching path LSP is smaller than the bandwidth switching threshold of the first LSP, where the first LSP needs to be switched, where the first LSP is
  • the bandwidth switching threshold is determined according to the pre-configured priority of the first LSP and the correspondence between the pre-configured bandwidth switching threshold and the priority;
  • the handover processing module 420 is configured to perform handover processing on the service in the first LSP.
  • the network device of the embodiment of the present invention determines that the LSP needs to be handed over, and performs handover processing on the service in the LSP, where the available bandwidth of the LSP is smaller than the bandwidth switching threshold of the LSP, where the LSP is switched.
  • the bandwidth switching threshold is determined according to the pre-configured priority of the LSP and the corresponding relationship between the pre-configured bandwidth switching threshold and the priority, and only part of the LSP can be switched, which can improve the utilization of the network bandwidth.
  • the network device 400 further includes:
  • a first receiving module configured to receive bandwidth change information of the first microwave link that is sent by the first microwave device, where the bandwidth change information of the first microwave link includes an available bandwidth of the first microwave link;
  • the determining module 410 is specifically configured to: determine, according to a pre-configured priority of the first LSP and a pre-configured bandwidth switching threshold and a priority, for the first LSP that passes the first microwave link, determine the first LSP If the bandwidth of the first LSP is less than the bandwidth switching threshold of the first LSP, it is determined that the first LSP needs to be switched.
  • the network device 400 further includes:
  • a second receiving module configured to receive a handover notification message of the first LSP sent by the intermediate node of the first LSP, where the handover notification message of the first LSP is used by the intermediate node of the first LSP in the first microwave chain
  • the bandwidth switching threshold of the first LSP is determined by the intermediate node of the first LSP according to the pre-configured priority of the first LSP and the pre-configured bandwidth switching threshold. The correspondence with the priority is determined;
  • the determining module 410 is specifically configured to determine that the first LSP needs to be switched according to the handover notification message of the first LSP.
  • the switching processing module 420 is specifically configured to switch the service in the first LSP to the second LSP, where the second LSP is a backup LSP of the first LSP.
  • the switching processing module 420 is specifically configured to: if the network device does not receive the handover notification message of the second LSP sent by the intermediate node of the second LSP, and does not receive the second microwave
  • the bandwidth change information of the second microwave link of the second LSP sent by the device is used to switch the service in the first LSP to the second LSP, where the second LSP is a backup LSP of the first LSP.
  • the switching processing module 420 is specifically configured to:
  • the available bandwidth of the second microwave link of the second LSP is obtained from the handover notification message of the second LSP. Or if the network device receives the bandwidth change information of the second microwave link of the second LSP that is sent by the second microwave device, acquiring the current second microwave link from the bandwidth change information of the second microwave link. Available bandwidth, wherein the second LSP is the The backup LSP of the first LSP;
  • the service in the first LSP is switched to the second LSP.
  • the bandwidth change information of the first microwave link further includes a maximum bandwidth of the first microwave link
  • the switching processing module 420 is specifically configured to:
  • the available bandwidth of the second microwave link of the second LSP is obtained from the handover notification message of the second LSP.
  • the maximum bandwidth of the second microwave link, or the bandwidth change from the second microwave link if the network device receives the bandwidth change information of the second microwave link of the second LSP sent by the second microwave device Acquiring the current available bandwidth of the second microwave link and the maximum bandwidth of the second microwave link, where the second LSP is a backup LSP of the first LSP;
  • the ratio of the available bandwidth of the second microwave link to the maximum bandwidth of the second microwave link is greater than the ratio of the available bandwidth of the first microwave link to the maximum bandwidth of the first microwave link.
  • the handover notification message of the first LSP carries the available bandwidth of the current first microwave link
  • the switching processing module 420 is specifically configured to:
  • the available bandwidth of the second microwave link of the second LSP is obtained from the handover notification message of the second LSP. Or if the network device receives the bandwidth change information of the second microwave link of the second LSP that is sent by the second microwave device, acquiring the current second microwave link from the bandwidth change information of the second microwave link.
  • the service in the first LSP is switched to the second LSP.
  • the handover notification message of the first LSP carries the available bandwidth of the first microwave link and the maximum bandwidth of the first microwave link;
  • the switching processing module 420 is specifically configured to:
  • the available bandwidth of the second microwave link of the second LSP is obtained from the handover notification message of the second LSP.
  • the maximum bandwidth of the second microwave link, or the bandwidth change from the second microwave link if the network device receives the bandwidth change information of the second microwave link of the second LSP sent by the second microwave device Acquiring the current available bandwidth of the second microwave link and the maximum bandwidth of the second microwave link, where the second LSP is a backup LSP of the first LSP;
  • the ratio of the available bandwidth of the second microwave link to the maximum bandwidth of the second microwave link is greater than the ratio of the available bandwidth of the first microwave link to the maximum bandwidth of the first microwave link.
  • the network device 400 may correspond to an execution body of the method 200 of path switching according to an embodiment of the present invention, and the above and other operations and/or functions of the respective modules in the network device 400 respectively implement the foregoing respective methods
  • the corresponding process for the sake of brevity, will not be described here.
  • FIG. 5 shows a schematic block diagram of a network device 500 in accordance with an embodiment of the present invention.
  • the network device 500 includes:
  • the receiving module 510 is configured to receive bandwidth change information of the first microwave link that is sent by the first microwave device, where the bandwidth change information of the first microwave link includes an available bandwidth of the first microwave link.
  • the determining module 520 is configured to determine, according to a pre-configured priority of the first LSP and a pre-configured bandwidth switching threshold and a priority, for the first label switched path LSP that passes through the first microwave link.
  • the bandwidth switching threshold of an LSP is configured to determine, according to a pre-configured priority of the first LSP and a pre-configured bandwidth switching threshold and a priority, for the first label switched path LSP that passes through the first microwave link.
  • the sending module 530 is configured to: if the available bandwidth of the first microwave link is smaller than the bandwidth switching threshold of the first LSP, send a handover notification message of the first LSP to the head node of the first LSP, so that the header The node determines, according to the handover notification message of the first LSP, that the first LSP needs to be switched.
  • the handover notification message of the first LSP carries the available bandwidth of the first microwave link, or the available bandwidth of the first microwave link and the first microwave link. Maximum bandwidth.
  • Network device 500 in accordance with an embodiment of the present invention may correspond to a path in accordance with an embodiment of the present invention
  • the above-mentioned and other operations and/or functions of the respective modules in the network device 500 are respectively implemented in order to implement the respective processes of the foregoing various methods, and are not described herein again for brevity.
  • the network device of the embodiment of the present invention determines the bandwidth switching threshold of the LSP according to the pre-configured priority of the LSP and the pre-configured bandwidth switching threshold and the priority, and the available bandwidth of the current microwave link is smaller than the bandwidth switching gate of the LSP.
  • the head node of the LSP is notified to switch the services in the LSP, so that different services can be transmitted in different microwave links, thereby improving the utilization of the network bandwidth.
  • FIG. 6 shows a structure of a network device according to still another embodiment of the present invention, including at least one processor 602 (for example, a CPU), at least one network interface 605 or other communication interface, a memory 606, and at least one communication bus 603. Used to implement connection communication between these components.
  • the processor 602 is configured to execute executable modules, such as computer programs, stored in the memory 606.
  • the memory 606 may include a high speed random access memory (RAM), and may also include a non-volatile memory such as at least one disk memory.
  • a communication connection with at least one other network element is achieved by at least one network interface 605 (which may be wired or wireless).
  • the memory 606 stores a program 6061
  • the processor 602 executes the program 6061 for performing the following operations:
  • the bandwidth switching threshold of the first LSP is according to the Determining the pre-configured priority of the first LSP and the correspondence between the pre-configured bandwidth switching threshold and the priority;
  • the service in the first LSP is switched.
  • the processor 602 is specifically configured to:
  • the bandwidth switching threshold of the first LSP Determining the bandwidth switching threshold of the first LSP according to the pre-configured priority of the first LSP and the pre-configured bandwidth switching threshold and the priority of the first LSP. Currently, the available bandwidth of the first microwave link is smaller than the bandwidth of the first LSP. If the threshold is switched, it is determined that the first LSP needs to be switched.
  • the processor 602 is specifically configured to:
  • the processor 602 is specifically configured to: switch the service in the first LSP to the second LSP, where the second LSP is a backup LSP of the first LSP.
  • the processor 602 is specifically configured to: if the network device does not receive the handover notification message of the second LSP sent by the intermediate node of the second LSP, and does not receive the second LSP sent by the second microwave device The bandwidth change information of the second LSP is switched to the second LSP, where the second LSP is a backup LSP of the first LSP.
  • the processor 602 is specifically configured to:
  • the available bandwidth of the second microwave link of the second LSP is obtained from the handover notification message of the second LSP. Or if the network device receives the bandwidth change information of the second microwave link of the second LSP that is sent by the second microwave device, acquiring the current second microwave link from the bandwidth change information of the second microwave link.
  • the service in the first LSP is switched to the second LSP.
  • the bandwidth change information of the first microwave link further includes a maximum bandwidth of the first microwave link.
  • the processor 602 is specifically configured to:
  • the available bandwidth of the second microwave link of the second LSP is obtained from the handover notification message of the second LSP.
  • the maximum bandwidth of the second microwave link or if the network device receives the bandwidth change signal of the second microwave link of the second LSP sent by the second microwave device Obtaining, from the bandwidth change information of the second microwave link, the available bandwidth of the second microwave link and the maximum bandwidth of the second microwave link, where the second LSP is a backup of the first LSP LSP;
  • the ratio of the available bandwidth of the second microwave link to the maximum bandwidth of the second microwave link is greater than the ratio of the available bandwidth of the first microwave link to the maximum bandwidth of the first microwave link.
  • the handover notification message of the first LSP carries the available bandwidth of the current first microwave link
  • the processor 602 is specifically configured to:
  • the available bandwidth of the second microwave link of the second LSP is obtained from the handover notification message of the second LSP. Or if the network device receives the bandwidth change information of the second microwave link of the second LSP that is sent by the second microwave device, acquiring the current second microwave link from the bandwidth change information of the second microwave link.
  • the service in the first LSP is switched to the second LSP.
  • the handover notification message of the first LSP carries the available bandwidth of the first microwave link and the maximum bandwidth of the first microwave link.
  • the processor 602 is specifically configured to:
  • the available bandwidth of the second microwave link of the second LSP is obtained from the handover notification message of the second LSP.
  • the maximum bandwidth of the second microwave link, or the bandwidth change from the second microwave link if the network device receives the bandwidth change information of the second microwave link of the second LSP sent by the second microwave device Acquiring the current available bandwidth of the second microwave link and the maximum bandwidth of the second microwave link, where the second LSP is a backup LSP of the first LSP;
  • the ratio of the available bandwidth of the second microwave link to the maximum bandwidth of the second microwave link is greater than the ratio of the available bandwidth of the first microwave link to the maximum bandwidth of the first microwave link.
  • the LSP when the available bandwidth of the LSP is smaller than the bandwidth switching threshold of the LSP, the LSP needs to be switched, and the LSP is in the LSP.
  • the service performs handover processing, where the bandwidth switching threshold of the LSP is determined according to the pre-configured priority of the LSP and the pre-configured bandwidth switching threshold and the priority, and only part of the LSP can be switched, and the network bandwidth can be improved. Utilization.
  • FIG. 7 shows a structure of a network device according to still another embodiment of the present invention, including at least one processor 702 (for example, a CPU), at least one network interface 705 or other communication interface, a memory 706, and at least one communication bus 703. Used to implement connection communication between these components.
  • the processor 702 is configured to execute executable modules, such as computer programs, stored in the memory 706.
  • the memory 706 may include a high speed random access memory (RAM), and may also include a non-volatile memory such as at least one disk memory.
  • a communication connection with at least one other network element is achieved by at least one network interface 705 (which may be wired or wireless).
  • the memory 706 stores a program 7061, and the processor 702 executes the program 7061 for performing the following operations:
  • the available bandwidth of the first RRC link is smaller than the bandwidth switching threshold of the first LSP, send a handover notification message of the first LSP to the head node of the first LSP through the network interface 705, so that the The handover notification message of the first LSP determines that the first LSP needs to be switched.
  • the handover notification message of the first LSP carries the available bandwidth of the first microwave link, or the available bandwidth of the first microwave link and the maximum bandwidth of the first microwave link.
  • the embodiments of the present invention are based on The pre-configured priority of the LSP and the pre-configured bandwidth switching threshold and the priority are used to determine the bandwidth switching threshold of the LSP.
  • the available bandwidth of the current microwave link is smaller than the bandwidth switching threshold of the LSP, the head node of the LSP is notified to the LSP.
  • the switching service in the service can make different services transmit in different microwave links, thereby improving the utilization of network bandwidth.
  • the term "and/or” is merely an association relationship describing an associated object, indicating that there may be three relationships.
  • a and/or B may indicate that A exists separately, and A and B exist simultaneously, and B cases exist alone.
  • the character "/" in this article generally indicates that the contextual object is an "or" relationship.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, or an electrical, mechanical or other form of connection.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.
  • each functional unit in various embodiments of the present invention may be integrated in one processing unit
  • each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the technical solution of the present invention contributes in essence or to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

Abstract

La présente invention concerne un procédé de commutation de chemin et un périphérique de réseau. Le procédé comprend les étapes suivantes : dans le cas où la largeur de bande disponible d'une première liaison à hyperfréquences d'un premier LSP est inférieure au seuil de commutation de largeur de bande du premier LSP, détermination que la commutation du premier LSP est nécessaire, et le seuil de commutation de largeur de bande du premier LSP est déterminé conformément à la priorité préconfigurée du premier LSP et à la correspondance du seuil de commutation de largeur de bande préconfiguré et de la priorité ; exécution du traitement de commutation pour les services du premier LSP. Le procédé de commutation de chemin et le périphérique de réseau selon les modes de réalisation de la présente invention permettent d'augmenter l'utilisation de la largeur de bande du réseau.
PCT/CN2015/077386 2014-06-30 2015-04-24 Procédé de commutation de chemin et périphérique de réseau WO2016000481A1 (fr)

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CN111949489B (zh) * 2020-08-14 2022-04-05 珠海格力电器股份有限公司 终端网速的调整方法及调整装置、电子设备
CN113347083B (zh) * 2021-05-31 2022-09-23 北京字跳网络技术有限公司 网络路径确定及切换方法、装置、设备、介质及程序产品

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