WO2011044835A1 - 实现路由优化的方法及接入路由器 - Google Patents
实现路由优化的方法及接入路由器 Download PDFInfo
- Publication number
- WO2011044835A1 WO2011044835A1 PCT/CN2010/077685 CN2010077685W WO2011044835A1 WO 2011044835 A1 WO2011044835 A1 WO 2011044835A1 CN 2010077685 W CN2010077685 W CN 2010077685W WO 2011044835 A1 WO2011044835 A1 WO 2011044835A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- node
- destination
- source
- address
- message
- Prior art date
Links
- 238000005457 optimization Methods 0.000 title claims abstract description 158
- 238000000034 method Methods 0.000 title claims abstract description 62
- 238000012360 testing method Methods 0.000 claims abstract description 101
- 230000000977 initiatory effect Effects 0.000 claims abstract description 62
- 238000012790 confirmation Methods 0.000 claims description 14
- 230000004044 response Effects 0.000 claims description 11
- 239000003795 chemical substances by application Substances 0.000 description 44
- 230000006870 function Effects 0.000 description 11
- 230000008569 process Effects 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 8
- 238000004891 communication Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
- H04W8/08—Mobility data transfer
- H04W8/082—Mobility data transfer for traffic bypassing of mobility servers, e.g. location registers, home PLMNs or home agents
-
- 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
- H04L45/02—Topology update or discovery
- H04L45/04—Interdomain routing, e.g. hierarchical routing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1083—In-session procedures
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/80—Responding to QoS
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
- H04W40/248—Connectivity information update
Definitions
- the present invention relates to the field of wireless communications, and in particular, to a method for implementing route optimization and an access router. Background technique
- IPv6 is a standard protocol for network interconnection developed by the Internet Engineering Task Force (IETF). IPv6 can solve the problem of poor support for address shortage, mobility, and security in the original IPv4 technology. After IPv6 technology, the IETF further extended the IPv6 protocol and developed a mobile IPv6 technology standard that supports mobility management. The mobile IPv6 technology standard supports mobile IP nodes to achieve free mobility while maintaining session connectivity, greatly improving user usage. The convenience of the IP protocol for communication and conversation.
- IETF Internet Engineering Task Force
- the home agent is used as the mobility management anchor of the mobile node.
- the home agent is a router with mobility management capabilities.
- the mobile node registers with the home agent, and the home agent maintains the binding between the home address and the care-of address. Any IP packet sent to the mobile node's home address can be forwarded to the mobile node via the home agent using the care-of address.
- the mobile node moves to a new location, the mobile node only needs to update the saved care-of address to the home agent, so that the mobile node can move freely.
- the home address refers to the IP address assigned to the mobile node for a long time. The home address remains unchanged regardless of how the mobile node access point changes.
- the care-of address refers to when the mobile node does not send the data packet to the mobile node when the home node is not in the home network.
- the tunnel endpoint address to the mobile node is called the care-of address;
- the home agent is a router located on the mobile node's home network. When the mobile node leaves the home network, the router maintains The current location information of the mobile node, and the information sent to the mobile node is forwarded to the mobile node through the tunnel.
- Route Optimization allows mobile IP nodes to IP to the peer IP node, that is, IP with mobile IP
- the other party's IP node of the session performs address binding; that is, on the peer IP node, the home address and the care-of address of the mobile IP node are saved, and the binding relationship between the two is performed.
- the IETF specifies the extensions that the mobile IP node and the peer IP node must support. Only after satisfying these specific functions, the mobile IP node can implement route optimization with the peer IP node. However, since the capability of the peer IP node does not necessarily support route optimization, the route optimization may not be implemented. Summary of the invention
- the embodiment of the invention provides a method and a device for implementing route optimization, so that the route optimization can still be implemented in the case that the destination IP node on the receiving route optimization does not support the route optimization in the mobile IPv6 protocol.
- An embodiment of the present invention provides a method for implementing route optimization, including:
- the access router receives the test initiation message sent by the source IP node that initiates route optimization
- route optimization between the source IP node and the destination IP node is established.
- the embodiment of the present invention also provides an access router, which is connected to a source IP node that initiates route optimization.
- the route optimization between the destination IP nodes includes:
- a receiving unit configured to receive the test initiation message sent by the source IP node that initiates route optimization, and send the test initiation message to the destination node determining unit;
- a destination node determining unit configured to determine, according to the test initiation message sent by the receiving unit, the route optimized destination IP node
- a route optimization establishing unit configured to: after the destination node determining unit determines the destination IP node of the route optimization, perform route optimization between the source IP node and the destination IP node instead of the destination IP node.
- the route optimization is implemented by using the access router connected to the destination IP node instead of the destination node, so that the source mobile IP node can bypass the home agent and the destination IP node to communicate, and the destination IP node sends the
- the IP packets of the source IP node can also be forwarded without the home agent of the source IP node, thereby implementing route optimization and extending the scope of route optimization in Mobile IPv6.
- the destination IP node side that can receive the route optimization can optimize the route through the access router without supporting the route optimization in the mobile IPv6 protocol.
- FIG. 1 is a flowchart of a method for implementing route optimization according to an embodiment of the present invention
- FIG. 2 is a flowchart of still another method for implementing route optimization according to an embodiment of the present invention
- FIG. 4 is a schematic structural diagram of still another access router according to an embodiment of the present invention. detailed description
- a method for implementing route optimization according to an embodiment of the present invention includes:
- Step 101 Receive a test initiation message sent by a source IP node that initiates route optimization.
- the main body performing the receiving step is an access router to which the destination IP node that the source IP node wishes to implement route optimization is connected.
- the test initiation message includes a home test initiation message and/or a handover test initiation message, that is, the access router may simultaneously receive the home test initiation message and the handover test initiation message, and separately process the two test initiation messages, or may separately receive The above two test initiation messages are processed separately.
- the home test initiation message is sent by the source IP node to the destination IP node through the home agent, and the handover test initiation message is sent by the source IP node to the destination IP node, and the two test initiation messages can all be IP packets.
- the access router may determine that the IP packet is a home test initiation message or a handover test initiation message according to the header field and the extension header field of the IP packet.
- the specific method for determining the IP packet type according to the header field and the extended header field of the IP packet may include: after receiving the IP packet, the access router checks the header field (IPv6 Header) and the extended header field (IPv6) of the IP packet. Extension Header ) , check if the Next Header field in these two fields contains a 135 type Mobility Header. If the IP packet contains the next header with a value of 135, it indicates that the next extended header of the IP packet is a mobility extension header for mobility management. Otherwise, the IP packet is unrelated to mobility management. The message, that is, the message that is not related to route optimization.
- the access router further checks the value of the mobility header type (MH Type) field in the mobility extension header, for example: if the value of the mobility header type field is 1, it indicates The IP packet is a home test initiation message. If the value of the mobility header type field is 2, the IP packet is a handover test initiation message. If the value of the mobility header type field is 5, the IP packet is sent. Update the message for binding.
- MH Type mobility header type
- Step 102 Determine a destination IP node of the route optimization according to the foregoing test initiation message.
- the access router may determine the destination IP node for route optimization according to the destination IP address included in the test initiation message.
- the policy configuration information is root.
- the policy configuration information is used to indicate, respectively, that the different IP nodes need to replace the IP node to implement route optimization, and after step 102, the method may include: The policy configuration data and the destination IP node determined by the above-mentioned route optimization determine that the route optimization between the source IP node and the destination IP node needs to be established instead of the destination IP node.
- the access router can also be configured to implement route optimization for the connected IP node by default, and does not need to judge according to different destination IP nodes, the above-mentioned policy configuration information and the destination IP node determine that it is necessary to establish a route instead of the destination IP node.
- the optimized steps are optional steps and are not essential technical features in the embodiments of the present invention.
- Step 103 Perform route optimization between the source IP node and the destination IP node instead of the destination IP node.
- the access router sends a home test message to the source IP node through the home agent of the source IP node, and sends a handover test message to the source IP node; after that, the source IP is received.
- the binding update message sent by the node after receiving the home test message and the handover test message; storing and binding the home address and the care-of address carried in the binding update message and the IP address of the destination IP node, that is, establishing a home address, Binding association between the care-of address and the IP address of the destination IP node; returning a binding confirmation message to the source IP node.
- the source IP address of the binding confirmation message is the IP address of the destination IP node or the IP address of the access router itself.
- the binding confirmation message carries an indication of proxy confirmation or an indication of mobile network confirmation for informing the source
- the IP node binds the acknowledgement message to the access router instead of the response message returned by the destination IP node. So far, the access router replaces the destination IP node to establish route optimization between the source IP node and the destination IP node.
- the route optimization of the access router proxy may result in
- the length of the IP packet changes, and the access router can instruct the destination IP node to adjust the value of the Minimum Transmission Unit (MTU) so that the access router replaces the home address with the care-of address when performing route optimization and forwarding IP packets.
- MTU Minimum Transmission Unit
- the address is used as the destination IP address of the IP packet header and/or the home address is included in the extension header of the IP packet, and does not exceed the MTU limit.
- the access router saves and binds the home address and the care-of address carried in the binding update message and the IP address of the destination IP node, so that the access router forwards the foregoing destination.
- the IP node sends the IP service data packet to the source IP node, for example, the first IP packet
- the home address of the source IP node that is used may be replaced by the care-of address of the source IP node in the binding association as the first IP packet.
- a destination IP address in an IP packet header field, and the first IP packet is sent to the care-of address of the source IP address, so that all IP service data packets are IP-routed according to the care-of address.
- the IP packet sent by the destination IP node to the source IP node does not need to be forwarded by the home agent of the source IP node, and the route optimization is implemented.
- the first IP packet is used to refer to any IP packet sent by the destination IP node to the source IP node after the route optimization is established.
- the name "first IP packet" itself does not limit the present invention.
- the source IP node can directly perform IP routing according to the IP address of the destination IP node, and no longer need to use the home agent for forwarding.
- the method for providing the route optimization in the mobile IPv6 is extended by the method provided in this embodiment.
- the destination IP address side that can receive the route optimization can still implement route optimization without supporting the route optimization in the mobile IPv6 protocol.
- the destination IP node can be any IPv6 node that supports the basic IPv6 protocol, and can be a fixed terminal using a wired connection or a mobile terminal using a wireless connection. As shown in FIG.
- Step 201 A source IP node that initiates route optimization sends a Home Test Init message to a home agent, where The source IP address of the message is the home address of the source IP node, and the destination IP address is the IP address of the destination IP node optimized by the route.
- the source IP node refers to an IP node that initiates the route optimization in the process of implementing route optimization; the destination IP node refers to a destination IP node that the source IP node wishes to implement route optimization in the process of implementing route optimization.
- the source IP node supports the route optimization function; the destination IP node can support the route optimization function or the route optimization function. If the destination IP node supports the route optimization function, you can use the function provided by the destination IP node to establish route optimization, or you can use the function provided by the access router to establish route optimization.
- the access router also establishes route optimization according to the method provided by the embodiment of the present invention.
- Step 202 The home agent forwards the home test initiation message to the destination IP node, and the message is sent to the destination IP node according to the destination IP address of the home test initiation message.
- the access router connected to the destination IP node is the last hop network device that the destination IP node must receive IP packets from the IP network, the access router can receive the sent IP address to the destination IP node. IP packets, such as the above home test launch message.
- the home agent In the process that the home agent forwards the home test initiation message to the destination IP node, the home agent sends the home test initiation message to the next hop router on the IP route of the destination IP node by searching for the saved IP routing table. Internet equipment. That is, the home agent can send the above home test message to the access router connected to the destination IP node by one-hop or multi-hop routing.
- Step 203 The source IP node sends a Care-of Test Init to the destination IP node, where the source IP address of the message is the care-of address of the source IP node, and the destination IP address is the IP address of the destination IP node.
- step 203 there is no necessary sequence between step 203 and steps 201 and 202.
- Step 204 The access router connected to the destination IP node receives the test initiation message (including the home test initiation message and/or the handover test initiation message) sent to the destination IP node, and determines according to the destination IP address included in the test initiation message.
- the source IP node wants to implement the route optimization destination IP node.
- the route optimization agent replaces the destination IP node to complete the processing of these test initiation messages. For the specific processing procedure, refer to the subsequent steps.
- the access router locally saves the policy configuration information
- the policy configuration information is separately set according to different IP nodes connected to the access router, and the policy configuration information is used to indicate, respectively, whether the different IP nodes need to be replaced.
- the method further includes: the access router determining, according to the local policy configuration data and the determined route optimized destination IP node, that the The destination IP node establishes route optimization between the source IP node and the destination IP node.
- the access router can also be configured to implement route optimization for the connected IP node by default, and does not need to judge according to different destination IP nodes, the above-mentioned policy configuration information and the destination IP node determine that it is necessary to establish a route instead of the destination IP node.
- the optimized steps are optional steps and are not essential technical features in the embodiments of the present invention.
- the foregoing policy configuration data is an attribute data newly added to the access router in the embodiment of the present invention.
- the policy represented by the policy configuration data includes: when the IP node connected to the access router is used as a route optimization destination, and When the ingress router receives the home test initiation message, the handover test initiation message, or the binding update message sent to the destination IP node, whether the access router needs to establish route optimization instead of the destination IP node. After the access router replaces the IP node to establish route optimization, the route optimization method can be applied to the home agent of the source IP node in the data transmission.
- the above policy configuration data may include a policy configuration attribute: "Replace the destination IP node to participate in route optimization", for example, the value of the policy configuration attribute may be set to "1" or "0", and when the attribute value is "1", the access router The method proposed by the present invention is required to perform the route optimization instead of the destination IP node. When the attribute value is "0", the access router can ignore the method proposed by the embodiment of the present invention and work according to the general procedure. There are many ways to set the value of the above policy configuration attribute. This embodiment only uses “0" and "1" as an example. The name of the above policy configuration attribute can also be replaced by other names. Here, only the "replacement of the destination IP node to complete the route optimization" is taken as an example. The meaning of participating in the route optimization may include establishing route optimization and applying route optimization.
- the test initiation message is sent to the access router connected to the destination IP node in the form of an IP packet.
- the access router can determine the type of the message according to the header field and the extended header field of the IP packet, and confirm whether the IP packet is Initiate a message for testing.
- the access router only needs to perform the function of forwarding IP packets according to the destination IP address of the IP packet. In this embodiment, the access router also needs to analyze the type of the IP packet, and initiates the test. The message is processed.
- Step 205 The source IP address of the home test information sent by the access router connected to the destination IP node to the source IP node is the IP address of the destination IP node, and the destination IP address is the home address of the source IP node.
- the access router sends the home test message to the next hop router on the IP route of the source IP node by searching the IP routing table saved by itself. Or network equipment. That is, the access router can send the above home test message to the source IP node through one-hop or multi-hop routing.
- Step 206 After receiving the home test message, the home agent of the source IP node forwards the home test message to the source IP node.
- Step 207 The access router connected to the destination IP node sends a Care-of Test to the source IP node, where the source IP address of the message is the IP address of the destination IP node, and the destination IP address is the care-of address of the source IP node. .
- the access router may receive the home test initiation message and the handover test initiation message at the same time and perform the processing according to the method provided in the foregoing step 204.
- the access router may also receive the foregoing.
- One of the two test initiation messages for example, first receiving the home test initiation message transmitted in step 201 and step 202, and then performing the step 204 of the above embodiment to process the home test initiation message, and then performing steps 205, 206, ie, Sending a home test message corresponding to the home test initiation message, after which the access router receives another one of the two test initiation messages, such as the handover test initiation message in step 203, and then sequentially performs steps 204, 207, that is, sending A care-of test message corresponding to the handover test initiation message.
- the steps in the process of the embodiment of the present invention may also have other adjustment manners, and details are not described herein again.
- Step 208 After receiving the home test and the handover test message, the source IP node sends a binding update message (Binding Update) to the destination IP node, where the source IP address of the message is the care-of address of the source IP node, and the destination IP address is the destination IP node.
- the IP address, the message also contains information such as the home address of the active IP node.
- the binding update message may be sent to the destination IP node in the form of an IP packet, the method in which the access router connected to the destination IP node determines the IP packet type, and the access router in step 204 determines whether the IP packet is a test initiator. The method of the message is roughly the same.
- Step 209 After receiving the binding update message, the access router connected to the destination IP node saves the home address and the handover of the source IP node included in the binding update message in the data table corresponding to the locally saved destination IP node. Address, and establish a binding association between the home address and the care-of address and the IP address of the destination IP node, and then return a Binding Acknowledgement message to the source IP node, where the source IP address of the message is the destination IP address. The IP address of the node or the IP address of the access router itself. The destination IP address is the care-of address of the source IP node. At this point, the access router replaces the destination IP node to establish route optimization between the source IP node and the destination IP node. After receiving the binding acknowledgement message, the source IP node can directly route the IP data sent to the destination IP node according to the IP address of the destination IP node, and no longer need to use the home agent for forwarding.
- the access router may further include: determining, by using the policy configuration data, that the access router needs to establish route optimization for the destination IP node.
- the determination method is substantially the same as the method described in step 204, and details are not described herein again.
- the foregoing saves the address and establishes the binding association.
- the purpose is to apply the route optimization in the data transmission process between the subsequent destination IP node and the source IP node.
- For the specific method of applying the route optimization refer to step 210.
- the destination IP node may not support the route optimization in the mobile IPv6 protocol, but access the IP network by connecting the mobile router.
- the mobile router is the implementation.
- the destination IP node may not be supported. Routing optimization in the mobile IPv6 protocol, but the access router to which the destination IP node is connected can support the proxy mobile IPv6 protocol.
- the access router is called a mobile access gateway, and the destination IP node can connect to the mobile access gateway. Accessing to the IP network, and on the IP path between the source IP node and the destination IP node, there is also a local mobility anchor of the destination IP node.
- the binding confirmation message carries the indication information, and is used to notify the source IP node that the binding confirmation message is a response message returned by the access router instead of the destination IP node.
- the manner of carrying the foregoing indication information includes: the access route is added to the binding acknowledgement message, and a new identifier may be added to the binding acknowledgement message format in the prior art. For example, if the access router is the mobile router, the The mobile router indication information or the mobile network indication information is added to the binding acknowledgement message. If the access router is the mobile access gateway, the mobile access gateway indication information or the proxy mobile IP indication information may be added in the binding acknowledgement message.
- Step 210 The route optimization established between the source IP node and the destination IP node may be applied in the data transmission process: the data transmission between the source IP node and the destination IP node is connected to the source IP node and the destination IP node. The router and destination IP are forwarded without going through the home agent of the source IP node.
- the access router proxy route optimization causes the IP packet length to change
- the access router may instruct the destination IP node to adjust the MTU value, so that the access router is routing.
- the care-of address is used instead of the home address as the destination IP address of the IP header, and the home address is included in the extension header of the IP document, which does not exceed the MTU limit.
- the home IP address of the source IP node is used as the destination IP address of the first IP packet, and the first IP packet is first.
- the access router After receiving the first IP packet sent by the destination IP node to the source IP node, the access router according to the destination IP address of the first IP packet, that is, the home address of the source IP node, and the first IP packet
- the source IP address that is, the IP address of the destination IP node, determines whether the destination IP address of the first IP packet exists and the first IP address.
- Route optimization between the source IP addresses of the packets that is, route optimization between the source IP node and the destination IP node.
- the specific determining method includes: checking whether there is a binding association between the destination IP address and the source IP address; in the case that there is route optimization, the access router replaces the original address of the source IP node saved in the binding association.
- the home IP address of the source IP node is used as the destination IP address in the first IP packet header field, and the IP address table is searched according to the destination IP address of the source IP address.
- the first IP packet is sent to the next IP packet.
- One hop IP device One hop IP device.
- the first IP packet sent by the destination IP node to the source IP node may be IP routed according to the care-of address of the source IP node, so the home agent of the source IP node is not required to be sent to the source IP node.
- the access router may include the home address of the source IP node in the extension header of the first IP packet,
- the first IP packet of the source IP node is a route-optimized IP packet.
- the IP packet is originally sent to the home address of the source IP node.
- the access router may also perform the source IP address replacement on the service data packet sent by the source IP node to the destination IP node, such as the second IP packet, that is, the second IP packet in the second IP packet.
- the source IP address is replaced by the home IP address of the source IP node and the home IP address of the source IP node, and the second IP packet after the address replacement is sent to the destination IP node; so that the source IP node sends the second IP address to the destination IP node.
- the message may not pass through the home agent of the source IP node.
- the source mobile IP node can bypass the home agent and the destination IP node to communicate, and the IP packet sent by the destination IP node to the source IP node can also no longer pass through the home agent of the source IP node. Forwarding, thereby implementing route optimization, reducing forwarding once in each direction of data transmission, thereby reducing communication delay, reducing network load, and even with the destination IP node in case of failure of the home agent Performing normal communication enhances communication reliability. Moreover, since the home agent and the mobile node are served one-to-many, the home agent may become a key bottleneck node in the case of a large number of mobile nodes, and the method provided by the embodiment of the present invention can effectively avoid the home agent load. The fault is too high.
- the extension of the access router function in the embodiment of the present invention has the advantages of being convenient, fast, low-cost, and easy to implement.
- FIG. 3 is a schematic diagram of an access router 3 capable of implementing all the methods provided by the foregoing method embodiments, which is connected between a source IP node that initiates route optimization and a destination IP node that is optimized for routing.
- the access router includes: a receiving unit 31, a destination node determining unit 32, and a route optimization establishing unit 33. among them,
- the receiving unit 31 is configured to receive a test initiation message sent by the source IP node that initiates route optimization, and send the test initiation message to the destination node determining unit 32.
- the destination node determining unit 32 is configured to determine the route optimized destination IP node according to the test initiation message sent by the receiving unit 31.
- the route optimization establishing unit 33 is configured to: after the destination node determining unit 32 determines the destination IP node of the route optimization, replace the destination IP node to establish route optimization between the source IP node and the destination IP node.
- the above test initiation message includes a home test initiation message and/or a handover test initiation message.
- the access router 3 may further include:
- the policy configuration unit 36 is configured to: after the destination node determining unit 32 determines the route optimized destination IP node, search for the policy configuration data corresponding to the locally saved destination IP node, and determine that the destination IP node needs to be replaced by the destination IP node. Route optimization between IP nodes, indicating that route optimization establishing unit 33 establishes route optimization instead of the destination IP node;
- the route optimization establishing unit 33 is further configured to: after the destination node determining unit 32 determines the route optimized destination IP node, and after receiving the indication of the policy configuration unit 36, replace the destination IP node to establish the source IP node and the destination. Route optimization between IP nodes.
- the receiving unit 31 may further include a receiving subunit 311 and a message type determining subunit 312, where:
- the receiving subunit 311 is configured to receive the IP packet sent by the source IP node, and send the IP packet to the message type determining subunit 312.
- the message type determining sub-unit 312 is configured to determine, according to the header field and the extended header field of the IP packet sent by the receiving sub-unit 311, that the IP packet is a test initiation message, and send the test initiation message to the destination node determining unit 32.
- the above route optimization establishing unit 33 may include a response subunit 331 and a binding update subunit 332, where:
- the response subunit 331 is configured to: after the destination node determining unit 32 determines the route optimized destination IP node, send a home test message to the source IP node by using the home agent of the source IP node, and send a handover test message to the source IP node;
- the source IP address of the handover test message can be set to the IP address of the destination IP node, and the destination IP address is set to the care-of address of the source IP node.
- the response subunit 331 is further configured to: after the destination node determining unit 32 determines the route optimized destination IP node, After the indication of the policy configuration unit 36, the home agent message is sent to the source IP node by the home agent of the source IP node, and the handover test message is sent to the source IP node; wherein the source IP address of the handover test message can be set as the destination IP address.
- the IP address of the node and the destination IP address are set to the care-of address of the source IP node.
- the binding update sub-unit 332 is configured to receive a binding update message sent by the source IP node after receiving the home test message and the handover test message fed back by the response sub-unit 331, and save and bind the binding update message. Carrying the home address and the care-of address and the IP address of the destination IP node, and returning a binding confirmation message to the source IP node.
- binding update subunit 332 may include an address setting module 3321 and an indication plus Carrying module 3322, wherein:
- the address setting module 3321 is configured to set the source IP address of the binding acknowledgement message to the destination IP address in the binding update message, or the access router itself, before the binding update subunit 332 returns the binding acknowledgement message.
- IP address you can also set the source IP address of the binding message to the IP address of the destination IP node or the IP address of the access router itself; and/or
- the indication loading module 3322 is configured to: after the binding update sub-unit 332 returns a binding confirmation message, load the indication information into the binding confirmation message, where the indication information is used to notify the source IP node that the binding confirmation message is the foregoing
- the access router replaces the response message returned by the destination IP node.
- the access router 3 may further include an address replacing unit 34 and a sending unit 35, where:
- the address replacing unit 34 is configured to receive the first IP packet sent by the destination IP node to the source IP node, and after the route optimization establishing unit 33 establishes the route optimization instead of the destination IP node, the first IP packet is used.
- the destination IP address is set to the care-of address of the source IP node; and/or the home address of the source IP node may be included in the extension header of the first IP packet; the first IP packet after the processing is processed. Passed to the transmitting unit 35.
- the home address added in the extension header may be used to notify the source IP node that the first IP packet is a route-optimized IP packet, and the IP packet is originally sent to the home address of the source IP node.
- the sending unit 35 is configured to send the first IP packet obtained by the address replacing unit 34 to the care-of address of the source IP node.
- the address replacement unit 34 may include a route optimization lookup subunit 341 and a replacement subunit 342, where:
- the route optimization lookup subunit 341 is configured to receive the first IP packet sent by the destination IP node to the source IP node, according to the destination IP address of the first IP packet and the source IP address of the first IP packet. Determining whether there is a route optimization between the destination IP address of the first IP packet and the source IP address of the first IP packet;
- the replacement sub-unit 342 is configured to: after the route optimization search sub-unit 341 determines that the route between the destination IP address of the first IP packet and the source IP address of the first IP packet is optimized, the first IP is used.
- the destination IP address of the packet is set to the care-of address of the source IP node; and/or, the home address of the source IP node may be included in the extension header of the first IP packet;
- the message is delivered to the transmitting unit 35.
- the foregoing access router may include: a mobile access gateway, or a mobile router.
- a mobile access gateway or a mobile router.
- the destination IP node side that receives the route optimization can still implement route optimization without supporting the route optimization in the mobile IPv6 protocol.
- the destination IP node can be any IPv6 node that supports the IPv6 protocol, and can be a fixed terminal using a wired connection or a wireless terminal using a wireless connection.
- the source mobile IP node can bypass its home agent to communicate with the destination IP node, and the IP packets sent by the destination IP node to the source IP node can be forwarded without the home agent of the source IP node, thereby implementing route optimization.
- the data transmission in both directions is reduced by one forwarding, which reduces the communication delay, reduces the network burden, and can normally communicate with the destination IP node even if the home agent fails, enhancing communication reliability. .
- the home agent and the mobile node are served one-to-many, the home agent may become a key bottleneck node in the case of a large number of mobile nodes, and the method provided by the embodiment of the present invention can effectively avoid the home agent load. The fault is too high.
- the functional units in the various embodiments of the present invention may be integrated into one processing module, or each unit may exist physically separately, or two or more units may be integrated into one module.
- the above integrated modules can be implemented in the form of hardware or in the form of software functional modules.
- the above integrated modules may also be stored in a computer readable storage medium if implemented in the form of software functional modules and sold or used as separate products.
- the above-mentioned storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Mobile Radio Communication Systems (AREA)
Description
实现路由优化的方法及接入路由器 本申请要求于 2009 年 10 月 16 日提交中国专利局、 申请号为 200910110531.5、 发明名称为"实现路由优化的方法及接入路由器 "的中国专利 申请的优先权, 其全部内容通过引用结合在本申请中。 技术领域
本发明涉及无线通信领域, 尤其涉及一种实现路由优化的方法及接入路由 器。 背景技术
IPv6是由 IETF ( The Internet Engineering Task Force, 互联网工程任务组 ) 制定的、 用于网络互联的标准协议, IPv6可以解决原有 IPv4技术中地址紧缺、 移动性、 安全性方面支持差的不足。 IPv6技术之后, IETF又进一步扩展 IPv6 协议, 并制定发布了支持移动性管理的移动 IPv6技术标准, 移动 IPv6技术标 准支持移动 IP 节点在保持会话联系性的前提下实现自由移动, 大大提升了用 户使用 IP协议进行通信和会话的便利性。
移动 IPv6技术中, 使用家乡代理作为移动节点的移动性管理锚点。 家乡 代理是一种具备移动性管理功能的路由器。 在基本的移动 IPv6技术方案中, 移动节点向家乡代理进行注册,在家乡代理上保存家乡地址与转交地址之间的 绑定。 任何发送给移动节点家乡地址的 IP报文, 都可以经由家乡代理使用转 交地址转发给移动节点。 当移动节点移动到新的位置时, 移动节点只需要向家 乡代理更新保存的转交地址, 就可以实现移动节点的自由移动。 其中, 家乡地 址指长期分配给移动节点的 IP地址, 无论移动节点接入点如何改变, 归属地 址始终保持不变; 转交地址指当移动节点不在家乡网络, 主机向移动节点发送 数据包时, 通往移动节点的隧道终结点地址称为转交地址; 家乡代理为位于移 动节点家乡网络上的一台路由器, 当移动节点离开家乡网络时, 该路由器维护
移动节点的当前位置信息, 并且将发送给移动节点的信息通过隧道转发给移动 节点。
在移动 IPv6 的基本模式中, 所有的业务数据都必须经过家乡代理进行转 发, 这样一方面增加了家乡代理的节点负荷, 也因为多增加一次转发导致 IP 数据传递时延增大、 网络资源浪费, 还可能因为多增加了一个关键节点导致会 话的可靠性下降, 因为一旦家乡代理的节点设备出现故障, 移动节点的全部会 话都将会失败。
为了解决移动 IPv6基本模式的不足, IETF在移动 IPv6标准中增加了一种 新的工作模式: 路由优化(Route Optimization ), 路由优化允许移动 IP节点向 对端 IP节点, 即正在与移动 IP进行 IP会话的另一方 IP节点, 进行地址绑定; 即在对端 IP节点上, 保存移动 IP节点的家乡地址和转交地址, 以及二者之间 的绑定关系。 为了实现路由优化方案, IETF明确了移动 IP节点与对端 IP节点 必须支持的扩展, 只有满足这些特定的功能之后, 移动 IP节点才可以与对端 IP节点实现路由优化。 但由于对端 IP节点的能力并不一定支持路由优化, 所 以该路由优化不一定能够实现。 发明内容
本发明实施例提供了一种实现路由优化的方法及装置,使得在接收路由优 化的目的 IP节点一侧不支持移动 IPv6协议中的路由优化的情况下, 依然可以实 现路由优化。
本发明实施例提供了一种实现路由优化的方法, 包括:
接入路由器接收发起路由优化的源 IP节点发送的测试发起消息;
根据所述测试发起消息确定所述路由优化的目的 IP节点;
代替所述目的 IP节点建立所述源 IP节点和所述目的 IP节点之间的路由优 化。
本发明实施例还提了一种接入路由器, 连接在发起路由优化的源 IP节点和
所述路由优化的目的 IP节点之间, 包括:
接收单元, 用于接收所述发起路由优化的源 IP节点发送的测试发起消息, 向目的节点确定单元发送所述测试发起消息;
目的节点确定单元, 用于根据所述接收单元发送的测试发起消息确定所述 路由优化的目的 IP节点;
路由优化建立单元, 用于在所述目的节点确定单元确定所述路由优化的目 的 IP节点后, 代替所述目的 IP节点建立所述源 IP节点和所述目的 IP节点之间的 路由优化。
在本发明实施例中, 通过利用目的 IP节点所连接的接入路由器代替该目的 节点实现路由优化, 使得源移动 IP节点可绕开自己的家乡代理与目的 IP节点进 行通信, 目的 IP节点发送给源 IP节点的 IP报文也可以不再经过源 IP节点的家乡 代理进行转发, 从而实现路由优化, 扩展了移动 IPv6中的路由优化适用范围。 可以使接收路由优化的目的 IP节点一侧, 在不支持移动 IPv6协议中的路由优化 的情况下, 可通过接入路由器实现路由优化。 附图说明
图 1所示为本发明实施例提供的一种实现路由优化的方法的流程图; 图 2所示为本发明实施例提供的又一种实现路由优化的方法的流程图; 图 3所示为本发明实施例提供的一种接入路由器结构示意图;
图 4所示为本发明实施例提供的又一种接入路由器结构示意图。 具体实施方式
为使本发明实施例的目的、 技术方案和优点更加清楚, 下面结合附图对本 发明各实施例作进一步的详细描述。
如图 1所示为本发明实施例提供的一种实现路由优化的方法, 具体方法流 程包括:
步骤 101、 接收发起路由优化的源 IP节点发送的测试发起消息;
执行该接收步骤的主体为源 IP节点希望实现路由优化的目的 IP节点所连接 的接入路由器。上述测试发起消息包括家乡测试发起消息和 /或转交测试发起消 息, 即接入路由器可能同时接收到家乡测试发起消息和转交测试发起消息并对 上述两条测试发起消息分别进行处理, 也可能分别接收上述两条测试发起消息 并分别进行处理。 其中, 家乡测试发起消息是由源 IP节点通过家乡代理发送给 目的 IP节点的, 转交测试发起消息是由源 IP节点发送给目的 IP节点的, 上述两 条测试发起消息均可以以 IP报文的形式发送, 接入路由器可以根据 IP报文的头 字段和扩展头字段确定 IP报文为家乡测试发起消息或转交测试发起消息。
上述根据 IP报文的头字段和扩展头字段确定 IP报文类型的具体方法可以 包括: 接入路由器接收到 IP报文后, 检查 IP报文的头字段( IPv6 Header )和 扩展头字段 ( IPv6 Extension Header ) , 检查这两个字段的下一个头 (Next Header )域中是否包含有 135类型的移动性扩展头( Mobility Header )。 如果 IP 报文中包含有值为 135的下一个头, 则表示此 IP报文的下一个扩展头是用于 移动性管理的移动性扩展头, 否则此 IP报文为移动性管理无关的其他报文, 也即是与路由优化无关的报文。 如果 IP报文中包括有此扩展头, 则接入路由 器进一步检查移动性扩展头中的移动性头类型 (MH Type )域的值, 例如: 如 果移动性头类型域的值为 1, 则表示此 IP报文为家乡测试发起消息, 如果移动 性头类型域的值为 2, 则表示此 IP报文为转交测试发起消息, 如果移动性头类 型域的值为 5, 则表示此 IP报文为绑定更新消息。 以上只是根据 IP报文的头 字段和扩展头字段确定 IP报文类型的一种示例, 本实施例并不局限于此, 还 可以通过其他方式对 IP报文类型进行识别, 任何可确定 IP报文类型的方法均 应落入本发明实施例的保护范围。
步骤 102、 根据上述测试发起消息确定路由优化的目的 IP节点;
本步骤中, 接入路由器可以根据测试发起消息中包含的目的 IP地址, 确定 路由优化的目的 IP节点。
可选的, 如果接入路由器本地保存有策略配置信息, 该策略配置信息为根
据接入路由器所连接的不同 IP节点分别设置的, 该策略配置信息用于针对各不 同 IP节点分别指示是否需要代替该 IP节点实现路由优化,则在步骤 102之后可以 包括: 接入路由器根据本地策略配置数据及上述确定的路由优化的目的 IP节点 确定需要代替该目的 IP节点建立源 IP节点和目的 IP节点之间的路由优化。 由于 接入路由器也可配置为默认需要为连接的 IP节点实现路由优化, 而不需要根据 不同的目的 IP节点进行判断, 所以上述根据策略配置信息及目的 IP节点确定需 要代替该目的 IP节点建立路由优化的步骤为可选步骤, 非本发明实施例中的必 要技术特征。
步骤 103、 代替目的 IP节点建立源 IP节点和目的 IP节点之间的路由优化。 在接入路由器代替目的 IP节点建立路由优化的过程中, 该接入路由器通 过源 IP节点的家乡代理向源 IP节点发送家乡测试消息,并向源 IP节点发送转 交测试消息; 之后, 接收源 IP节点在接到家乡测试消息及转交测试消息后发 送的绑定更新消息; 保存并绑定上述绑定更新消息中携带的家乡地址和转交地 址以及上述目的 IP节点的 IP地址, 即建立家乡地址、 转交地址以及上述目的 IP节点的 IP地址三者之间的绑定关联; 向源 IP节点返回绑定确认消息。 该绑 定确认消息的源 IP地址为目的 IP节点的 IP地址或接入路由器自身的 IP地址。 绑定确认消息中携带有代理确认的指示或者移动网络确认的指示,用于告知源
IP节点该绑定确认消息为接入路由器代替目的 IP节点返回的响应消息。 至此, 接入路由器代替目的 IP节点建立了源 IP节点与目的 IP节点之间的路由优化。
需要说明的是, 路由优化建立后, 由于接入路由器代理路由优化可能导致
IP 报文长度发生变化, 接入路由器可以指示给上述目的 IP 节点调整 MTU ( Minimum Transmission Unit, 最小传输单元) 的值, 以使得接入路由器在进 行路由优化转发 IP报文时使用转交地址替代家乡地址作为 IP报文头的目的 IP 地址和 /或将该家乡地址包含在 IP报文的扩展头中, 不会超过 MTU的限制。
接入路由器通过上述保存并绑定上述绑定更新消息中携带的家乡地址和 转交地址以及上述目的 IP节点的 IP地址, 使得接入路由器在后续转发上述目
的 IP节点发送给源 IP节点的 IP业务数据报文时, 如第一 IP报文, 可以使用 绑定关联中的源 IP节点的转交地址替换原本被使用的源 IP节点的家乡地址作 为该第一 IP报文头字段中的目的 IP地址, 并将该第一 IP报文发送到源 IP节 点的转交地址, 从而使得所有的 IP业务数据报文根据转交地址进行 IP路由。 因此目的 IP节点发送给源 IP节点的 IP报文不需要使用源 IP节点的家乡代理 转发, 实现了路由优化。 上述第一 IP报文用于指代在路由优化建立之后目的 IP节点向源 IP节点发送的任意一个 IP报文, "第一 IP报文" 这个名称本身不 对本发明构成限定。
另外, 源 IP节点接收到上述绑定确认消息后, 可以将发送给目的 IP节点 的 IP数据直接按照目的 IP节点的 IP地址进行 IP路由, 不再需要使用家乡代 理进行转发。
通过本实施例提供的方法, 扩展了移动 IPv6中的路由优化适用范围。 可以 使接收路由优化的目的 IP节点一侧, 在不支持移动 IPv6协议中的路由优化的情 况下,依然可以实现路由优化。目的 IP节点可以是任何支持基本 IPv6协议的 IPv6 节点, 可以是使用有线连接的固定终端, 也可以是使用无线连接的移动终端。 如图 2所示本发明实施例提供的又一种实现路由优化的方法流程图,包括: 步骤 201、 发起路由优化的源 IP 节点向家乡代理发送家乡测试发起消息 ( Home Test Init ), 其中, 该消息的源 IP地址是源 IP节点的家乡地址, 目的 IP地址是该路由优化的目的 IP节点的 IP地址。
本实施例中, 源 IP节点指在实现路由优化过程中发起该路由优化的 IP节 点; 目的 IP节点指在实现路由优化过程中, 源 IP节点希望与之实现路由优化 的目的 IP节点。 其中源 IP节点支持路由优化功能; 目的 IP节点可以支持路由 优化功能, 也可以不支持路由优化功能。 如果目的 IP节点支持路由优化功能, 那么既可以使用目的 IP节点提供的、 建立路由优化的功能, 也可以使用接入 路由器提供的、 建立路由优化的功能。 当目的 IP节点支持路由优化功能并且
使用接入路由器提供建立路由优化的功能时,接入路由器同样按照本发明实施 例所提供的方法建立路由优化。
步骤 202、 家乡代理向目的 IP节点转发该家乡测试发起消息, 根据家乡测 试发起消息的目的 IP地址, 消息被发向目的 IP节点。
需要说明的是, 由于目的 IP节点所连接的接入路由器是目的 IP节点从 IP 网络接收 IP报文必经的最后一跳网络设备, 因此, 上述接入路由器能够收到 被发向目的 IP节点的 IP报文, 如上述家乡测试发起消息。
在上述家乡代理向目的 IP节点转发家乡测试发起消息的过程中, 家乡代 理通过查找自身保存的 IP路由表, 将该家乡测试发起消息发送给到目的 IP节 点的 IP路由上的下一跳路由器或网络设备。 即家乡代理可以通过一跳或多跳 路由将上述家乡测试消息发送给目的 IP节点所连接的接入路由器。
步骤 203、 源 IP节点向目的 IP节点发送转交测试发起消息( Care-of Test Init ), 消息的源 IP地址是源 IP节点的转交地址, 目的 IP地址是目的 IP节点 的 IP地址。
需要说明的是, 步骤 203与步骤 201、 202之间无必然的先后顺序。
步骤 204、 目的 IP节点所连接的接入路由器接收到发给目的 IP节点的测 试发起消息 (包括家乡测试发起消息和 /或转交测试发起消息), 根据测试发起 消息中包含的目的 IP地址, 确定源 IP节点希望实现路由优化的目的 IP节点; 作为该目的 IP节点的路由优化代理, 代替该目的 IP节点完成这些测试发起消 息的处理, 具体的处理流程参见后续步骤。
可选的, 如果接入路由器本地保存有策略配置信息, 该策略配置信息为根 据接入路由器所连接的不同 IP节点分别设置的, 该策略配置信息用于针对各不 同 IP节点分别指示是否需要代替该 IP节点实现路由优化, 则在上述确定源 IP节 点希望实现路由优化的目的 IP节点之后, 还可以包括: 接入路由器根据本地策 略配置数据及上述确定的路由优化的目的 IP节点确定需要代替该目的 IP节点建 立源 IP节点和目的 IP节点之间的路由优化。
由于接入路由器也可配置为默认需要为连接的 IP节点实现路由优化, 而不 需要根据不同的目的 IP节点进行判断, 所以上述根据策略配置信息及目的 IP节 点确定需要代替该目的 IP节点建立路由优化的步骤为可选步骤, 非本发明实施 例中的必要技术特征。
上述策略配置数据为本发明实施例中在接入路由器上新增的一种属性数 据, 该策略配置数据所表示的策略包括: 当接入路由器连接的 IP节点作为路 由优化的目的地, 并且接入路由器接收到发送给该目的 IP节点的家乡测试发 起消息、 转交测试发起消息或绑定更新消息时, 接入路由器是否需要代替该目 的 IP节点建立路由优化。 接入路由器代替 IP节点建立路由优化后, 可以应用 路由优化方法在数据传输中不再经过源 IP节点的家乡代理。
上述策略配置数据可以包括策略配置属性: "代替目的 IP节点参与完成路 由优化", 比如策略配置属性的值可以设置为 " 1" 或者 "0", 当属性值为 " 1" 时, 接入路由器需要按照本发明提出的方法代替目的 IP节点参与完成路由优 化, 当属性值为 "0" 时, 接入路由器可以忽略本发明实施例提出的方法, 按 照一般流程工作。 表示上述策略配置属性的值的设置方式还可以有多种, 本实 施例仅以 "0"、 " 1 " 为例进行说明。 上述策略配置属性的名称也可以使用其它 名称代替, 在此仅以 "代替目的 IP 节点参与完成路由优化" 为例进行说明, 其中, 参与完成路由优化的含义可以包括建立路由优化以及应用路由优化。
上述测试发起消息是以 IP报文的形式发送到目的 IP节点所连接的接入路 由器的, 接入路由器可以根据 IP报文的头字段和扩展头字段判断消息的类型, 确认该 IP报文是否为测试发起消息。 相对于现有技术中的接入路由器仅按照 IP报文的目的 IP地址转发 IP报文的功能, 本实施例中, 接入路由器还需要对 IP报文的类型进行分析, 并对上述测试发起消息进行处理。
步骤 205、 目的 IP节点所连接的接入路由器向源 IP节点发送家乡测试消 息( Home Test )息的源 IP地址是目的 IP节点的 IP地址, 目的 IP地址是源 IP 节点的家乡地址。
在上述接入路由器向源 IP节点发送家乡测试消息的过程中, 接入路由器 通过查找自身保存的 IP路由表, 将该家乡测试消息发送给到该源 IP节点的 IP 路由上的下一跳路由器或网络设备。 即接入路由器可以通过一跳或多跳路由将 上述家乡测试消息发送给源 IP节点。
步骤 206、 源 IP节点的家乡代理接收到家乡测试消息后, 向源 IP节点转 发该家乡测试消息。
步骤 207、 目的 IP节点所连接的接入路由器向源 IP节点发送转交测试消 息( Care-of Test ), 消息的源 IP地址是目的 IP节点的 IP地址, 目的 IP地址是 源 IP节点的转交地址。
需要说明的是, 在保证步骤 201、 202、 204、 205、 206之间的先后顺序, 以及保证步骤 203、 204、 207之间的先后顺序的情况下, 由于步骤 203与步骤 205、 206之间无必然的先后顺序, 步骤 207与步骤 205、 206之间也无必然的 先后顺序, 上述流程中的步骤可以根据需求进行调整变换。 例如, 本实施例中 接入路由器可以同时接收到家乡测试发起消息和转交测试发起消息并依照上 述步骤 204提供的方法进行处理; 作为本发明又一实施例, 该接入路由器也可 以先接收上述两个测试发起消息中的一个, 比如先接收步骤 201和步骤 202中 传输的家乡测试发起消息,之后执行上述实施例中步骤 204对该家乡测试发起 消息进行处理, 然后执行步骤 205、 206, 即发送与家乡测试发起消息对应的家 乡测试消息, 之后, 接入路由器接收到上述两个测试发起消息中的另外一个, 如步骤 203中的转交测试发起消息, 然后依次执行步骤 204、 207, 即发送与转 交测试发起消息对应的转交测试消息。 以此类推, 本发明实施例流程中的步骤 还可以有其它调整方式, 在此不再赘述。
步骤 208、 源 IP节点接收到家乡测试和转交测试消息后, 向目的 IP节点 发送绑定更新消息( Binding Update ), 消息的源 IP地址是源 IP节点的转交地 址, 目的 IP地址是目的 IP节点的 IP地址, 消息中还包含有源 IP节点的家乡 地址等信息。
上述绑定更新消息可以以 IP报文的形式发送给目的 IP节点, 目的 IP节点 所连接的接入路由器确定该 IP报文类型的方法与步骤 204中接入路由器判断 IP报文是否为测试发起消息的方法大致相同。
步骤 209、 目的 IP节点所连接的接入路由器接收到绑定更新消息后, 在本 地保存的目的 IP节点所对应的数据表中保存该绑定更新消息中包含的源 IP节 点的家乡地址和转交地址,并且建立上述家乡地址和转交地址以及上述目的 IP 节点的 IP 地址三者之间的绑定关联, 之后向源 IP 节点返回绑定确认消息 ( Binding Acknowledgement ), 消息的源 IP地址是目的 IP节点的 IP地址或接 入路由器自身的 IP地址, 目的 IP地址是源 IP节点的转交地址。 至此接入路由 器代替目的 IP节点建立了源 IP节点与目的 IP节点之间的路由优化。 源 IP节 点接收到上述绑定确认消息后, 可以将发送给目的 IP节点的 IP数据直接按照 目的 IP节点的 IP地址进行 IP路由, 不再需要使用家乡代理进行转发。
可选的, 在上述目的 IP节点所连接的接入路由器接收到绑定更新消息后, 还可以包括: 接入路由器根据上述策略配置数据确定需要为上述目的 IP节点 建立路由优化。 该确定方法与步骤 204中所述方法大致相同, 在此不再赘述。
上述保存地址以及建立绑定关联, 目的是为了在后续目的 IP节点与源 IP 节点之间的数据传输过程中应用路由优化,应用路由优化的具体方法可参见步 骤 210。
需要特别说明的是, 在上述路由优化的源 IP节点和目的 IP节点之间, 可 以经过多次 IP路由转发,并且目的 IP节点也可以通过不同的方式连接到 IP网 络。 即本发明实施例可适用于多种场景, 例如:
作为本发明实施例的一种应用场景, 目的 IP节点可以不支持移动 IPv6协 议中的路由优化, 而通过连接移动路由器的方式接入到 IP 网络中, 在此场景 下该移动路由器即为本实施例中的接入路由器, 且在源 IP节点和目的 IP节点 之间的 IP通路上还存在着目的 IP节点所连接的移动路由器的家乡代理。
另外, 作为本发明实施例的又一种应用场景, 目的 IP节点可以是不支持
移动 IPv6协议中的路由优化, 但是目的 IP节点所连接的接入路由器可以支持 代理移动 IPv6协议, 在此场景下接入路由器被称为移动接入网关, 目的 IP节 点可以通过连接移动接入网关接入到 IP网络中,且在源 IP节点和目的 IP节点 之间的 IP通路上, 还存在着目的 IP节点的本地移动性锚点。
可选的, 在上述绑定确认消息中携带指示信息, 用于告知源 IP 节点该绑 定确认消息为接入路由器代替上述目的 IP节点返回的响应消息。 携带上述指 示信息的方式包括: 接入路由在上述绑定确认消息中, 可以在现有技术中的绑 定确认消息格式中增加新的标识, 例如如果接入路由器是上述移动路由器, 则 可以在绑定确认消息中增加移动路由器指示信息或者移动网络指示信息,如果 接入路由器是上述移动接入网关, 则可以在绑定确认消息中增加移动接入网关 指示信息或者代理移动 IP指示信息。
步骤 210、 上述源 IP节点与目的 IP节点之间建立的路由优化可以应用在 数据传输过程中: 源 IP节点和目的 IP节点之间的数据传输在源 IP节点、 目的 IP节点所连接的接入路由器、 目的 IP之间进行转发, 无需经过源 IP节点的家 乡代理。
需要说明的是, 上述路由优化建立之后, 因为接入路由器代理路由优化会 导致 IP报文长度发生变化,接入路由器可以指示给上述目的 IP节点调整 MTU 的值, 以使得接入路由器在进行路由优化转发 IP报文时, 使用转交地址替代 家乡地址作为 IP 文头的目的 IP地址,并且将该家乡地址包含在 IP 文的扩 展头中, 不会超过 MTU的限制。
上述目的 IP节点在向源 IP节点发送 IP业务数据报文,如第一 IP报文时, 使用源 IP节点的家乡地址作为此第一 IP报文的目的 IP地址, 第一 IP报文被 首先发送到目的 IP节点所连接的接入路由器。 接入路由器在接收到目的 IP节 点发送给源 IP节点的第一 IP报文后, 根据此第一 IP报文的目的 IP地址, 即 上述源 IP节点的家乡地址, 以及该第一 IP报文的源 IP地址, 即上述目的 IP 节点的 IP地址, 确定是否存在上述第一 IP报文的目的 IP地址和上述第一 IP
报文的源 IP地址之间的路由优化,即上述源 IP节点和目的 IP节点之间的路由 优化。 具体的确定方法包括检查是否存在该目的 IP地址和该源 IP地址相关的 绑定关联; 在存在路由优化的情况下, 接入路由器使用绑定关联中保存的源 IP 节点的转交地址替换原本被使用的源 IP节点的家乡地址作为此第一 IP报文头 字段中的目的 IP地址, 并按照源 IP节点的转交地址作为目的 IP地址查找 IP 路由表, 将此第一 IP报文发送给下一跳 IP设备。 通过上述的方法, 上述目的 IP节点发送给源 IP节点的第一 IP报文可以根据源 IP节点的转交地址进行 IP 路由, 因此发送到源 IP节点的过程中不需要使用源 IP节点的家乡代理。 需要 说明的是, 接入路由器在上述替换目的 IP地址并转发第一 IP报文的过程中, 可以将上述源 IP节点的家乡地址包含在此第一 IP报文的扩展头中, 用于告知 源 IP节点此第一 IP报文是一个经过路由优化的 IP报文, 此 IP报文原本是要 发送给上述源 IP节点的家乡地址的。
同理,接入路由器也可以对源 IP节点发送给目的 IP节点的业务数据报文, 如第二 IP报文, 进行源 IP地址替换, 即将该第二 IP报文中第二 IP报文的源 IP地址由源 IP节点的转交地址替换为源 IP节点的家乡地址, 将进行地址替换 后的第二 IP报文发送给目的 IP节点; 从而使源 IP节点发送给目的 IP节点的 第二 IP报文可以不经过源 IP节点的家乡代理。
通过本发明实施例提供的方法, 源移动 IP节点可绕开自己的家乡代理与 目的 IP节点进行通信, 目的 IP节点发送给源 IP节点的 IP报文也可以不再经 过源 IP 节点的家乡代理进行转发, 从而实现路由优化, 在两个方向的数据传 输中各减少了一次转发, 进而降低了通信时延, 减少了网络负担, 且即使在家 乡代理出现故障的情况下依然可以与目的 IP节点进行正常通信, 增强了通信 可靠性。 而且由于家乡代理与移动节点是一对多进行服务的, 所以在移动节点 数目较多的情况下, 家乡代理会成为关键的瓶颈节点, 通过本发明实施例提供 的方法, 可有效避免家乡代理负荷过高出现故障。
另夕卜,相对于扩展移动终端使其支持移动 IP v6或支持路由优化功能来讲,
本发明实施例中对接入路由器功能的扩展具有方便、 快捷、 低成本、 易实施的 优点。
本领域普通技术人员可以理解, 上述各实施例中的全部或部分步骤可以通 过程序指令相关的硬件来实现, 上述的程序可以存储于计算机可读取存储介质 中, 上述的存储介质, 可以是 ROM/RAM、 磁碟、 光盘等。 图 3所示为本发明实施例提供的一种能够实现上述方法实施例所提供的全 部方法的接入路由器 3,连接在发起路由优化的源 IP节点和路由优化的目的 IP 节点之间, 该接入路由器包括: 接收单元 31, 目的节点确定单元 32, 路由优 化建立单元 33。 其中,
接收单元 31, 用于接收发起路由优化的源 IP节点发送的测试发起消息, 向目的节点确定单元 32发送该测试发起消息;
目的节点确定单元 32, 用于根据接收单元 31发送的测试发起消息确定该路 由优化的目的 IP节点;
路由优化建立单元 33, 用于在上述目的节点确定单元 32确定上述路由优化 的目的 IP节点后, 代替该目的 IP节点建立源 IP节点和目的 IP节点之间的路由优 化。
上述测试发起消息包括家乡测试发起消息和 /或转交测试发起消息。
如图 4所示, 可选的, 该接入路由器 3还可以包括:
策略配置单元 36, 用于在目的节点确定单元 32确定路由优化的目的 IP节点 后, 查找本地保存的该目的 IP节点对应的策略配置数据, 确定需要代替该目的 IP节点建立上述源 IP节点和目的 IP节点之间的路由优化, 指示路由优化建立单 元 33代替该目的 IP节点建立路由优化;
相应的, 路由优化建立单元 33, 还用于在目的节点确定单元 32确定路由优 化的目的 IP节点后, 且收到策略配置单元 36的指示后, 代替该目的 IP节点建立 上述源 IP节点和目的 IP节点之间的路由优化。
进一步的, 如图 4所示, 上述接收单元 31还可以包括接收子单元 311和 消息类型确定子单元 312, 其中:
接收子单元 311,用于接收源 IP节点发送的 IP报文,向消息类型确定子单元 312发送该 IP报文;
消息类型确定子单元 312, 用于根据接收子单元 311发送的 IP报文的头字段 和扩展头字段确定上述 IP报文为测试发起消息, 向目的节点确定单元 32发送该 测试发起消息。
上述消息类型确定子单元 312确定 IP报文为测试发起消息的方法可参照图 1对应实施例中步骤 101的描述, 在此不再赘述。
如图 4所示, 上述路由优化建立单元 33可以包括响应子单元 331和绑定更新 子单元 332, 其中:
响应子单元 331, 用于在目的节点确定单元 32确定该路由优化的目的 IP节 点后, 通过上述源 IP节点的家乡代理向源 IP节点发送家乡测试消息, 向源 IP节 点发送转交测试消息; 其中, 可将该转交测试消息的源 IP地址设置为目的 IP节 点的 IP地址, 目的 IP地址设置为源 IP节点的转交地址。
需要说明的是, 可选的, 如果接入路由器 3中存在上述策略配置单元 36, 则响应子单元 331, 还用于在目的节点确定单元 32确定该路由优化的目的 IP节 点后, 且收到策略配置单元 36的指示后, 通过上述源 IP节点的家乡代理向源 IP 节点发送家乡测试消息, 向源 IP节点发送转交测试消息; 其中, 可将该转交测 试消息的源 IP地址设置为目的 IP节点的 IP地址, 目的 IP地址设置为源 IP节点的 转交地址。
绑定更新子单元 332, 用于接收上述源 IP节点在接到响应子单元 331反馈的 上述家乡测试消息及上述转交测试消息后发送的绑定更新消息,保存并绑定上 述绑定更新消息中携带的家乡地址和转交地址及上述目的 IP节点的 IP地址, 向 上述源 IP节点返回绑定确认消息。
进一步的, 该绑定更新子单元 332,可以包括地址设置模块 3321和指示加
载模块 3322, 其中:
地址设置模块 3321,用于在绑定更新子单元 332返回上述绑定确认消息之 前, 将上述绑定确认消息的源 IP地址设置为上述绑定更新消息中的目的 IP地 址, 或接入路由器自身的 IP地址, 还可以将绑定消息的源 IP地址设置为上述 目的 IP节点的 IP地址或接入路由器自身的 IP地址; 和 /或
指示加载模块 3322, 用于在绑定更新子单元 332返回绑定确认消息之前, 将指示信息加载到上述绑定确认消息中, 上述指示信息用于告知上述源 IP节 点上述绑定确认消息为上述接入路由器代替上述目的 IP节点返回的响应消息。 如图 4所示, 作为本发明一个实施例, 该接入路由器 3还可以包括地址替 换单元 34和发送单元 35, 其中:
地址替换单元 34, 用于接收上述目的 IP节点发送给上述源 IP节点的第一 IP 报文, 在上述路由优化建立单元 33代替上述目的 IP节点建立上述路由优化后, 将该第一 IP报文的目的 IP地址设置为上述源 IP节点的转交地址; 和 /或, 还可以 将源 IP节点的家乡地址包含在第一 IP报文的扩展头中; 将经过上述处理后的第 一 IP报文传递至发送单元 35。
上述在扩展头中加入的家乡地址可用于告知源 IP节点此第一 IP报文是一个 经过路由优化的 IP报文, 此 IP报文原本是发送给上述源 IP节点的家乡地址的。
发送单元 35, 用于将经地址替换单元 34处理后得到的第一 IP报文发送到上 述源 IP节点的转交地址。
进一步的, 上述地址替换单元 34可以包括路由优化查找子单元 341和替换 子单元 342, 其中:
路由优化查找子单元 341,用于接收上述目的 IP节点发送给上述源 IP节点的 第一 IP报文, 根据该第一 IP报文的目的 IP地址和该第一 IP报文的源 IP地址, 确 定是否存在上述第一 IP报文的目的 IP地址和上述第一 IP报文的源 IP地址之间的 路由优化;
替换子单元 342, 用于在上述路由优化查找子单元 341确定存在上述第一 IP报文的目的 IP地址和上述第一 IP报文的源 IP地址之间的路由优化后,将该 第一 IP报文的目的 IP地址设置为上述源 IP节点的转交地址; 和 /或, 还可以 将源 IP节点的家乡地址包含在第一 IP报文的扩展头中; 将经过上述处理后的 第一 IP报文传递至发送单元 35。
实际应用中, 根据不同的应用场景, 上述接入路由器可以包括: 移动接入 网关, 或者移动路由器等。 具体的应用场景及相应的路由优化方法可以参照图 2对应实施例中步骤 209的描述。
通过本实施例提供的接入路由器, 使得接收路由优化的目的 IP节点一侧, 在不支持移动 IPv6协议中的路由优化的情况下, 依然可以实现路由优化。 目 的 IP节点可以是任何支持 IPv6协议的 IPv6节点,可以是使用有线连接的固定 终端, 也可以是使用无线连接的无线终端。 源移动 IP 节点可绕开自己的家乡 代理与目的 IP节点进行通信, 目的 IP节点发送给源 IP节点的 IP报文也可以 不再经过源 IP 节点的家乡代理进行转发, 从而实现路由优化, 在两个方向的 数据传输中各减少了一次转发, 进而降低了通信时延, 减少了网络负担, 且即 使在家乡代理出现故障的情况下依然可以与目的 IP节点进行正常通信, 增强 了通信可靠性。 而且由于家乡代理与移动节点是一对多进行服务的, 所以在移 动节点数目较多的情况下, 家乡代理会成为关键的瓶颈节点, 通过本发明实施 例提供的方法, 可有效避免家乡代理负荷过高出现故障。
需要特别说明的是, 以上全部或部分单元可以集成在芯片中实现。 在本发 明各个实施例中的各功能单元可以集成在一个处理模块中,也可以是各个单元 单独物理存在, 也可以两个或两个以上单元集成在一个模块中。 上述集成的模 块既可以采用硬件的形式实现, 也可以采用软件功能模块的形式实现。 上述集 成的模块如果以软件功能模块的形式实现并作为独立的产品销售或使用时, 也 可以存储在一个计算机可读取存储介质中。 上述提到的存储介质可以是只读存 储器, 磁盘或光盘等。
附图和相关描述只是为了说明本发明的原理, 并非用于限定本发明的保护 范围。 例如, 本发明各实施例中的消息名称和实体可以根据网络的不同而有所 变化, 一些消息也可以省略。 因此, 凡在本发明的精神和原则之内所作的任何 修改、 等同替换、 改进等, 均包含在本发明的保护范围内。
虽然通过参照本发明的某些优选实施例, 已经对本发明进行了图示和描 述, 但本领域的普通技术人员应该明白, 可以在形式上和细节上对其作各种改 变, 而不偏离本发明的精神和范围。
Claims
1、 一种实现路由优化的方法, 其特征在于, 包括:
接入路由器接收发起路由优化的源 IP节点发送的测试发起消息; 根据所述测试发起消息确定所述路由优化的目的 IP节点;
代替所述目的 IP节点建立所述源 IP节点和所述目的 IP节点之间的路由 优化。
2、根据权利要求 1所述方法, 其特征在于, 所述代替所述目的 IP节点建 立所述源 IP节点和所述目的 IP节点之间的路由优化之前, 还包括:
所述接入路由器根据本地策略配置数据确定需要代替所述目的 IP节点 建立所述源 IP节点和所述目的 IP节点之间的路由优化。
3、 根据权利要求 1所述方法, 其特征在于,
所述接收发起路由优化的源 IP节点发送的测试发起消息包括: 接收所述源 IP节点以 IP报文形式发送的测试发起消息;
还包括:根据所述 IP报文的头字段和扩展头字段确定所述 IP报文为测试 发起消息。
4、根据权利要求 1所述方法, 其特征在于, 所述代替所述目的 IP节点建 立所述源 IP节点和所述目的 IP节点之间的路由优化, 包括:
所述接入路由器通过所述源 IP节点的家乡代理向所述源 IP节点发送家 乡测试消息;
向所述源 IP节点发送转交测试消息;
接收所述源 IP节点在接到所述家乡测试消息及所述转交测试消息后发 送的绑定更新消息;
保存并绑定所述绑定更新消息中携带的家乡地址和转交地址及所述目 的 IP节点的 IP地址;
向所述源 IP节点返回绑定确认消息。
5、 根据权利要求 4所述方法, 其特征在于, 所述绑定确认消息中携带 的源 IP地址为所述绑定更新消息中的目的 IP地址,或接入路由器自身的 IP地 址。
6、 根据权利要求 5所述方法, 其特征在于, 所述绑定确认消息中携带 有指示信息,所述指示信息用于告知所述源 IP节点所述绑定确认消息为所述 接入路由器代替所述目的 IP节点返回的响应消息。
7、根据权利要求 1-6中任意一项所述方法, 其特征在于, 所述代替所述 目的 IP节点建立所述源 IP节点和所述目的 IP节点之间的路由优化之后,还包 括:
所述接入路由器接收所述目的 IP节点发送给所述源 IP节点的第一 IP报 文;
使用所述源 IP节点的转交地址代替所述源 IP节点的家乡地址作为所述 第一 IP报文的目的 IP地址;
将所述第一 IP报文发送到所述源 IP节点的转交地址。
8、根据权利要求 7所述方法, 其特征在于, 所述将所述第一 IP报文发送 到所述源 IP节点的转交地址之前还包括:
将所述源 IP节点的家乡地址包含在所述第一 IP报文的扩展头中。
9、据权利要求 1-6中任意一项所述方法, 其特征在于, 所述代替所述目 的 IP节点建立所述源 IP节点和所述目的 IP节点之间的路由优化之后, 还包 括:
所述接入路由器接收所述源 IP节点发送给所述目的 IP节点的第二 IP报 文;
将所述第二 IP报文中所述第二 IP报文的源 IP地址由所述源 IP节点的转 交地址替换为所述源 IP节点的家乡地址;
将进行所述替换后的第二 IP报文发送给所述目的 IP节点。
10、一种接入路由器,连接在发起路由优化的源 IP节点和所述路由优化 的目的 IP节点之间, 其特征在于, 包括:
接收单元, 用于接收所述发起路由优化的源 IP节点发送的测试发起消 息, 向所述目的节点确定单元发送所述测试发起消息;
目的节点确定单元, 用于根据所述接收单元发送的测试发起消息确定 所述路由优化的目的 IP节点;
路由优化建立单元, 用于在所述目的节点确定单元确定所述路由优化 的目的 IP节点后, 代替所述目的 IP节点建立所述源 IP节点和所述目的 IP节点 之间的路由优化。
11、 根据权利要求 10所述的接入路由器, 其特征在于, 还包括: 策略 配置单元, 用于在所述目的节点确定单元确定所述路由优化的目的 IP节点 后,查找本地保存的所述目的 IP节点对应的策略配置数据,确定需要代替所 述目的 IP节点建立所述源 IP节点和所述目的 IP节点之间的路 由优化, 指示 所述路由优化建立单元代替所述目的 IP节点建立所述路由优化;
所述路由优化建立单元, 具体用于在所述目的节点确定单元确定所述 路由优化的目的 IP节点后,且收到所述策略配置单元的指示后,代替所述目 的 IP节点建立所述源 IP节点和所述目的 IP节点之间的路由优化。
12、 根据权利要求 10所述的接入路由器, 其特征在于, 所述接收单元, 包括:
接收子单元,用于接收所述源 IP节点发送的 IP报文, 向消息类型确定子 单元发送所述 IP报文;
消息类型确定子单元,用于根据所述接收子单元发送的所述 IP报文的头 字段和扩展头字段确定所述 IP报文为测试发起消息,向所述目的节点确定单 元发送所述测试发起消息。
13、 根据权利要求 10所述的接入路由器, 其特征在于, 所述路由优化 建立单元包括:
响应子单元,用于在所述目的节点确定单元确定所述路由优化的目的 IP 节点后, 通过所述源 IP节点的家乡代理向所述源 IP节点发送家乡测试消息, 向所述源 IP节点发送转交测试消息;
绑定更新子单元,用于接收所述源 IP节点在接到所述响应子单元发送的 所述家乡测试消息及所述转交测试消息后发送的绑定更新消息, 保存并绑 定所述绑定更新消息中携带的家乡地址和转交地址及所述目的 IP节点的 IP 地址, 向所述源 IP节点返回绑定确认消息。
14、 根据权利要求 13所述的接入路由器, 其特征在于, 所述绑定更新 子单元, 包括地址设置模块, 用于在所述绑定更新子单元返回所述绑定确 认消息之前,将所述绑定确认消息的源 IP地址设置为所述绑定更新消息中的 目的 IP地址, 或接入路由器自身的 IP地址。
15、 根据权利要求 13所述的接入路由器, 其特征在于, 所述绑定更新 子单元, 包括指示加载模块, 用于在所述绑定更新子单元返回绑定确认消 息之前, 将指示信息加载到所述绑定确认消息中, 所述指示信息用于告知 所述源 IP节点所述绑定确认消息为所述接入路由器代替所述目的 IP节点返 回的响应消息。
16、 根据权利要求 10-15中任意一项所述的接入路由器, 其特征在于, 还包括:
地址替换单元,用于接收所述目的 IP节点发送给所述源 IP节点的第一 IP 报文, 在所述路由优化建立单元代替所述目的 IP节点建立所述路由优化后, 将所述第一 IP报文的目的 IP地址设置为所述源 IP节点的转交地址, 和 /或将 所述源 IP节点的家乡地址包含在所述第一 IP报文的扩展头中;将所述第一 IP 报文传递至发送单元;
发送单元,用于将经地址替换单元处理后得到的所述第一 IP报文发送到 所述源 IP节点的转交地址。
17、 根据权利要求 16所述的接入路由器, 其特征在于, 所述地址替换 单元, 包括: 路由优化查找子单元,用于接收所述目的 IP节点发送给所述源 IP节点的 第一 IP报文, 根据所述第一 IP报文的目的 IP地址和所述第一 IP报文的源 IP地 址, 确定是否存在所述第一 IP报文的目的 IP地址和所述第一 IP报文的源 IP地 址之间的路由优化;
替换子单元,用于在所述路由优化查找子单元确定存在所述第一 IP报文 的目的 IP地址和所述第一 IP报文的源 IP地址之间的路由优化后,将所述第一 IP报文的目的 IP地址设置为所述源 IP节点的转交地址,和 /或将所述源 IP节点 的家乡地址包含在所述第一 IP报文的扩展头中;将所述第一 IP报文传递至所 述发送单元。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/440,705 US20120188945A1 (en) | 2009-10-16 | 2012-04-05 | Route optimization method and access router |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200910110531.5A CN102045235A (zh) | 2009-10-16 | 2009-10-16 | 实现路由优化的方法及接入路由器 |
CN200910110531.5 | 2009-10-16 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/440,705 Continuation US20120188945A1 (en) | 2009-10-16 | 2012-04-05 | Route optimization method and access router |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011044835A1 true WO2011044835A1 (zh) | 2011-04-21 |
Family
ID=43875843
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2010/077685 WO2011044835A1 (zh) | 2009-10-16 | 2010-10-12 | 实现路由优化的方法及接入路由器 |
Country Status (3)
Country | Link |
---|---|
US (1) | US20120188945A1 (zh) |
CN (1) | CN102045235A (zh) |
WO (1) | WO2011044835A1 (zh) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110286597A1 (en) * | 2009-11-17 | 2011-11-24 | Qualcomm Incorporated | HOME AGENT PROXIED MIPv6 ROUTE OPTIMIZATION MODE |
CN108055200B (zh) * | 2014-01-24 | 2021-01-12 | 华为技术有限公司 | 一种数据包发送方法、移动路由器及网络设备 |
RU2640738C1 (ru) * | 2014-01-26 | 2018-01-11 | Хуавей Текнолоджиз Ко., Лтд. | Способ отправки пакета данных и мобильный маршрутизатор |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1870819A (zh) * | 2005-08-24 | 2006-11-29 | 华为技术有限公司 | 实现IPv6通信伙伴支持移动IPv6的路由优化的方法 |
CN1980231A (zh) * | 2005-12-02 | 2007-06-13 | 华为技术有限公司 | 一种在移动IPv6中更新防火墙的方法 |
WO2009117126A2 (en) * | 2008-03-19 | 2009-09-24 | Nortel Networks Limited | Support for multi-homing protocols using transient registration and expanded binding revocation messages |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4028793B2 (ja) * | 2002-12-03 | 2007-12-26 | 株式会社日立製作所 | 移動端末装置および端末間パケット通信方法 |
US7308506B1 (en) * | 2003-01-14 | 2007-12-11 | Cisco Technology, Inc. | Method and apparatus for processing data traffic across a data communication network |
KR101532106B1 (ko) * | 2007-10-10 | 2015-06-26 | 노오텔 네트웍스 리미티드 | 다중-호밍 프로토콜에 대한 지원 |
US8228843B2 (en) * | 2007-11-12 | 2012-07-24 | Futurewei Technologies, Inc. | Internet protocol version 4 support for proxy mobile internet protocol version 6 route optimization protocol |
-
2009
- 2009-10-16 CN CN200910110531.5A patent/CN102045235A/zh active Pending
-
2010
- 2010-10-12 WO PCT/CN2010/077685 patent/WO2011044835A1/zh active Application Filing
-
2012
- 2012-04-05 US US13/440,705 patent/US20120188945A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1870819A (zh) * | 2005-08-24 | 2006-11-29 | 华为技术有限公司 | 实现IPv6通信伙伴支持移动IPv6的路由优化的方法 |
CN1980231A (zh) * | 2005-12-02 | 2007-06-13 | 华为技术有限公司 | 一种在移动IPv6中更新防火墙的方法 |
WO2009117126A2 (en) * | 2008-03-19 | 2009-09-24 | Nortel Networks Limited | Support for multi-homing protocols using transient registration and expanded binding revocation messages |
Also Published As
Publication number | Publication date |
---|---|
US20120188945A1 (en) | 2012-07-26 |
CN102045235A (zh) | 2011-05-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP3459217B1 (en) | Transporting udp packets over an mptcp connection | |
JP3501994B2 (ja) | デスティネーションノードへパケットを分配するルーティングパスを確立する方法 | |
US8272046B2 (en) | Network mobility over a multi-path virtual private network | |
JP5495243B2 (ja) | プロキシ移動体インターネットプロトコルバージョン6ローカルルーティングに関する経路最適化のための方法および装置 | |
US8655265B2 (en) | Efficient multicast control processing for a wireless network | |
JP3501993B2 (ja) | 無線アクセス方法 | |
JP5551247B2 (ja) | マルチnat64環境のための方法及びホストノード | |
US8144687B2 (en) | Method, apparatus and system for establishing a direct route between agents of a sender node and a receiver node | |
JP5097620B2 (ja) | マルチパス通信システム | |
JP3665622B2 (ja) | ソースアドレス選択システム、ルータ装置、通信ノード及びソースアドレス選択方法 | |
RU2530694C2 (ru) | Способ (варианты) и система обеспечения обмена информацией с мобильным узлом | |
JP2008527815A (ja) | モバイル・インターネット・プロトコルを使用してルーティング・スタックをバイパスするための方法、システム、およびコンピュータ・プログラム | |
JP2012519396A (ja) | 動的経路のセットアップを通知するための複数の通信インタフェースを備えた通信ノードのための方法及びそれに関連する装置 | |
WO2014000591A1 (zh) | 一种路由功能启动及数据传输的方法、设备和系统 | |
JP2014520428A (ja) | マルチパスオーバーレイネットワーク及びそれのマルチパス管理プロトコル | |
WO2009105956A1 (zh) | 无线通信网络中建立多隧道的控制方法和系统 | |
WO2007131404A1 (fr) | Méthode et dispositif de transfert rapide | |
CN116368860A (zh) | 5g边缘计算粘性业务的网络层支持 | |
EP1976224A1 (en) | Routing support in heterogeneous communication networks | |
US8908662B2 (en) | Apparatus and method of flow movement for network-based mobility management protocol | |
WO2011044835A1 (zh) | 实现路由优化的方法及接入路由器 | |
US20090180437A1 (en) | Communication apparatus and handover method | |
US20080219271A1 (en) | IP multicast based systems, apparatuses and methods for TCP connection migration | |
WO2007022697A1 (fr) | Procede de communication entre un associe de communication ipv6 et le noeud mobile ipv6 ainsi que la passerelle de l'agent associe de communication | |
WO2013053252A1 (zh) | 网络过载的处理方法及装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 10823065 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 10823065 Country of ref document: EP Kind code of ref document: A1 |