TWI252002B - Method and apparatus for signaling virtual channel support in communication networks - Google Patents

Abstract

A method and apparatus for signaling virtual channel support in communication networks. A node receives a data packet from another node to examine whether the other node commonly supports one or more virtual channels of a given type on a point-to-point communication link between the nodes, and the node signaling common support for one or more virtual channels of a given type, based on the content in the received data packet that indicates whether the other node transmitting the data packet has adequate queue resources to support one or more virtual channels of a given type, and based on whether the node has adequate queue resources to support the one or more virtual channels of a given type.

Description

</ RTI> </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; [Prior Art] Background of the Invention The present invention relates to the field of electronic systems, and more particularly to a method and apparatus for transmitting a virtual channel support signal over a communication network. SUMMARY OF THE INVENTION A method and apparatus for issuing a virtual channel support signal over a communication network. A node receives a data packet from another node to see if another node 15 supports the same type of one or more virtual channels in the inter-node point-to-point communication link, and the node has one or more of the specific types The virtual channel sends the same support signal. This is based on whether the node of another data packet in the received data packet content has sufficient resources to support one or more virtual channels of a specific type, and whether the node 20 has sufficient resources according to whether the node 20 has sufficient resources. One or more virtual channels of a particular type. BRIEF DESCRIPTION OF THE DRAWINGS The present invention is illustrated by way of illustration and not limitation, and in the Ϊ252002 Brother 1 is a block diagram of an electronic system in accordance with an embodiment of the present invention. Fig. 2 is a structural diagram of a virtual channel support manager according to an embodiment of the present invention. Figure 3a is a graphical representation of a BVC flow control packet in accordance with an embodiment of the present invention using a Known Data Link Layer Packet (DLLP) format. Figure 3b is a graphical illustration of an OVC flow control signal initialization DLLP format in accordance with an embodiment of the present invention. Figure 3C is a graphical illustration of an MVC flow control signal initialization DLLP format in accordance with an embodiment of the present invention. 10A is a pictorial illustration of the relationship between VC index and VC ID in accordance with an embodiment of the present invention. Figure 4b is a diagram illustrating the exchange of a flow control credit initialization DLLP format between two nodes in accordance with an embodiment of the present invention. Figure 5 is a flow diagram of a method for indicating virtual channel support in accordance with one aspect of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention are directed to methods and apparatus for issuing virtual channel support signals over a communication network. According to the embodiment, a virtual channel (VC) support manager is introduced here. As described in more detail below, a new VC support manager is operable to issue one or more of a particular type of support for a peer-to-peer communication link based on the content of the data packet received by another node on the peer-to-peer communication link. The virtual channel's 彳5 3 tiger gives another division. Figure 1 is a block diagram of an electrical circuit of the present invention. For example, 'Electric 1252002 shows or informs the terminal II2 and the switching element 114. Many virtual channel types facilitate efficient data transfer on the peer-to-peer communication link 101, such as bypass virtual channel (BVC), sequential virtual channel (OVC), or multi-cast virtual channel (MVC). In one embodiment, it is supported by two queue resources, a bypass queue, and a sequential queue. The sequencer is a first-in, first-out (FIFO) column. A bypass queue is an eight-input first-in, first-out (FIFO) queue in which the information is labeled as, bypassable, and. By placing the bypassable data in the bypass queue and placing other data in the sequence, if the bypassable packet is delayed, other data can continue to pass through the sequence, thus avoiding potential data stalls. Point-to-point communication link 101. A VC supported by a queue resource is called a single sequence. The BVC and 0VC virtual channel types are used to transmit a single broadcast data (data addressed to an end point). The MVC virtual channel type is used to transmit multiple broadcasts. Send data (data addressed to one or more endpoints). The MVC virtual channel type utilizes a source of queues: a single FIFO queue that is identical to the resources needed to support a 0VC. However, compared to the single broadcast data, since the multi-cast material is routed to the MVC virtual channel type by point-to-point A, the FIFO queue is regarded as a multi-cast queue. In one embodiment, as will be more fully detailed below, the communication protocol references one or more of the 'new technical features' including, but not limited to, supporting one or more virtual channels of a particular type on the point-to-point communication protocol 101. The vc support manager can use this protocol to determine the support of a switching element 114 and/or one end point II2 for one or more virtual channels on a peer-to-peer protocol. 1252002, Fig. 2 is a (10) composition of a virtual channel support port in accordance with an embodiment of the present invention. Figure 2 _, vc support manager includes 〆 signal 抆 逻辑 logic 22 〇, memory 23 〇, I / O interface 24 〇, and select Du: or a variety of application layers 25 〇, each light as shown Pick up. The picture medium engine 21 includes a read characteristic, a transmission characteristic, and a 丨±216. As described in more detail later, these features convey a Layer 1 packet (DLLP), which includes an indication of whether a node (ie, the endpoint's intended channel V::::) supports at-point-to-point pass 1 3 2〇〇Γ:= The user control logic 220 controls the knowledge of the entire dead support manager 200 and is easy to execute any content to perform the control of the VC master and/or executable state 200. Here, 15 220 may well be a combination of - microprocessor, network processor, micro control = enteral food, or 彳 控 control surface (4) (4) any such category. Alternatively, in an alternative embodiment, control = 22°::T: execution can preferably be performed in the signal engine 21°.邈22. Selectively causing the signal (10) 2 to signal whether it is a node or node money pair between two nodes =: Private one or more virtual channels of a given type, according to the DLLP content exchanged to the small room. 4 nodes as used herein, memory 2_ to perform a variety of records including but not limited to electrical memory, surface power ~ "body, body and programmable variables or state memory. According to two: wide, flash Memory 21. Use memory 23. Temporary storage for one or more nodes Source = 20 1252002 Supports one or more virtual channels of a specific type on a point-to-point communication link. Here, memory 23 includes virtual channel queue resource table , having one or more information for placing resources related to the node or node to support a specific type of _ or more virtual channels in the peer-to-peer communication network link. 5 Memory 23 0 may also include memory The scratchpad is configured to store a signal flag that is signaled by the signal engine 210 or released to support one or more virtual channels of a specific type of point-to-point communication link between the nodes. The memory 230 can also be stored. Execution content. The control logic 22 uses the execution content of the town to execute the action of the signal engine 210 to exchange the inter-node DLLp and the action of issuing the 10-node virtual channel support signal according to the exchanged DLLP content. For the user, the I/O interface 24 provides a communication interface between the vc support manager 2 and an electronic system. For example, the vc support manager (10) is a component of a computer system, of which 1 The interface 24 provides a communication interface between the VC support manager (10) and the electronic system through an n communication channel. Here, the control logic 22 can receive a series of instructions from the application software via the I/O interface 24 The vc is sent to the Vc Support Manager 2 to perform the characteristics of one or more of the signal engines 210. In an embodiment, the vc support manager 200 includes one or more applications 20 250 to provide internal instructions to the control logic. As used herein, the application 250 can more add a user interface, such as a graphical user = face (GUI), to the use of the management features and the like. Alternatively, in the example, the signal engine 21 The - or more characteristics may preferably be applied as 25 〇, optionally caused by control logic 22 。. 1252002 In an embodiment, a vc support manager 2 is clamped in switching element 114 Thus, vc The manager 200 causes the read characteristic 212 to read one of the DLLPs received by the switching element 114 on the point-to-point link 101, for example, from the endpoint II2. Furthermore, the VC support manager 2 also selectively makes resource characteristics 216 5 determines that the queue resource switching element 114 supports a point-to-point communication link ιοί on a particular type of virtual channel. In an embodiment, as will be explained in more detail later, the read characteristic MS and the resource characteristic 216 occur simultaneously. The feature 216 is moved into a first temporary virtual channel queue resource table, for example, stored in the memory 23, with one or more indicating that the record 10 indicates the amount of the 列 宾 宾 宾 宾Link ιοί to a specific type of virtual channel. As described above and as will be described in more detail below, such a list of resource representations supports one or more specific types of virtual channels, including BVC, 0VC, and/or MVC virtual channel types. Once the resource characteristic 216 moves into the first temporary virtual frequency 15 queue resource table of the switching element 114, the VC support manager 200 then selectively performs the transfer characteristic 214. At least a portion of the transfer characteristic 214 generates one or more DLLs and transmits a DLLP in response to the queue resource moved to the first temporary virtual channel queue resource table to indicate that the switch component 114 supports the particular type of virtual channel on the peer-to-peer communication link Or lack of support. Further, at least part of the read characteristic 212 is moved into a second temporary virtual channel queue resource table according to the DLLP content received by the switch element 114, or more, for example, stored in a memory 23〇, accompanied by The amount of resources that are represented by one or more DLLPs received by a node (e.g., endpoint 112) at the other end of the peer-to-peer communication link. Once the first and second temporary virtual 1252002 channel queue resource tables are moved in, the resource characteristics Sl6 read the first and second temporary virtual channel queue resource tables. At least some of the resource characteristics 216 signal the support of the particular type of virtual channel on the peer-to-peer communication link based on the contents of the temporary virtual channel queue resource table. 5 The process of exchanging DLLP continues until the switching component 114 determines the support for each virtual channel on the peer-to-peer communication link 101. In a consistent embodiment, the VC Support Manager 2 can be located in Endpoint n2. Therefore, the VC support manager determines the support of the endpoint U2 for a particular type of virtual channel on the peer-to-peer communication link 1.1. In another embodiment, the vc support processor 200 can be located outside of the endpoint II2 and the switching component 114 can determine and signal the support of the node to a particular type of virtual channel on the point-to-point communication link 101. According to an embodiment, the resource characteristic U6 is sent to support a specific type of virtual channel by declaring or deasserting a one-dimensional flag, and the bit flag is stored in a memory memory of the memory (ie, In the memory 23, the VC support manager 2 element or the component of the VC support manager 200 can be accessed through the interface / interface 24 . Figure 3a is a graphical illustration of a B V C flow control signal initialization data link layer packet (DLLP) format in accordance with an embodiment of the present invention. 20 InitFC-BVC 31 包含 shows a 32-bit BVC initial credit DLLP format, but the invention is not limited to the 32-bit format. In one embodiment, one or more Init-FC-BVC3i DLLs are transmitted by endpoint II2 or switching element 114 to indicate support for the BVC virtual channel on the point-to-point communication link 101. These init-FC-BVC 310 DLLP packages 12 1252002 contain two fields: a bypass queue credit field, and a sequential credit field. As will be explained later in Figure 4a, a third field contains a virtual channel authenticator and displays "VC index range 0-7". As mentioned above, in order to support a BVC, both the endpoint II2 and the switching component 114 need a sufficient amount of resources to support the bypass and sequential queues on the virtual channel. In order to declare bypass and sequential queue depth or capacity, the non-zero value in the bypass queue and the sequential credit field of each InitFC-BVC 31〇DLLP indicates a specific virtual channel authenticator for the point-to-point communication link 101. The BVC system is supported. 1 〇 3b is a pictorial illustration of a DLLV C flow control signal initialization DLLP format in accordance with an embodiment of the present invention. In Figure 3b, an InitFC-OVC DLLP is in the InitFC-OVC32〇. In one embodiment, one or more Init-FC-OVC32(R) DLLPs are transmitted by Endpoint II2 or Switching Element 114 to indicate that one or more virtual channels support 0VC on the peer-to-peer communication link. These Init-FC-OVC 320 DLLs each contain two fields to represent 〇vC support for the two virtual channels at the same time. As explained in more detail in Figure 4a, a virtual channel authenticator is included in a third field and is displayed as "VC Index 8-11." In order to declare the bypass and sequential depth or capacity, the non-zero value in the bypass queue and the sequential credit field of each InitFC-OVC 20 32〇DLLP indicates a specific virtual channel for the peer-to-peer communication link 101. The recognizer 0VC is supported. Figure 3c is a pictorial illustration of a DLLV C flow control signal initialization DLLP format in accordance with an embodiment of the present invention. In the 3C figure, a 13 1252002

The InitFOMVC DLLP is depicted as InitFC-MVC33〇. In one embodiment, one or more Init-FC-MVC 330 DLLPs are transmitted by endpoint II2 or switching component 114 to indicate that one or more virtual channels support MVC on point-to-point communication link 101. These Init-FC-MVC 33〇 5 DLLPs each contain two fields to represent MVC support for the two virtual channels at the same time. As explained in more detail in Figure 4a, a virtual channel authenticator is included in a third field and is shown as "VC Index 12-13." In order to declare bypass and sequential queue depth or capacity, each InitFC-MVC 33〇DLLP bypass queue and the non-zero value indication in the sequential credit field 10 for a point-to-point communication link ιοί a specific virtual channel The reader MVC is supported. Figure 4a is a pictorial illustration of the relationship between VC index and VC ID in accordance with an embodiment of the present invention. Table 4〇5 lists the case where a specific virtual channel authenticator code (VC ID) is assigned to a virtual channel index (VC index), and further lists the VC index code range assigned to the BVC, 0VC, or MVC configuration. In the case of the present invention, the present invention is not limited thereto. Figure 4b is a graphical illustration of the exchange of flow control credit initialization DLLP format between two nodes in accordance with one embodiment of the present invention. Nodes 41A and 420, respectively, represent a sufficient amount of six columns of resources for six and five virtual channels, respectively, shown in Figure 4b. Node 410 represents the support VC IDs 1、, 1, 8, 9, 1 〇, and 16, while node 420 represents the support VC ID 〇, 1, 2, 3, and 16. In accordance with an embodiment, node 41 transmits a flow control initialization DLLP with a non-zero credit value of one of the appropriate credit fields to node 420, wherein at least one DLLP is associated with one or more supported virtual channels. When flowing through the VC ID assignments listed in Table 14 1252002 4〇5, node 4i transmits 5 DLLPs with non-zero credit values of VC IDs ο, 1, 8, 9, ι, and ι6 to node 42 〇 (Because VC ID 8, 9 will be transmitted by the same DLLP with VC index 8, see Table 405). Node 420 also transmits 5 DLLPs with values of non-zero signals of VC ID 1、, 1, 2, 3, and 16 to node 41 〇. Therefore, in this embodiment, the contents of the initial words DLLP are controlled in accordance with the exchange flow, and only the VC IDs 1、, 1, 16 are collectively supported by the nodes 410, 420. Therefore, VC IDs 1、, 1, 16 are supported on the point-to-point communication link between nodes 41〇 and 42〇. 10 Figure 5 is a flow chart showing a method of virtual channel support in accordance with one aspect of the present invention. The two methods in Figure 5 are shown to occur simultaneously, one for the transfer of DLLP and the other for reading the DLLP. In block 510, in response to control logic 22, signal engine 210 selectively causes resource characteristic 216 to determine a node supporting a particular virtual channel VC(x) for a queue resource, such as switching element 114, for a point-to-point communication link. The data is transmitted on 101 to another node, such as endpoint 112. In an embodiment, the resource characteristic 216 then moves to the point VC(X) of one or more of the queue resources supported by the switching element 114 on the point communication link 101 to reflect the virtual channel of one of the specific types, to the first A temporary virtual channel 伫 20 column resource table, that is, in a memory 23 。. Once the first virtual channel queue resource table is moved in by the resource characteristics, the method proceeds to block 52. In block 52, signal engine 210 generates transmission characteristics 214. The transfer feature 214 accesses the first temporary virtual channel queue resource table and generates an InitFC-BVC3io format, InitFC-OVC32 format, or 15 1252002

InitFC-MVC 33-style DLLP VC (8). As described above, the reading step of the DLLP such as 5H occurs simultaneously with the transfer step. Here, the block s3 of the method is further explained, which causes the read engine 212 to be generated in response to the control logic 22'. The engine 210 generates a read characteristic 212. In an embodiment, an InitFC-BVC 31 format,

The DLLP VC(x) generated by the InitFC-OVC 32〇 format, or the InitFC-MVc 33〇 format, is sent to the switch element 114 by the endpoint ι 2 on the point-to-point communication link. The read feature 212 reads the virtual channel authenticator field (ie, the vc index of the vc index 10 0-7, the VC index of the 0VC 8-u, and the VC index of the MVC 12-13), and the sequential credit field of the DLLP. And/or bypass the credit field or the multi-cast queue. Once the application field of the DLLP is read, the method is read by 2 to block 54. In block 54, the read characteristic am shifts the queue resource amount VC(x) representing the DLLP into a second temporary virtual resource table (i.e., memory 23A) according to the content of the field. Once the first and second temporary virtual channel queue resource tables are moved by the read feature 212, as described in blocks 51A and 540, the method proceeds to block 55A. In block 55, the margin feature 2l6 accesses the first and second temporary virtual channel queue resource tables and determines whether VC(x) is based at least in part on the temporary virtual channel. Supported (ie, sufficient credit resource presentation support for point-to-point communication links and/or bypass or multicast vc(x)). If the resource characteristics 216 determine that VC(x) is commonly supported, the method proceeds to block 56. In block 560, the resource feature 216 is initiated by the endpoint 2 and the switching component 1252002 114 by declaring a one-bit flag to signal VC(x) on the point-to-point communication link. This bit flag is declared in a memory register (i.e., memory 23) stored in a memory. This method then begins to determine if additional VC(x) is supported by the point-to-point communication link, the endpoint II2, and the switching component 134. 5 If the resource characteristic 216 determines that VC(x) is not supported by the endpoint η2, then the method proceeds to block 57. The resource characteristic 216 in block 57 借 is transmitted by the one-element flag to announce that the VC (x) is not supported by the endpoint II2 and the switch element 114 of the point-to-point communication link. This bit flag is de-announced in a memory register (ie, memory 23) stored in a memory. This method then begins to determine 10 if additional VC(x) is supported by endpoint II2 and switch element 114 on the point-to-point communication link. Referring again to the block diagram of Figure 1, the electronic system 100 can be a servo, a switch, a bridge, or an exchange organization for communication networks, although the invention is not limited to such listings. In one embodiment, system control logic 111 controls the operation of the entire electronic system 100 to facilitate the implementation of a wide variety of logic devices and/or executables to perform the operations of electronic system 100. The system control logic 1-4 preferably includes a microprocessor, network processor, microcontroller, fpga, ASic, executable content that can perform such control features, and/or any combination of the above 20 types. . The sub-system, charging 100 also includes the system memory 1〇6 to store the search/characteristics provided by the electronic system 1〇1. Here, the system memory 1G6 is used to store the temporary control during the system control video 1〇4 execution. Memory variables or other real-time information. As used herein, system memory ig6 may preferably include a variety of memory media 17 l252〇〇2 body' including but not limited to: electrical memory, hybrid memory Storage medium for volume, flash memory, programmable variables or states, RAM, r〇m, or other sinister or sinister. According to an exemplary embodiment, machine readable instructions may be provided in a machine accessible medium format. To system memory 1-6. As used herein, a machine-accessible medium is apt to perform any mechanism that provides (i.e., stores and/or transmits) information that the machine (e.g., electronic system 100) can read. A machine readable medium preferably includes R〇M, ram, a disk storage medium, an optical storage medium, a flash memory device, an electronic, optical, acoustic, or other conductive type of signal (eg, carrier wave, Infrared letter No. 10, Digital signals), and the like. The instructions may be provided to system memory 1〇6 via a remote connection through system I/O interface 1〇8 (eg, via a communication network). Endpoint II2 represents a component of electronic system 100. Endpoint II2 may be a source node or an endpoint node that is transmitted as data in electronic system 100 and/or remotely transmitted 15 in electronic system 1. Endpoint 112 may also include one or more routers, networks Processor, embedded logic, input/output of an exchange organization, and the like. As used herein, a switching element represents a component of electronic system 100 that is transmitted as data in electronic system 100 and/or in electronic system 1 An intermediate node transmitted at the terminal 20. Here, the switching element is apt to represent any hardware and/or software component to receive and transmit data. Thus, according to an embodiment, the switching element 114 may preferably include one or more. A mediation switch for switching organizations, bridge microprocessors, software applications, embedded logic, or the like. The VC support manager n6 can be included in the endpoint 112, ie, or in the switching element 114. 8 1252002 In addition, the VC support manager ιι6 can preferably be communicatively coupled to the endpoint η2 and/or the switching component 114 through, for example, the communication channel 102 or the system I/O interface 1 〇 8. The I I/O interface 1 〇 8 One or more components, such as the control logic 〇4, can be interacted with I/O output devices such as a mouse, keyboard, touch pad, cathode line monitor, liquid crystal display, etc. According to an embodiment, VC Support manager ii6 facilitates issuing a node (ie, endpoint II2 and/or switching component 114) to support one or more specific virtual channel messages on the peer-to-peer communication link to a node, which may preferably be a hardware or software , a corpus callosum, or any combination of the above. The VC support tube 10 can be preferably applied with one or more ASICs, special function controllers or processors, FPGAs, other hardware devices, and The body device or software performs the functions described at least in the embodiments herein. In the foregoing, numerous specific details are set forth to illustrate the invention. However, it is clear that the present invention, even if it is not so detailed, is sufficient for a person skilled in the art to understand. The structure and apparatus of the present invention are also shown in the drawings to illustrate the invention. The embodiments in the specification are indicative of embodiments including at least one of the features, structures, and features of the invention. Thus, in one embodiment, the wording of 20 appears throughout the specification, and does not necessarily refer to the same embodiment. Similarly, in many places throughout the specification, in another embodiment The phrase "such" is not necessarily referring to the same embodiment. Although the present invention has been described in terms of a number of embodiments, it is apparent to those skilled in the art that the present invention is not limited to the embodiment, but other variations included in the scope of the inventive concept are apparent. This manual is intended for use. The invention is not limited to the invention, and the invention of the invention is covered by the scope of the patent application. 5 [Simple Description of the Drawings] Fig. 1 is a block diagram of an electronic system according to an embodiment of the present invention. Fig. 2 is a structural diagram of a virtual channel support manager according to an embodiment of the present invention. Figure 3a is a graphical illustration of a Initial Data Link Layer Packet (DLLP) format for a BVC Traffic Control Message 10 in accordance with an embodiment of the present invention. Figure 3b is a graphical illustration of a ΟV C flow control signal initialization DLLP format in accordance with an embodiment of the present invention. Figure 3c is a pictorial illustration of an MVC flow control signal initialization DLLP format in accordance with an embodiment of the present invention. Figure 4a is a pictorial illustration of the relationship between VC index and VC ID in accordance with an embodiment of the present invention. Figure 4b is a graphical illustration of the exchange of flow control credit initialization DLLP format between two nodes in accordance with one embodiment of the present invention. Figure 5 is a flow chart of 20 methods for non-virtual channel support in accordance with the level of the present invention. [Description of main component symbols] 102· · · · Communication channel 1〇8·...System I/O interface 104· ···System control logic 110· ·· · Mass storage 106----System memory I12 •... Point 20 1252002 ιΐ4 · · · Exchange element ii6 ···-VC support manager 200 - VC support manager 210 - system engine 212 - read characteristics 214 · · ... transfer characteristics 216 · · · · resource characteristics 220----Control Logic 23〇····Memory 24〇----I/O Interface 25〇··· ·Application

310----InitFC-BVC

32〇----InitFC-OVC

33〇----InitFC-MVC 410····Table 420----Table 51〇^57〇----Step 21

Claims (1)

1252002 - , ir a ir \ I l ......... - - · . . . . . . . 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上 上- A method for use in a node for issuing a virtual channel support signal, the steps comprising the steps of: 5 1 acknowledging a data packet from another node to check whether the other node supports a peer-to-peer communication link between nodes One or more virtual channels of a particular type; and μ sends the same support number to the one or more virtual channels, according to the received content of the data packet, the another 10 packets are indicated Whether the node has a sufficient number of queue resources to support the particular type of the one or more virtual channels, and to support the particular type of the one or more virtual channels depending on whether the node has sufficient resources. 2. According to the method of Patent Application No. 1, wherein the specific type of virtual channel includes a sequence that must support a sequence and a bypass queue to bypass the virtual channel. 3. According to the method of applying for patent coverage, the specific type of virtual frequency includes demand support-sequence-like-sequence-only virtual channel. 4. According to the method of claim 1JS, wherein the specific type of virtual reality includes a demand-supporting multi-casting-multiple-cast virtual channel. 5. The method of claim 1, wherein the node signal is jointly supported by declaring a bit flag associated with the one or more supported virtual channels. 22 1252002 t li !/ 5 10 15 20 6. According to the method of claim 5, the method further comprises: storing the declared bit flag in the memory. a method for issuing a virtual channel support signal, comprising: ???changing a data packet between two nodes on a point-to-point communication key, wherein the content of each exchanged data packet indicates whether each node has a sufficient amount of Column resources to support a particular type of such-or a plurality of virtual channels on the peer-to-peer communication link; and issuing two nodes to support a particular money type based on the exchanged data packet content - or more virtual Pro signal. 8. The method of claim 4, wherein the step of issuing a signal supported by the two nodes further comprises: the node issuing two by declaring a bit flag associated with the supported virtual channel. The step of clicking the signal of the common support. 9. The method of claim 8, wherein the method further comprises: storing the declared bit flag in a memory. And a device for issuing a virtual channel support signal, comprising: a node; and a virtual channel support manager, according to whether the other node has resources listed in the content of the packet received from another node Supporting a certain type of one or more of the virtual frequency and domain, whether the node has sufficient resources to support the special or the virtual channel of the δHai Temple, to send the node another- The node supports one or more of the virtual frequencies of a certain type. 7. 23 iii a if 1252002 The device according to the first aspect of the patent application scope, wherein the virtual channel supports the government by declaring and common Support for the support of the node in the point-to-point communication link, the bit flag associated with one or more virtual channels of a particular type. 5 10 12·Washing the device of claim 11, wherein the virtual channel support manager announces the dry bit flag in a memory register. 13. The device of claim 12, wherein the memory register is located in a memory coupled to the node. 14. The device according to claim 1, further comprising: a memory for executing executable content; and a touch memory pass-control logic that executes the executable content to execute One of the virtual channel support managers requests. 15. Apparatus according to claim 14 wherein the control logic comprises control logic executed by a network processor. 15 τ % The scope of the search item is installed in the network. One of the endpoints in the network-parent-alternating structure 17 is a system for issuing a virtual channel support signal, which includes a node; 20 Depending on the electrical memory; and = dao jing, according to the bedding packet received from the other node (four) cutting material is (4) the other node has a sufficient amount or a large number of virtual frequency resources to support the feature J Resources to support a particular type of such defects, and (iv) whether (4) the one or more virtual frequencies of the type specified by the slaves are sent to request the point 24 1252002 cold /, / / The other node supports a certain one or more of the virtual channels, and the virtual frequency or the phasic 7 a sue with a particular type of material ω 贞Forced to associate a meta-flag and store it in 4 power-sensitive quotations, φ 〇 occupies the middle to request the support of the node. 2: ♦ The system of the 17th patent range, in which the bit flag is in the body of the node that can be accessed to the node. The memory of the memory register is 10咅9S\^ 10 15 20 The system for applying for the patent scope item, wherein the node is an endpoint of a communication network--the training. 20. A machine that contains the content that is useful to emit a virtual channel support signal: accessing the media 'where the content is executed by a node will cause: Lang to perform the following actions: Love receives from another # point - data Packets to verify whether the other section is one or more virtual channels of a particular type between the nodes on the peer-to-peer communication link; and the two meals jointly support the signals of the one or more specific types of virtual channels And supporting, according to the received information in the content of the data packet, whether the node of the another transmission packet has a sufficient amount of resources to support the - or a plurality of virtual channels of the type, and whether the node is based on the node Having a sufficient number of resources to support the one or more virtual channels of the particular type. 21. The machine-accessible medium of claim 2, wherein the node signal is announced by the one or more A plurality of supported virtual channels are associated with one bit flag to support them together. 1252002 22. The machine-accessible medium according to claim 21 of the patent application scope, further comprising: storing the declared bit flag in a memory. 23. A machine accessible medium comprising content useful for issuing a virtual channel support signal, wherein the content, when executed by a machine, causes the 5 machine to: Exchanging data packets between two nodes on a peer-to-peer communication link, wherein the content of each exchanged data packet indicates whether each node has sufficient resources to support a particular type of such point-to-point communication link One or more virtual channels; and 10, in response to the exchanged data packet content, signaling that the two nodes collectively support the one or more virtual channels of a particular type. 24. The machine-accessible medium according to claim 23, wherein the step of supporting both of the transmissions comprises a node signing a bit flag associated with one or more supported virtual channels of a particular type. Mark to send a support 15 aid. 25. The machine-accessible medium of claim 24, wherein the announcement of the bit flag includes a meta-flag in a memory associated with the node. 20 26