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Packet forwarding method and edge equipment

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Publication number
CN102571610A
CN102571610A CN 201210053926 CN201210053926A CN102571610A CN 102571610 A CN102571610 A CN 102571610A CN 201210053926 CN201210053926 CN 201210053926 CN 201210053926 A CN201210053926 A CN 201210053926A CN 102571610 A CN102571610 A CN 102571610A
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interface
board
specification
high
edge
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CN 201210053926
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Chinese (zh)
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宋小恒
郑国良
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杭州华三通信技术有限公司
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Abstract

The invention provides a packet forwarding method and edge equipment. A low-specification interface board of the edge equipment receives packets sending by a user side to remote sites and queries an own media access control (MAC) hardware table; if the query fails, the packet is transmitted to a high-specification interface board of the edge equipment and sent out from a loopback port of the high-specification interface board; the high-specification interface board of the edge equipment receives the packets which are sent out from the loopback port and enter again and queries an own MAC hardware table; and if the query succeeds, the packets are sent to the remote sites according to export information recorded in the own MAC hardware table of the high-specification interface board. By adopting the scheme provided by the invention, the low-specification interface board and the high-specification interface board can be mixed for use, and the packets can be accurately forwarded as well, so that resources can be greatly saved.

Description

一种报文转发方法和边缘设备技术领域[0001] 本发明涉及通信领域,特别涉及一种报文转发方法和边缘设备。 One kind of edge message forwarding method and apparatus TECHNICAL FIELD [0001] The present invention relates to the field of communications, particularly to a packet forwarding method and edge device. 背景技术[0002] 现有技术中,可利用公网将若干私网互联,私网和私网之间可以更加安全、方便地通信。 [0002] In the prior art, may utilize the public network to the private network between a plurality of Internet, private networks and private networks can be more secure, convenient communication. 当然,私网侧的报文要进入公网,或者公网侧的报文要进入私网则是通过边缘设备来转发的。 Of course, the packet enters the private network to public network, the public packet network or to enter the private network side is forwarded by edge device. [0003] 边缘设备中有主控板和若干接口板,每个接口板上都有媒体接入控制(MAC)硬件表,接口板就是通过自身的MAC硬件表来转发报文的。 [0003] The edge device has a main board and a plurality of interface boards, each interface board has a Media Access Control (MAC) hardware table, the interface board is through its MAC hardware packet forwarding table. 不同规格的接口板,其MAC硬件表的容量也不同。 Different specifications of the interface board, the capacity of which is different MAC hardware table. 低规格接口板的MAC硬件表容量小,可保存较少的MAC地址。 Table MAC hardware interface board specifications low capacity is small, less MAC addresses can be stored. 高规格接口板的MAC硬件表容量大,可保存较多的MAC地址。 Table MAC hardware interface board high-capacity, more MAC addresses can be stored. [0004] 但某些应用场景中,比如:网络系统中有大量的MAC地址,边缘设备必须维护所有的MAC地址,并且要求全局同步,才能正确地转发报文。 [0004] However, in some scenarios, such as: network system has a large number of MAC addresses, edge devices must maintain all MAC addresses, and require global synchronization, can forward packets correctly. 这种情况下,边缘设备的所有接口板必须保存同样数量的MAC地址。 In this case, all edges of the device interface board must be kept the same number of MAC addresses. 由于网络系统中MAC数量很多,低规格接口板的MAC硬件表容量又小,因此只能将边缘设备中所有接口板都配置成高规格接口板才能满足需求。 Because many network system, the number of MAC, MAC hardware table LPU low capacity and small size, so only the edge device interface boards are all high-interface board configured to meet demand. 这样一来,势必会丢弃边缘设备原有的低规格接口板,造成严重的资源浪费。 As a result, the edge is bound to discard the original equipment specification low interface board, causing serious waste of resources. 发明内容[0005] 本发明提供了一种报文转发方法和边缘设备,可以混合使用低规格接口板和高规格接口板,达到节约资源的目的。 SUMMARY OF THE INVENTION [0005] The present invention provides a packet forwarding method and edge device, can be mixed with low-and high-standard compliant interface board interface board, to achieve the purpose of saving resources. [0006] 针对上述第一个发明目的,本发明提出的技术方案为:[0007] —种报文转发方法,该方法包括:[0008] 边缘设备的第一接口板接收到用户侧发送给远端站点的报文,利用该报文查询第一接口板自身的媒体接入控制MAC硬件表,所述第一接口板与用户侧相连,其自身的MAC硬件表用于保存本地站点的MAC地址,在未命中时,将该报文传输给边缘设备的第二接口板, 从第二接口板的环回口发送出去;[0009] 边缘设备的第二接口板接收到从环回口发送后且再次进入的报文,利用该报文查询第二接口板自身的MAC硬件表,所述第二接口板自身的MAC硬件表用于保存本地站点和远端站点的MAC地址,在命中时,根据所述第二接口板自身的MAC硬件表记录的出口信息将该报文发送给远端站点。 [0006] The first object of the invention for the above, the technical solutions proposed by the invention is: [0007] - seed packet forwarding, the method comprising: [0008] a first edge device receives the user interface board to a far side packet end site, using the first query packet interface board itself media access control MAC hardware table, the first interface board is connected to the user side, its own MAC hardware table for storing the MAC address of the local site after the [0009] second edge device interface board is received from the loopback interface transmission; in a miss, the message transmitted to the second edge device interface board, transmitted from the second port loopback interface board and re-entering the message, using a second query message its MAC hardware interface board table, and the second hardware interface board itself MAC table for storing the local site and remote site MAC address, when hit, the message is sent to the remote site according to the information of the second outlet itself MAC hardware interface board table records. [0010] 针对上述第二个发明目的,本发明提出的技术方案为:[0011] 一种边缘设备,包括主控板和接口板,所述接口板包括:第一接口板和第二接口板;[0012] 所述第一接口板,在接收到用户侧发送给远端站点的报文时,利用该报文查询第一接口板自身的媒体接入控制MAC硬件表,所述第一接口板与用户侧相连,自身的MAC硬件表用于保存本地站点的MAC地址,在未命中时,将该报文传输给第二接口板;[0013] 所述第二接口板,将来自第一接口板的报文从环回口发送出去,接收到从环回口发送后且再次进入的报文时,利用该报文查询第二接口板自身的MAC硬件表,所述第二接口板与公网侧相连,其自身的MAC硬件表用于保存本地站点和远端站点的MAC地址,在命中时,根据所述第二接口板自身的MAC硬件表记录的出口信息将该报文发送给远端站点。 [0010] In view of the above second object of the invention, the technical solution proposed by the invention is: [0011] An edge device comprising main control board and an interface board, the interface board comprising: a first interface board and the second interface board ; [0012] the first interface board, when packets sent from the remote site to the user at the receiving side, a first query using the packet interface board itself media access control MAC hardware table, the first interface plate connected with users, its MAC hardware table for storing the MAC address of the local station, a miss, the second message transmitted to the interface board; [0013] the second interface board, from the first when the packets from the interface board loop back port sent, received from the loopback interface and re-transmitting incoming packets, a second query message using its MAC hardware interface board table, and the second interface board connected to the public network side, its own MAC hardware table for storing the local site and remote site MAC address, when hit, information according to the second outlet of its own MAC hardware interface board table records will be sent to the packet the remote site. [0014] 本发明提供一种报文转发方法和边缘设备,将第一接口板和第二接口板混合使用,第一接口板的MAC硬件表只保存本地站点的MAC地址,第二接口板的MAC硬件表保存本地站点和远端站点的MAC地址。 [0014] The present invention provides a method and a MAC address forwarding edge device, the first interface board and the second interface board in combination, the first interface board MAC hardware table stored in the local site only packets, the second interface board MAC hardware MAC address table holds the local site and remote site. 当用户侧报文要发送给公网侧时,没命中第一接口板MAC 硬件表时,利用第二接口板环回口的作用来再次查找第二接口板MAC硬件表,正确地转发报文,从而实现第一、第二接口板的混合使用,大大节约资源。 When the user packets to be sent to the public network side, not the first hit table MAC hardware interface board, using the second port of the loopback interface board to find the effect of a second MAC hardware interface board table again, correctly forward packets in order to achieve the first, second hybrid interface board, greatly conserve resources. 附图说明[0015] 图1是本发明提出的边缘设备结构示意图。 BRIEF DESCRIPTION [0015] FIG. 1 is a schematic view of the device edge structure proposed by the present invention. [0016] 图2是本发明实施例中以太网连接虚拟化(EVI)网络的示意图。 [0016] FIG. 2 is a schematic diagram of a virtual Ethernet connection (EVI) network in the embodiments of the present invention. [0017] 图3是本发明实施例中边缘设备的内部结构示意图。 [0017] FIG. 3 is a schematic view of an internal structure of the apparatus of the embodiment of the present invention is an edge. [0018] 图4是边缘设备中各接口板保存MAC地址的一个示例图。 [0018] FIG. 4 shows an example of interface boards each MAC address stored in edge devices. 具体实施方式[0019] 本发明提出一种报文转发方法,不需要在边缘设备中全部配置高规格的第二接口板,而是将原有的低规格的第一接口板和高规格的第二接口板混合使用,并且同样可以正确地转发报文,达到节约资源的目的。 DETAILED DESCRIPTION [0019] The present invention provides a proposed method for forwarding packet, need not all be arranged in the high-edge devices of the second interface board, instead of the original specification of the first lower interface board and a high standard of mixture of two interface board, and can also forward packets correctly to achieve the purpose of saving resources. [0020] 如图1所示,假设本发明的边缘设备包括主控板101、低规格接口板102和高规格接口板103。 [0020] 1, the apparatus of the present invention is assumed that the edge comprises a main control board 101, the interface board 102 and the low-spec high-standard interface board 103. 其中,主控板101作为边缘设备系统的控制中心,其功能属于现有技术,此处不详细介绍。 Wherein the control board edge device 101 as the control center of the system, its function belongs to the prior art, not described in detail here. 另外,为描述方便,以下实施例中所述低规格接口板就是指第一接口板,高规格接口板就是指第二接口板。 Further, for the convenience of description, the following embodiments described in the specification interface board is low means that the first interface board, the interface board high specification refers to the second interface board. [0021] 低规格接口板102在接收到用户侧发送给远端站点的报文时,利用该报文查询低规格接口板自身的MAC硬件表,低规格接口板自身的MAC硬件表用于保存本地站点的MAC 地址,在未命中时,将该报文传输给高规格接口板103。 When the [0021] low gauge interface board 102 to a packet in the remote site receiving the user side, the use of low specification query message its MAC hardware interface board table, low-spec hardware interface board its MAC table for storing MAC address of the local station, a miss, the message transmitted to the high-standard interface board 103. [0022] 高规格接口板103将来自低规格接口板102的报文从环回口发送出去,接收到从环回口发送后且再次进入的报文时,利用该报文查询高规格接口板103自身的MAC硬件表, 所述高规格接口板103自身的MAC硬件表用于保存本地站点和远端站点的MAC地址,在命中时,根据高规格接口板103自身的MAC硬件表记录的出口信息将该报文发送给远端站点。 When the [0022] high-interface board 103 from the packet interface board 102 of low specification sent out from the loopback interface, received from the loopback interface and re-transmitting incoming packets, using high-query packet interface board its MAC hardware table 103, the high-standard interface board 103 itself MAC hardware table for storing the local site and remote site MAC address, when hit, its MAC outlet table records the hardware specifications of the interface board 103 according to the high the information packet is sent to the remote site. [0023] 也就是说,本发明的技术方案可以这样实现:[0024] 在边缘设备中混合使用低规格接口板和高规格接口板,每个接口板中都含有自身的MAC硬件表。 [0023] That is, the aspect of the present invention can be achieved by: [0024] a mixture of low and high-standard compliant interface board interface board in the edge devices, each interface board contains its own MAC hardware table. 其中,低规格接口板的MAC硬件表保存本地站点的MAC地址,高规格接口板的MAC硬件表保存本地站点和远端站点的MAC地址。 Wherein, MAC hardware specifications of the interface board low table stored local site MAC address, MAC hardware interface board high-table stored MAC address of the local site and the remote site. 当低规格接口板接收到用户侧发送给远端站点的报文时,利用该报文查询低规格接口板自身的MAC硬件表。 When the low standard interface board receiving the message sent to the user side of the remote site, using a low-spec Query message its MAC hardware interface board table. 由于低规格接口板的MAC硬件表保存的是本地站点的MAC地址,不会命中,再将该报文传输给高规格接口板, 从高规格接口板的环回口发送出去。 Since the stored MAC hardware specifications of the interface board lower table is the MAC address of the local site, it does not hit, then the packet is transmitted to the high-standard interface board, the interface board from the ring of high-sent back to port. 报文从环回口再次进入后,高规格接口板利用该报文查询自身的MAC硬件表,命中时,根据记录的出口信息将该报文发送给远端站点。 After the message from the loopback interface to re-enter, high-packet interface board use its MAC hardware query table, when hit, exports recorded information packet will be sent to the remote site based on. [0025] 由于边缘设备并不全部使用高规格接口板,而是将原有的低规格接口板和高规格接口板混合使用,但通过巧妙使用环回口的作用,同样可以正确地转发报文,以此达到节约资源的目的。 [0025] Since not all of the edge device interface board using a high standard, but the original size of the low and high-standard interface board interface board in combination, but by the clever use of loopback interface role, the same packet can be forwarded correctly in order to achieve the purpose of saving resources. [0026] 为了更好的说明本发明方案,下面用较佳实施例进行详细描述。 [0026] In order to better illustrate the present invention, the following preferred embodiments described in detail by Examples. [0027] 本实施例中,假设边缘设备是以太网连接虚拟化(EVI)网络中的边缘设备(ED)。 [0027] In this embodiment, an edge is assumed that the device is an Ethernet virtual connection (EVI) edge device (ED) in the network. EVI网络是一种可以将异地部署的多个数据中心这类私网连接起来的网络,可通过虚拟机在数据中心之间进行自由迁移,以实现负载分担和高可靠性等目的。 EVI network is a network comprising a plurality of data centers remote deployment of such private network can be connected together, can be freely migrate between the data center via the virtual machine, in order to achieve the purpose of load balancing and high reliability. [0028] 图2是EVI网络的示意图。 [0028] FIG. 2 is a schematic diagram EVI network. 如图所示,EVI网络由核心网络和若干站点网络组成, 站点网络就是部署各地的数据中心,属于私网,核心网络就是公网,即若干私网通过公网连接起来。 As shown in FIG, EVI network by the core network and a network composed of several sites, the site network is deployed throughout the data center, belongs to the private network, the core network is a public network, i.e., a number of private networks are connected public network. 站点网络包括边缘网络和接入网络,其中,边缘网络指汇聚设备与边缘设备之间的网络,接入网络指接入设备与汇聚设备之间的网络。 Site network and access networks including an edge, wherein the edge of the network refers to a network between the device and the aggregation edge device, an access network refers to a network between the access device and the aggregation device. 与其他如虚拟专用局域网(VPLQ等现有的虚拟网络技术相似,EVI也可以实现虚拟局域网(VLAN)在不同站点间的扩展功能,这些扩充的VLAN上构成独立的EVI网络实例,不同EVI实例的VLAN内转发相互隔离。当然, 本实施例中所述的EVI与VPLS等其他技术也有区别,但与本发明方案实质不相关,这里不再详细描述。[0029] 图3是边缘设备ED的结构示意图,本实施例主要描述ED中如何实现一个EVI实例内的报文转发。如图3所示,ED包括:[0030] 低规格接口板1〜4,高规格接口板1〜2,各个接口板之间可以从内部通道交互。 当然,实际应用中,低规格接口板和高规格接口板的个数不限,可以为M个和N个,只要M、N 是大于或等于1的整数即可。[0031] 与现有接口板技术一样,本实施例的每个接口板上包括若干物理的端口、CPU、转发芯片以及MAC硬件表等(图中未画出)。另外,与现 As with other similar virtual private LAN (VPLQ other existing virtual network technology, may be implemented EVI virtual local area network (VLAN) extension between different sites, constitute an independent network EVI Examples of the VLAN on these extensions, different instances of EVI forwarding the isolated VLAN. of course, other techniques described in the present embodiment such as VPLS and EVI there are differences, but not with the spirit of the present invention embodiment, not described in detail herein. [0029] FIG. 3 is a configuration of an edge device ED a schematic view of the present embodiment is mainly described embodiment ED how packets within a forward EVI example shown in FIG. 3, ED comprising: [0030] 1 ~ 4 low gauge interface board, high-interface board 1 to 2, each interface internal passage from the interactive course, the practical application, the low and high-standard specifications of the interface board is not limited to the number of the interface board between the plates, i.e. can is M and N, as long as an integer M, N is equal to or greater than 1, may be [0031] as with the prior art interface boards, each interface board according to the present embodiment includes a plurality of physical ports, CPU, and a MAC chip hardware forwarding table or the like (not shown). Further, the current 技术相同,ED还包括主控板,但不涉及本实施例的方案,这里也不再详细描述。[0032] 本实施例中,低规格接口板上的MAC硬件表容量小,其范围可以是几十K〜一百多K,仅保存本地站点的MAC地址,所述低规格接口板即第一接口板,与用户侧相连,而不与公网侧相连。而高规格接口板上的MAC硬件表容量大,范围是IM〜几十M,既保存本地站点的MAC地址,还保存远端站点的MAC地址(EVI实例内的所有的MAC地址),所述高规格接口板即第二接口板,与公网侧相连,而不与用户侧相连。这里所谓本地站点的MAC地址是指边缘设备从本地用户侧学习到的MAC地址,其方法与现有技术相同。所谓远端站点的MAC地址是指边缘设备从公网侧学习到的MAC地址,可以通过如中间系统到中间系统(ISIS)协议来完成。[0033] 如何进行MAC学习,下面从用户侧VLAN内的MAC学习和公网侧的MAC学习 The same technique, further comprising a control board ED, but no program according to the present embodiment, also not described in detail herein. [0032] embodiment, a small-capacity low-specification table MAC hardware interface board to the present embodiment, it may range K~ several hundred K, only the MAC address stored local site, i.e., the first low specification interface board interface board connected to the user side, not connected with the public network side and the high-standard MAC interface board hardware table capacity, the range of several tens of M IM~, both to save the MAC address of the local site, also stores the MAC address (MAC address in all instances EVI) of the remote site, i.e., the second high-interface board Interface plate, and is connected to the public network side, not connected to the user side. MAC address here, the term refers to an edge of the local site from the local device to learn the MAC address to the user side, which is the same as the prior art method. a remote station MAC address is an edge device learns from the public network side to the MAC address, can be accomplished by such as intermediate system to intermediate system (the ISIS) protocol. [0033] how the MAC address learning, following from the user side of a VLAN MAC learning and public network MAC learning side 两个方面进行详细描述。[0034] 一、用户侧VLAN内的MAC学习,仅限于低规格接口板。其方法与现有技术相同, 即:某个VLAN内,若属于该VLAN的某个端口接到用户侧报文,从该报文中解析出VLAN号、 源MAC地址等信息,将该VLAN号、源MAC地址和接收该报文的端口记录下来,下发到自身的MAC硬件表中。[0035] 比如:以图3为例,假设低规格接口板1的端口1属于VLAN100,接收到用户侧的报文后,解析出其VLAN号为VLAN100,源MAC地址是MACl,于是将VLAWOO、MACl和端口1等信息下发到低规格接口板1的MAC硬件表中: [0036] Both described in detail [0034] First, the MAC learning the user-side VLAN, interface board is limited to a low size which the prior art method of the same, namely: within a VLAN, when a port in the VLAN receiving user packets, parsed from the packet out the VLAN number, a source MAC address, the VLAN ID, MAC address, and source port received packet record, issued to the MAC hardware table [0035] For example: 3 as an example, assume that the low port interface board specifications 1 belong to VLANs 100, receives a message from the user side, the parsing of VLANs 100 to the VLAN number, source MAC address MACl, will then VLAWOO , the MACl and port information sent to a lower MAC hardware specifications of the interface board in table 1: [0036]

VLAN 号 MAC地址 出口信息 • ·. VLAN100 MACl 端口1 • ·. • ·. • ·. • ·. VLAN number MAC address export • ·. VLAN100 MACl port 1 • ·. • ·. • ·. • ·.

[0037]表一 [0037] Table I

[0038] 当某个低规格接口板学习到某个MAC地址后,还需要同步给其他的低规格接口板,这分为两种情况: [0038] When a low-spec interface board to a learned MAC address, also need to be synchronized to the other low specification interface board, which is divided into two cases:

[0039] 情况一:如果其它低规格接口板也包括本VLAN的成员口,不管用户侧报文进入低规格接口板的入端口是聚合口还是非聚合口,需要将学习到的MAC地址同步给包含本VLAN 其他成员口所在的其它低规格接口板。 [0039] Case 1: If other low specification interface board also includes members of the orifice of the VLAN, regardless of user packets into the low standard interface board ingress port polymeric port or a non-polymeric port, need to learn the MAC address synchronous to this VLAN contains other low standard interface board other members of the port is located.

[0040] 比如:在上述的这个例子中,假设低规格接口板2的端口2也属于VLAN100的成员口,但低规格接口板3和4中不包括VLAN100的成员口。 [0040] For example: In the example above, assume that the low interface board specifications 2 port 2 also is a member of VLAN100 mouth, but low gauge interface boards 3 and 4 do not include members of VLAN100 port. 那么,需要将学习到的MACl同步给低规格接口板2,但无需同步给低规格接口板3和4。 So, you need to learn to MACl synchronous interface board to the low specification 2, but without synchronization to the low standard interface boards 3 and 4.

[0041] 情况二:如果学习MAC地址时,用户侧报文进入低规格接口板的入端口是聚合口, 为更好地保证流量不丢失,不但需要将学习到的MAC地址同步给包含本VLAN成员口的其它低规格接口板,还需要同步给其他未包含本VLAN成员口的低规格接口板,即:需要同步给其他所有的低规格接口板。 [0041] Case 2: If the learned MAC address, user packets into the ingress port interface board specifications low opening polymerization, in order to better ensure that the flow is not lost, not only need to learn the MAC address to the synchronization comprising the VLAN other low interface board member interface specifications, also need to be synchronized to another non-low gauge interface board comprising the port VLAN membership, namely: the need to synchronize all other low interface board specifications.

[0042] 比如:假设低规格接口板1的端口2是聚合口,且属于VLAN200的成员口,那么,不管低规格接口板2、3、4是否包含VLAN200的成员口,都需要将学习到的MAC2同步给低规格接口板2、3、4。 [0042] For example: Suppose a low gauge port interface board 2 is polymerized mouth, and the mouth are members VLAN200, then, regardless of the specifications of the interface board lower member contains 2,3,4 VLAN200 port, you need to learn MAC2 to the low synchronization 2,3,4 interface board specifications.

[0043] 上述是将本地站点用户侧MAC地址同步给低规格接口板的情况。 [0043] The user is a local site to a low-side MAC address synchronous interface board specifications situation. 另外,由于高规格接口板需要保存EVI实例中所有的MAC地址,因此,低规格接口板还需要将学习到的MAC 地址同步给所有的高规格接口板。 Further, since the high-standard interface board needs to save all MAC addresses EVI example, therefore, low gauge interface board also need to learn the MAC address to all the high-standard synchronous interface board. 比如:在上述的这两个例子中,低规格接口1需要将学习到的MACl同步给高规格接口板1和2,低规格接口板2也需要将学习到的MAC2同步给高规格接口板1和2。 For example: In the two examples above, a low interface specifications need to learn the high-MACl synchronous interface boards 1 and 2, low gauge interface board 2 also needs to be learned MAC2 synchronous interface board 1 to a high standard of and 2.

[0044] 二、公网侧的MAC学习仅限于高规格接口板,其方法也与现有技术相似,即:本地站点的高规格接口板通过ISIS协议学习到远端站点发布的信息,将获得的VLAN号、MAC地址、隧道出接口等信息下发到自身的MAC硬件表中。 [0044] bis, the MAC learning is limited to the public network interface board high specification, which is also similar to the prior art method, namely: high-local site by ISIS protocol interface board learning remote site to information published obtain the VLAN ID information, MAC address, the tunnel interface hardware sent to the MAC table.

[0045] 比如:以图3为例,假设高规格接口板1通过ISIS协议学习到远端站点发布的信息,获知VLAN号为VLAN300,MAC地址为MAC3,隧道出接口为接口3,则下发到自身的MAC硬件表中为:[0046] [0045] For example: 3 as an example, assume that high-1 interface board to the ISIS protocol information learned through the distal end of the release site, known as the VLAN ID VLAN300, MAC address MAC3, a tunnel interface is the interface 3, is issued to the MAC hardware table is: [0046]

Figure CN102571610AD00081

[0047]表二 [0047] Table II

[0048] 需要注意的是,高规格接口板中记录的出口信息与低规格接口板记录的出口信息含义不一样。 [0048] It should be noted that the meaning of high-profile export interface board in record export record low standard interface board is not the same. 在低规格接口板中,出口信息是低规格接口板的端口号,也就是学习MAC地址时接收其报文的入端口,是物理端口。 In the low-specification in the interface board, the port number information is a low outlet specifications of the interface board, which is received packets into MAC address learning port is a physical port. 而高规格接口板中,出口信息是隧道出接口,是由远端站点发布过来的,是逻辑接口,其具体内容包括隧道头部、公网的出VLAN号、公网的出端口^fn 息。 And the high standard interface board, an interface to the tunnel exit information is issued by the remote site over, is a logical interface, which specifically includes an egress port VLAN ID ^ fn tunnel header information, the public network, the public network .

[0049] 另夕卜,由于高规格接口板要保存EVI实例内所有的MAC地址,因此学习到公网侧的MAC地址后,还需要同步给其他所有的高规格接口板。 After [0049] Another Bu Xi, due to the high standard interface board to save all MAC addresses EVI example, and thus learns the MAC address of the public network side, but also need to be synchronized to all other high-standard interface board.

[0050] 上面关于学习到MACl〜MAC3的例子执行后,各接口板保存MAC地址的示例如图4所示。 Examples Example [0050] above with respect to the execution of the learn MACl~MAC3, each interface board to save the MAC address as shown in FIG. 其中,MACl保存在低规格接口板1和2,以及高规格接口板1和2中,MAC2保存在所有的低规格接口板和高规格接口板中,MAC3仅保存在所有的高规格接口板中。 Wherein, MACl stored in the lower specification interface board 12, and the high-standard interface boards 1 and and 2 MAC2 is stored in all of the low standard interface board and high-standard interface board, MAC3 saved only in all high-Interface board .

[0051] 以上是关于接口板学习以及同步MAC地址的部分,下面进一步介绍报文转发的部分。 [0051] upper part of the synchronization on the interface board, and the MAC address learning, forwarding packets further described below in the section.

[0052] 仍然参考图3,假设低规格接口板1的端口1接收到用户侧报文,该报文需要发送给远端站点,还假设未知单播的广播出接口被设置为高规格接口板1的环回口。 [0052] Still referring to Figure 3, assuming low gauge port 11 of the interface board receives user packets, the packet to be transmitted to the remote site, is also assumed that a broadcast and unknown unicast interface is set to a high standard interface board 1 loop back to port. 该方法包括: The method comprising:

[0053] Sl :低规格接口板1从端口1接收到用户侧发送给远端站点的报文,触发EVI实例内的MAC查找,即:利用该报文中的目的MAC地址查询低规格接口板1自身的MAC硬件表。 [0053] Sl: low specification received from the interface board 1 to the port 1 side transmits the user packets to the remote sites, to find the MAC triggers the EVI instance, namely: using the destination MAC address in the query packet interface board specifications low table 1 MAC hardware itself. 这里,由于本实施例中的低规格接口板1仅保存了本地站点的MAC地址,查询自然不会命中。 Here, since the present embodiment 1 only low specifications of the interface board to save the MAC address of the local site, the query naturally not hit.

[0054] S2 :未命中时,低规格接口板1将该报文在本VLAN内广播。 [0054] S2: When a miss, low gauge interface board 1 will broadcast the packet within the VLAN. 本实施例将未知的单播报文的广播出接口设置为高规格接口板的环回口,那么,报文在本VLAN内广播实际上是通过内部通道传输给高规格接口板1,并从高规格接口板1的环回口发送出去。 This embodiment will be an unknown unicast packet radio interface is set to a high-port loopback interface board, then the packets broadcast in the VLAN actually transmitted through the internal passage to the high-standard interface board 1, and from the high Specifications loopback interface board is sent out port 1.

[0055] 本步骤是假设将报文传送给高规格接口板1,但实际应用中还可以设置成传输给其他高规格接口板。 [0055] The present step is assumed that the packet to the high-standard interface board 1, but actual application may also be configured to transmit to other high-interface board. 或者,为了负载分担的原因,还可以将所有的高规格板的环回口设置为聚合口,并通过哈希运算确定应该将报文传输给哪个高规格接口板的环回口。 Alternatively, for reasons of load balancing, it may also be the loopback of all high-board port is provided opening polymerization, and should be determined packets to the loop interface board which the high-back opening through hashing.

[0056] 需要注意到是,环回口是接口板中转发芯片内部的环回电路,从该口出去的报文将直接返回,不会从接口板对外的物理端口发送出去。 [0056] The need is noted, loopback interface loopback interface circuit transponder chip board, away from the direct port packets returned from the interface board will not be made to send out the physical port.

[0057] S3 :高规格接口板1接收到从环回口发送后且再次进入的报文,触发EVI实例内的MAC查找,S卩:利用该报文中的目的MAC地址查询高规格接口板1自身的MAC硬件表。 [0057] S3: high-1 interface board is received from the loopback port and re-transmitting incoming packets, triggering MAC lookup in EVI example, S Jie: using the destination MAC address in the query packet interface board high- table 1 MAC hardware itself. 这里, 从环回口重新进入的报文将会被高规格接口板1当作新接收到的报文一样处理。 Here, from the loopback interface to re-enter the message will be high-profile interface board 1 as a new message is received the same treatment.

[0058] S4 :命中时,高规格接口板1根据自身的MAC硬件表记录的出口信息将该报文发送给远端站点。 [0058] S4: when hit, high-1 interface board information table records the exit message is sent to the remote site based on their MAC hardware. 正如前面MAC学习部分描述的,高规格接口板的MAC硬件表会记录VLAN号、 MAC地址、隧道出接口等信息,将报文发送给远端站点之前需要从隧道出接口信息中获取如隧道头部、公网出端口等信息,然后根据这些信息进行报文封装后,从高规格接口板1的出端口发送到公网。 As previously described in the MAC learning section, high-MAC hardware interface board table records the VLAN ID information, MAC address, the tunnel interface, and sends the packet to the tunnel requires from a remote site before obtaining interface information such as the tunnel header information unit, a public network ports, etc., and then according to the information packet encapsulation, transmitted from the port high standard interface board 1 to the public network.

[0059] 上面步骤S4是高规格接口板查找MAC地址命中的情况,实际应用中,如果未命中, 则需要在整个VEI实例内广播,S卩:高规格接口板1公网侧所有的隧道出接口都会转发该报文。 [0059] The above step S4 is a high-interface board to find the MAC address hits, the practical application, if a miss, it is necessary broadcast throughout the VEI example, S Jie: All tunnels high-interface board 1 on the public network side of the the interface will forward the packet. 此外,用户侧本VLAN所有的成员口也会转发该报文,S卩:低规格接口板所有该VLAN的成员口都会转发该报文。 Further, the user-side ports all members of this VLAN packet will be forwarded, S Jie: low gauge interface board for all members of the VLAN port will forward the packet.

[0060] 参考图3,如果高规格接口板1端口1接收到公网侧报文,该报文需要发送给本地站点的用户侧,该方法包括: [0060] Referring to FIG 3, if the high-side user interface board 1 1 ports of the public network side receives the packet, the packet to be transmitted to the local station, the method comprising:

[0061] Dl :高规格接口板1接收到公网侧发送给本地站点用户侧的报文,触发EVI实例内的MAC查找:利用该报文查询高规格接口板1自身的MAC硬件表。 [0061] Dl: high-1 interface board to the public network side receives packets sent from the user side of the local site, the MAC triggers the lookup EVI instance: using high-query message its MAC hardware interface board in Table 1.

[0062] 由于从公网侧接收到的报文是经过隧道封装的,实际应用中需要解封装后再查MAC硬件表,比如:如果隧道采用IP GRE隧道,那么就需要先执行弹出IP GRE隧道的操作, 之后再进行MAC查找,这是本领域技术人员公知的,此处不再详细描述。 [0062] received from the public network side due to a tunneled encapsulated packet, the actual application needs to check later decapsulated MAC hardware table, such as: if the IP GRE tunnel using a tunnel, then the need to perform the eject IP GRE tunnel operation, then after the MAC lookup, which is well known to the skilled person, and not described in detail herein.

[0063] D2 :如果命中,将根据高规格接口板1自身的MAC硬件表记录的出口信息将该报文转发给本地站点用户侧,并结束本流程。 [0063] D2: if hit, the export information table records forwards the message to the user side of the local site based on their high-MAC hardware interface board 1, and the process ends.

[0064] 由于报文的目的MAC地址是本地站点用户侧的MAC地址,那么对应的出口信息应该是低规格接口板的端口,比如是低规格接口板1的端口1。 [0064] Since the packet destination MAC address is the MAC address of the local site the user side, the information corresponding to the outlet port should be low specification interface board, such as a low-spec port 11 of the interface board. 高规格接口板1就应该通过内部通道将报文发送给低规格接口板1,再由低规格接口板1从端口1转发给用户侧。 High-interface board 1 should be sent to a low packet interface board specifications 1 through the internal channel, then a low-specification forwarded by the interface board from the port 1 to the user side.

[0065] D3 :如果未命中,则将该报文在本VLAN内广播,即:所有低规格接口板上属于该VLAN的成员口都会将该报文转发给用户侧,然后结束本流程。 [0065] D3: If a miss, the packet is broadcast in the VLAN, namely: low specification all belong to the VLAN interface board members are port forwards the packet to the user side, then the process ends.

[0066] 本步骤在VLAN内广播是因为来自公网侧的报文应该发送给本地站点用户侧,仅需要通过该VLAN的成员口转发,而且由于水平分割的原因,高规格接口板也不会转发给公网侧。 [0066] This is because the step of broadcasting messages from the public network side of the local site should be sent to the user side, only by members of the VLAN forwarding port in the VLAN, but due to segmentation level, the interface board will not be high specification forwarded to the public network side.

[0067] 本实施例是以EVI中边缘设备为例进行介绍本发明方案的,但实际应用中,也可以在其他网络设备上实施,比如VPLS上的边缘设备PE等,并不受本发明实施例的限制。 [0067] In the present embodiment, the edge device based on EVI introduces an example embodiment of the present invention, but the practical application, can be implemented on other network devices, such as an edge device on the VPLS like PE, embodiments of the present invention is not subject to limiting example.

[0068] 应用本发明方案,可以将原有的低规格接口板和新增加的高规格接口板混合使用,但同样可以正确转发报文,从而实现了节约资源的目的。 [0068] The applications of the present invention, the original specifications of the interface board and the lower newly added interface board high-mix, but also correctly forward packets, thus achieving the purpose of saving resources.

[0069] 以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内,所做的任何修改、等同替换、改进等,均应包含在本发明保护的范围之内。 [0069] The foregoing is only preferred embodiments of the present invention but are not intended to limit the present invention, all within the spirit and principle of the present invention, any changes made, equivalent substitutions and improvements should be included within the scope of protection of the present invention.

Claims (13)

1. 一种报文转发方法,其特征在于,该方法包括:边缘设备的第一接口板接收到用户侧发送给远端站点的报文,利用该报文查询第一接口板自身的媒体接入控制MAC硬件表,所述第一接口板与用户侧相连,其自身的MAC硬件表用于保存本地站点的MAC地址,在未命中时,将该报文传输给边缘设备的第二接口板,从第二接口板的环回口发送出去;边缘设备的第二接口板接收到从环回口发送后且再次进入的报文,利用该报文查询第二接口板自身的MAC硬件表,所述第二接口板与公网侧相连,其自身的MAC硬件表用于保存本地站点和远端站点的MAC地址,在命中时,根据所述第二接口板自身的MAC硬件表记录的出口信息将该报文发送给远端站点。 A packet forwarding method, characterized in that, the method comprising: a first edge device receives a packet interface board transmitting the user side to the remote site, the first query message using its own media access interface board the MAC hardware control table, the first interface board is connected to the user side, its own MAC hardware table for storing the MAC address of the local station, a miss, the transmission of the second packet to the edge device interface board , transmitted from the second port loopback interface board; a second edge device from the interface board receives the loopback port and re-transmitting incoming packets, a second query message using its MAC hardware interface board table, the second interface board is connected to the public network, its own MAC hardware table for storing the local site and remote site MAC address, when hit, based on the second table records MAC hardware interface board itself outlet the information packet is sent to the remote site.
2.根据权利要求1所述的方法,其特征在于,所述边缘设备是以太网连接虚拟化EVI网络中的边缘设备,所述EVI用于将多个数据中心互联。 2. The method according to claim 1, characterized in that the edge is an edge apparatus connected to the virtualization device EVI Ethernet network, the plurality of data centers for EVI interconnected.
3.根据权利要求1所述的方法,其特征在于,该方法进一步包括:所述第二接口板接收到公网侧发送给本地站点的报文,利用该报文查询所述第二接口板自身的MAC硬件表,在命中时,根据所述第二接口板自身的MAC硬件表记录的出口信息将该报文转发给本地站点用户侧,在未命中时,将该报文在本虚拟局域网VLAN内广播。 3. The method according to claim 1, wherein the method further comprises: receiving the second interface to the public network side plate packet to the local site, using the second query packet interface board its MAC hardware table, when the hit information according to the second outlet of its own MAC hardware interface board table records the local station forwards the message to the user side, a miss, the packet will be present in the virtual local area network VLAN broadcast inside.
4.根据权利要求1所述的方法,其特征在于,边缘设备的第二接口板接收到从环回口发送后且再次进入的报文,且利用该报文查询第二接口板自身的MAC硬件表但未命中时,该方法进一步包括:所述第二接口板将该报文在本EVI实例内广播。 4. The method according to claim 1, wherein the second edge device from the interface board receives the loopback port and re-transmitting incoming packets, and using a second MAC query packet interface board itself hardware table but misses, the method further comprising: the second broadcast message to the interface board in the present example EVI.
5.根据权利要求1〜4任一项所述的方法,其特征在于,所述边缘设备包括M个第一接口板和N个第二接口板,所述M和N是大于或等于1的整数;当一个第一接口板学习到用户侧的MAC地址时,该方法进一步包括:该第一接口板将学习到的MAC地址下发到自身的MAC硬件表中,并将学习到的MAC地址同步给本VLAN其他成员口所在的其它第一接口板,且同步给所有的第二接口板。 The method according to any of claims 1 ~ 4, characterized in that said edge device comprises a first interface board of M and N second interface board, the M and N greater than or equal to 1 integer; when one of the first interface board side learns the MAC address of the user, the method further comprising: a first interface board which will be sent to the MAC hardware table under the learned MAC address, and MAC addresses learned other first synchronous interface board to the other members of the present VLAN port is located, and to synchronize all of the second interface board.
6.根据权利要求1〜4任一项所述的方法,其特征在于,所述边缘设备包括M个第一接口板和N个第二接口板,所述M和N是大于或等于1的整数;当一个第一接口板学习到用户侧的MAC地址,且用于学习MAC地址的报文是通过聚合属性的入端口进入第一接口板的,该方法进一步包括:该第一接口板将学习到的MAC地址下发到自身的MAC硬件表中,并将学习到的MAC地址同步给其它所有的第一接口板,且同步给所有的第二接口板。 6. The method according to any of claims 1 ~ 4, characterized in that said edge device comprises a first interface board of M and N second interface board, the M and N greater than or equal to 1 integer; when a first interface board learns the MAC address of the user side, and the packet for learning the MAC address is obtained by polymerization of a first property into the inlet port of the interface board, the method further comprising: the interface of the first plate the learned MAC address sent to the MAC hardware table and the learned MAC addresses synchronized to all other first interface board, and to synchronize all of the second interface board.
7.根据权利要求1〜4任一项所述的方法,其特征在于,所述边缘设备包括M个第一接口板和N个第二接口板,所述M和N是大于或等于1的整数;当一个第二接口板学习到公网侧的MAC地址,该方法进一步包括:该第二接口板将学习到的MAC地址下发到自身的MAC硬件表中,并将学习到的MAC地址同步给其它所有的第二接口板。 The method according to any of claims 1 ~ 4, characterized in that said edge device comprises a first interface board of M and N second interface board, the M and N greater than or equal to 1 integer; a second interface board when learns the MAC address of the public network side, the method further comprising: the second sent to the interface board will learn the MAC address of the own MAC hardware table and the learned MAC address all other synchronization to a second interface board.
8. —种边缘设备,包括主控板和接口板,其特征在于,所述接口板包括:第一接口板和第二接口板;所述第一接口板,在接收到用户侧发送给远端站点的报文时,利用该报文查询第一接口板自身的媒体接入控制MAC硬件表,所述第一接口板与用户侧相连,其自身的MAC硬件表用于保存本地站点的MAC地址,在未命中时,将该报文传输给第二接口板;所述第二接口板,将来自第一接口板的报文从环回口发送出去,接收到从环回口发送后且再次进入的报文时,利用该报文查询第一接口板自身的MAC硬件表,所述第一接口板与公网侧相连,其自身的MAC硬件表用于保存本地站点和远端站点的MAC地址,在命中时,根据所述第二接口板自身的MAC硬件表记录的出口信息将该报文发送给远端站点。 8. - kind of edge device, comprising a main control board and an interface board, characterized in that said interface board comprising: a first interface board and the second interface board; the first interface board, the user is sent to the receiving side to the remote end of the packet time site, using the first query packet interface board itself media access control MAC hardware table, the first interface board is connected to the user side, its own MAC hardware table configured to store a local site MAC address, a miss, the second message transmitted to the interface board; the second interface plate, the packets from the interface board from the first loop is sent back to the port, receives the transmission from the loopback interface and when re-entering the message, using a first query message its MAC hardware interface board table, the first interface board is connected to the public network, its own MAC hardware table for storing the local site and remote site MAC addresses, when the hit information according to the second outlet of its own MAC hardware interface board table records the packet is sent to the remote site.
9.根据权利要求8所述的设备,其特征在于,所述第二接口板进一步用于:接收到公网侧发送给本地站点的报文,利用该报文查询所述第二接口板自身的MAC硬件表,在命中时,根据所述第二接口板自身的MAC硬件表记录的出口信息将该报文转发给本地站点用户侧,在未命中时,将该报文在本虚拟局域网VLAN内广播。 9. The apparatus of claim 8, wherein the second interface board is further operable to: receive the message sent to the public network side of the local site, using the second query packet interface board itself the MAC hardware table, when the hit information according to the second outlet of its own MAC hardware interface board table records the local station forwards the message to the user side, a miss, the packet will be present in a VLAN within the broadcast.
10.根据权利要求8所述的设备,其特征在于,所述第二接口板进一步用于,接收到从环回口发送后且再次进入的报文,且利用该报文查询第二接口板自身的MAC硬件表但未命中时,将该报文在本EVI实例内广播。 10. The apparatus according to claim 8, wherein said second interface board is further configured to receive from the loopback interface and re-transmitting incoming packets, and using the second query packet interface board when its MAC hardware table but misses, the broadcast packet in this example EVI.
11.根据权利要求8〜10任一项所述的设备,其特征在于,所述第一接口板有M个,所述M是大于或等于1的整数;所述第一接口板进一步用于,当学习到用户侧的MAC地址时,将学习到的MAC地址下发到自身的MAC硬件表中,并将学习到的MAC地址同步给本VLAN其他成员口所在的其它第一接口板,且同步给所有的第二接口板。 11. The apparatus according to any of claims 8~10, wherein the first interface board has M, said M being an integer greater than or equal to 1; the first interface board is further for when the user learns the MAC address side, the learned MAC address under the other of the first interface board hardware sent to the MAC table and the learned MAC address synchronous to those other members of the VLAN port is located, and to synchronize all of the second interface board.
12.根据权利要求8〜10任一项所述的设备,其特征在于,所述第一接口板有M个,所述M是大于或等于1的整数;所述第一接口板进一步用于,学习到用户侧的MAC地址,且用于学习MAC地址的报文是通过聚合属性的入端口进入第一接口板的,将学习到的MAC地址下发到自身的MAC硬件表中,并将学习到的MAC地址同步给其它所有的第一接口板,且同步给所有的第二接口板。 12. The apparatus according to any of claims 8~10, wherein the first interface board has M, said M being an integer greater than or equal to 1; the first interface board is further for learn the MAC address to the user side, and the packets for learning the MAC address is to enter the first interface board, will be sent to the MAC hardware table of the MAC addresses learned by polymerization into the port attributes, and learned MAC addresses synchronized to all other first interface board, and to synchronize all of the second interface board.
13.根据权利要求8〜10任一项所述的设备,其特征在于,所述第二接口板有N个,所述N是大于或等于1的整数;所述第二接口板进一步用于,在学习到公网侧的MAC地址时,将学习到的MAC地址下发到自身的MAC硬件表中,并将学习到的MAC地址同步给其它所有的第二接口板。 13. The apparatus according to any of claims 8~10, wherein the second interface board with N, the N is an integer equal to or greater than 1; and the second interface board is further for next, the MAC address learning in the public network side, the learned MAC address sent to the MAC hardware table and the learned MAC addresses synchronized to all other second interface board.
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