Three-layer packet forwarding method and routing device and two-layer switch module

A switching module and message forwarding technology, applied in the field of data transmission, can solve the problems of not being able to meet the needs of layer 3 data message forwarding, not having the ability to forward large-flow data, and not being able to meet the performance needs of routers, etc., to achieve the goal of improving forwarding performance Effect

Active Publication Date: 2008-01-30
XINHUASAN INFORMATION TECH CO LTD
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Problems solved by technology

[0006] Existing switching chips are designed according to the requirements of ordinary switches. For ordinary switches, the data flow between the CPU and the switching port is limited to small flow protocol packets, so the CPU uplink port of the switching chip usually does not have a large flow rate. data transfer capability
For routers, in addition to the exchange of small traffic protocol packets between the CPU and the Laye

Method used

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  • Three-layer packet forwarding method and routing device and two-layer switch module
  • Three-layer packet forwarding method and routing device and two-layer switch module
  • Three-layer packet forwarding method and routing device and two-layer switch module

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Embodiment Construction

[0040] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0041] Fig. 2 is the flow chart of sending message on the switching chip that the embodiment of the present invention provides, as shown in Fig. 2, its specific steps are as follows:

[0042] Step 201: Add a high-speed data channel between the switch chip and the CPU of the routing device.

[0043] Step 202: Add the port leading to the high-speed data channel to all VLANs in the form of a tag; configure a static MAC address entry on the switch chip, and the MAC address information in the entry is the VLAN virtual interface MAC address information, and in the entry The outgoing port information is the port information leading to the high-speed data channel; it is set that the message sent to the port leading to the high-speed data channel must have a switch-specific identifier, which includes the incoming port information of the messag...

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Abstract

The invention discloses a three-layer message transmitting method which comprises that: a high speed data channel is arranged between a two-layer switch module of a route equipment and a CPU and the two-layer switch module and the CPU unicast message with three-layer interaction through the high-speed data channel. The invention also discloses a route equipment which comprises a two-layer switch module and a CPU and a high speed data channel is arranged between the two-layer switch module and the CPU, a two-layer switch module which comprises a switch chip and an Ethernet controller and a switch chip which comprises a static memory module of MAC list item and a processing module of packet forwarding. The invention improves the three-layer data packet transmitting performance of the two-layer switch module.

Description

technical field [0001] The invention relates to the technical field of data transmission, in particular to a three-layer message forwarding method, a routing device and a two-layer switching module. Background technique [0002] At present, routers are developing in the direction of multi-service integration of routing and switching. Different from ordinary Layer 2 switches, the packets exchanged between the Layer 2 switching module on the router and the Central Processing Unit (CPU, Central Processing Unit) include a large number of Layer 3 data packets in addition to small traffic protocol packets. . Improving the forwarding performance of Layer 3 data packets of the Layer 2 switching module is an important problem that routers need to solve. [0003] Figure 1 shows a schematic diagram of the data interaction between the existing switch chip and the CPU. All messages that need to be uplinked to the CPU, such as: protocol messages and layer-3 data messages, are sent to t...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L12/04H04L12/773
Inventor 邓世友王维兴林尤吉王永钊
Owner XINHUASAN INFORMATION TECH CO LTD
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