Method for forwarding two-layer broadcasting packets and untagged packets of ONU (optical network unit)
A broadcast packet and packet forwarding technology, applied in multiplexing system selection device, data exchange through path configuration, digital transmission system, etc., can solve problems such as inability to implement VLAN, and achieve the effect of reducing workload
Active Publication Date: 2013-04-03
FENGHUO COMM SCI & TECH CO LTD
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Problems solved by technology
[0006] The technical problem to be solved by the present invention is to solve how to utilize the soft bridge of linux to realize that ONU transmits broadcast packet and unknown packet and can't realize the isolation of VLAN to broadcast packet and unknown packet when forwarding by linux soft bridge, thereby make broadcast packet or unknown packet Problem with forwarding to all ports except the receiving port
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[0035] The present invention will be described in detail below in conjunction with the accompanying drawings. The basic frame of ONU among the present invention is as figure 1 As shown, 29 network cards can be configured in the ONU, including eth0~eth4, wifi_fp0~wifi_fp15, wan, tel0, voip0, tr0, wan0~wan3. According to their locations, the network cards are divided into LAN-side network cards and WAN-side network cards. The LAN-side network cards include 21 network cards, eth0~eth4, wifi_fp0~wifi_fp15, and the WAN-side network cards include wan, tel0, voip0, tr0, wan0~wan3. These 8 network cards.
[0036] The LAN device and the wan in the WAN device belong to the bridge port of the soft bridge br0, and each bridge port of the soft bridge br0 corresponds to each bridge port of the hard bridge. wan corresponds to the wan_bridged port of the hard bridge, tel0 is used for ONU and OLT telnet communication service, voip0 is used for voice service, wan0~wan3 are used for Router WAN...
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The invention discloses a method for forwarding two-layer broadcasting packets and untagged packets of an ONU (optical network unit). The method includes the steps of A10, hanging a LAN (local area network) side network card of the ONU and a wan (wide area network) network card in a WAN side network card below a LINUX soft bridge of a PON (passive optical network) chip; A20, adding forwarding rules of uplink and downlink broadcasting packets and untagged packets into hook functions in a soft bridge of a PON chip core to realizing forwarding of the uplink and downlink broadcasting packets and the untagged packets according to VLAN (virtual local area network) information; if downlink receiving port is network card wan, forwarding to other ports sequentially; and if uplink receiving port is optional LAN equipment, forwarding to other ports sequentially; wherein the bridge ports of the LINUX soft bridge is in one-to-one correspondence to ports of a hard bridge, and forwarding rules of the uplink broadcasting packets and the untagged packets accords to forwarding rules of vlan domain. The method is highly efficient, the LINUX soft bridge is used to realize forwarding and isolation of broadcasting packets and untagged packets according to VLAN services of ports under the condition that the ONU is lack of a switch chip, and work load of the network card is reduced.
Description
technical field [0001] The invention relates to an ONU forwarding technology, in particular to a method for the ONU to realize the forwarding of two-layer broadcast packets and unknown packets. Background technique [0002] GPON (Gigabit-Capable PON) technology is the latest generation of broadband passive optical integrated access technology based on the ITU-T G.984.x standard. It has many advantages such as high bandwidth, high efficiency, large coverage, and rich user interfaces. Most operators regard it as an ideal technology to achieve broadband and comprehensive transformation of access network services. GPON system includes: Optical Line Terminal (OLT), Optical Network Unit (ONU) and Optical Distribution Network (ODN). OLT is usually placed in the central computer room, while ONU is usually placed on the user side. ONU is divided into fiber-to-the-home (FTTH) type and fiber-to-the-building (FTTB) type. [0003] The ONU realizes the forwarding of Layer 2 data through...
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Login to View More IPC IPC(8): H04L12/701H04L12/46H04Q11/00
Inventor 吴军平孟星
Owner FENGHUO COMM SCI & TECH CO LTD