Multicast system, device and method based on 802.1ah protocol in MAN Ethernet network

A technology of Ethernet and metropolitan area, applied in the field of communication, can solve problems such as the inability to meet the conditions of metropolitan Ethernet to support multicast services, and achieve the effect of ensuring fast recovery and improving high reliability

Inactive Publication Date: 2008-02-20
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

After all devices are equipped with dual uplinks, although the single point of failure is eliminated, problems such as how to detect device failures and how to perform fast topology switching to ensure that th

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  • Multicast system, device and method based on 802.1ah protocol in MAN Ethernet network
  • Multicast system, device and method based on 802.1ah protocol in MAN Ethernet network
  • Multicast system, device and method based on 802.1ah protocol in MAN Ethernet network

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Embodiment Construction

[0041] Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the present invention is described in further detail:

[0042] In Embodiment 1 of the present invention, a multicast system based on the 802.1ah protocol in a metropolitan Ethernet is shown in Figure 3, including: Designated Router (DR, Designated Router) 10, Backup Designated Router (BDR, Backup Designated Router) ) 20 and at least one switch (Switch) 30. It should be noted that the DR and the BDR are the same routers, and they only perform corresponding functions according to whether they are designated routers or backup designated routers in the network. In case of a network failure, the backup designated router BDR may be transformed into a designated router DR, and the designated router DR may also be transformed into a backup designated router BDR, and the functions performed by the two are changed accordingly.

[0043] Specifically, the designated router 10 is configured to...

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Abstract

The utility model discloses a router which is used for the multi cast message transmission in the local Ethernet based on the 802.1 ah protocol, wherein, the local Ethernet comprises at least two routers and an exchanger. Under the situation of normal network link, one of the routers, as an assigned router, is used to process and forward the multi cast current transmit by the core network to the exchanger; the other router, as an end-to-end assigned and back-up router, is used to detect the network link; when the fault of the network link is detected by the back-up router, the assigned router is used to process and forward the multi cast current transmit by the core network to the exchanger. The utility model also discloses the router application and 802.1 ah protocol-based implementation system and the method of multi cast in the local Ethernet. The utility model has the advantages of initiating the multi cast business practically, making sure the fast restoring of multi cast business and improving the reliability of network transmission.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a multicast system, equipment and method based on 802.1ah protocol in metropolitan Ethernet. Background technique [0002] The PBT (Provider Backbone Transport) technology based on 802.1ah (MAC-in-MAC, double-layer MAC encapsulation) is one of the metro Ethernet transport technologies that have attracted much attention recently. A complete solution, but for multicast services, such as BTV (Broadcast Television, broadcast television) services, it is rarely involved. [0003] In the prior art, although a B-DA (Backbone Destination MAC, backbone destination MAC) can use a multicast MAC address to support a point-to-multipoint multicast service. However, to support multicast services in metro Ethernet, at least the following three points must be met: (1) basic service capabilities, supporting basic point-to-multipoint message forwarding; (2) high reliability, must supp...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L12/18H04L29/06H04L12/28H04L45/16
Inventor 张雄张俭锋
Owner NEW H3C TECH CO LTD
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