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Method and system for implementing virtual gateway and virtual subnet

A gateway and subnet technology, applied in the field of virtual gateways, virtual subnet implementation methods and systems, can solve the problems of virtual MAC address waste, low management efficiency, etc., and achieve the effect of saving address resources

Inactive Publication Date: 2008-04-02
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Only one large virtual MAC address domain can be configured in a management domain. When the management domain is large, management efficiency is low and virtual MAC addresses will be wasted.

Method used

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  • Method and system for implementing virtual gateway and virtual subnet
  • Method and system for implementing virtual gateway and virtual subnet
  • Method and system for implementing virtual gateway and virtual subnet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0097] Embodiment 1: a basic message forwarding scheme.

[0098] As shown in Figure 6, there are two virtual MAC subnets, the virtual MAC address domain of virtual MAC subnet 1 is 00E0-10XX-XXXX / 24, and the virtual MAC address domain of virtual MAC subnet 2 is 00E0-20XX-XXXX / 24. Nodes A and B are edge nodes, nodes D and E are convergence nodes, and node C is a virtual MAC gateway between virtual MAC subnet 1 and virtual MAC subnet 2. The virtual MAC address fields of the virtual MAC subnet 1 and the virtual MAC subnet 2 are respectively configured on the virtual MAC subnet 1 side and the virtual MAC subnet 2 side on the node C. The virtual address forwarding table shown in Table 5 also needs to be configured on gateway node C:

[0099]

virtual MAC address

Output port (for the convenience of description, the output port is used here

connected nodes)

00E0-10XX-XXXX / 24

D

00E0-20XX-XXXX / 24

E

[0100] table 5

[0101] For ...

Embodiment 2

[0113] Embodiment 2: A message forwarding scheme when multiple nodes are connected to the same gateway.

[0114] In a virtual MAC subnet, there may be multiple nodes connected to the same gateway. As shown in Figure 8, nodes A, B, and E are non-converging nodes, nodes D, F, G, and H are converging nodes, and node C is a gateway of two virtual MAC subnets. There are multiple nodes connected to gateway node C in each virtual MAC subnet. When data is sent from the first virtual MAC subnet to the gateway, the configuration of the forwarding entries of the nodes in the virtual MAC subnet is the same as that in the basic embodiment described above. When data is forwarded from the gateway to the second virtual MAC subnet, there are two ways:

[0115] Mode 1: The gateway forwards the data to all nodes directly connected to it in the destination virtual MAC subnet. In this case, the gateway node can configure only one forwarding entry for a virtual MAC subnet, which saves gateway en...

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Abstract

The invention relates to computer and communication network technical field. The invention discloses a virtual media access control composed of a forwarding control unit for receiving message from an interface unit and searching a physical port corresponding with a forwarding list item in an allocation unit of forwarding list item based on the destination address in the said message, and sending the message to the interface unit; an interface unit for receiving the message from the virtual MAC subnet internal nodes connected with each other and sending the message to the forwarding control unit or receiving the message from the forwarding control unit and sending the said message to the corresponding physical port; an allocation unit of forwarding list item for storing the forwarding list item to the forwarding control unit to use. The invention also discloses an implement method and system of implementing the virtual MAC subnet. The invention can perform transmitting cross management field on Ethernet switching path (ESP), and implements the high lever concourse to the forwarding list item and saves virtual MAC address resource.

Description

technical field [0001] The invention relates to the technical field of computers and communication networks, in particular to a method and system for realizing a virtual gateway and a virtual subnet. Background technique [0002] The structure of a provider backbone bridge network (Provider BackboneBridges Network, PBN) defined by the standard 802.1ah formulated by the Institute of Electrical and Electronic Engineers (Institute of Electrical and Electronic Engineers, IEEE) is shown in FIG. 1 . In the PBN, packets of a provider bridge (Provider Bridge, PB) can be completely encapsulated in packets of a provider backbone bridge (Provider Backbone Bridge, PBB). Therefore, PBN can provide a hierarchical network and provide a basis for Ethernet connection or tunneling technology. The encapsulation structure of 802.1ah packets is shown in Table 1: [0003] B-DA B-SA B-Tag I-Tag S-Tag C-DA C-SA C-DATA [0004] Table 1 [0005] Includi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L12/46
CPCH04L45/12H04L12/4641H04L45/28H04L45/22H04L45/247
Inventor 李宏宇郑若滨
Owner HUAWEI TECH CO LTD
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