Supplier network for enlarging dummy local network and method for enlarging the local network space

Abstract

The invention provides a method for expanding a provider network of a virtual local area network and the space of the local area network, and particularly relates to a method for expanding the space of a virtual local area network. This method includes the following steps. first reducing the number of bits occupied by a tag communication protocol identification code to vacate a plurality of remaining bits; secondly, using the remaining bits vacated by the tag communication protocol identification code to represent a first partial bit of a service virtual local area network identification code; and then using The original VLAN ID of the tag control information represents a second part of the service VLAN ID, and the first part and the second part are combined to obtain the complete service VLAN ID. In the method for expanding the provider network of the virtual local area network and the space of the virtual local area network provided by the present invention, the overall number of bits of the service virtual local area network identification code of the package is increased, so as to achieve the effect of expanding the service virtual local area network space of the provider network.

Description

technical field [0001] The present invention relates to a network technology, in particular to a provider network for expanding virtual local area network space and a method for expanding virtual local area network space. Background technique [0002] Different from general physical network, virtual local area network (virtual local area network, VLAN) is a logically independent network. The IEEE 802.1Q standard provides a communication protocol for attaching a virtual local area network tag (VLAN tag) to a packet. The virtual local area network tag is used to indicate information about the virtual local area network to which the packet belongs, so that the virtual local area network can be used in the physical environment be achieved. Generally speaking, the VLAN tag is used to mark the logical group or VLAN to which the packet belongs in the physical network. Therefore, when the packet is forwarded in the physical network, it can be processed differently according to the ...

AI Technical Summary

Problems solved by technology

However, under the current IEEE 802.1Q standard, since the VLAN ID 130 of the VLAN tag 106 only includes 12 bits, an ISP can only use a number of 4096 (ie 2 12 ) service VLAN space

When the number of clients using the provider network is much greater than 4096, it is difficult for the provider network to process packets according to the service VLAN label, resulting in inefficiency in the operation of the provider network

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