Message forwarding method and switch

Abstract

The present application provides a message forwarding method and a switch. The method includes: the first switch generates a first downlink message; the first downlink message includes a Y+1 layer Ethernet header, and the inner layer Ethernet header in the Y+1 layer Ethernet header of the first downlink message includes The first destination MAC address, the first source MAC address and the first Ethernet type, the first destination MAC address is the MAC address of the first terminal device, and each layer of the Y+1 layer Ethernet header of the first downlink message The layer Ethernet header includes the second destination MAC address, the first source MAC address, and the first Ethernet type, and the second destination MAC address in each outer layer Ethernet header corresponds to the MAC addresses of Y first-type switches in turn, and each outer layer The port number of the corresponding switch of the first type is included after the Ethernet header, and Y is an integer greater than or equal to 1; the first switch forwards the first downlink message. A hybrid network of new devices and traditional switches can be realized.

Description

technical field

[0001] The application relates to the communication field, in particular to a message forwarding method and a switch. Background technique

[0002] Carriers or enterprises generally do not want to be bound by a single vendor when deploying networks. In addition, in scenarios where switches are gradually upgraded or old ones are simply reused, mixed deployment of new devices and traditional switches will occur. Therefore, it is particularly important for new devices to support mixed deployment with traditional switches.

[0003] In the simplified enterprise network architecture, there are no traditional switches, but only simplified devices. The core switch is the control center of the entire network, which carries centralized routing and forwards the traffic of the entire network. The minimalist device can be used as an access switch or an aggregation switch, and only performs direct forwarding without a media access control (media access control, MAC) ent...

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