A method and device for issuing a mac address

Abstract

The present invention discloses a method and device for publishing a MAC address, which are applied to an EVI network. The method includes: ED determines the first fragment corresponding to the MAC address from a local fragment set according to the currently learned MAC address, wherein , for the same MAC address, the fragments corresponding to the MAC address determined by the ED each time are the same; the ED stores the MAC address in the first fragment; the ED issues the first fragment to Distal ED. Compared with the method of storing MAC addresses according to the order of the slice numbers in the prior art, the ED device can store the same MAC address in the same slice each time. In this way, after the ED device sends the fragments to the remote ED, for the remote ED, the fragment of the same MAC address in the received fragment set is the same as the fragment of the MAC address in the saved fragment set. The fragmentation is the same, thus avoiding the remote ED to delete and then add the same MAC address, avoiding the loss of traffic.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a method and device for issuing a MAC address. Background technique [0002] EVI (Ethernet Virtual Interconnection, Ethernet connection virtualization) is an advanced "MAC (Media Access Control, media access control layer) in IP" technology, used to implement L2VPN (Layer2Virtual Private Network, Layer 2) based on IP core network virtual private network) technology. EVI only maintains routing and forwarding information on the site's ED (Edge Device, edge device), without changing the site's internal and core networks. The overall EVI network consists of a core network, a site network, and an overlapping network. A site network is a Layer 2 network with independent business functions that is connected to the core network through one or more EDs. It is usually managed and controlled by a single organization and mainly consists of hosts and switching devices. EDs provide Lay...

AI Technical Summary

Problems solved by technology

It can be seen that when MAC is transmitted in different fragments, it will cause traffic loss

[0011] In addition, for a system with an active / standby environment, if the active board and the standby board learn MAC addresses through distributed MAC address learning, the order in which the standby board and the active board learn MAC addresses may be different, resulting in The slice information on the board and the standby board are inconsistent

After the active / standby switchover occurs, the standby board will be upgraded to the active board, and will send its own MAC fragmentation information to the remote ED devices. According to the above-mentioned way that the ED of the remote site network updates the MAC address according to the fragmentation, the remote When the end ED finds that the MAC address in the fragment is inconsistent with the MAC address in the locally stored fragment, it will also perform the operation of deleting first and then adding, resulting in traffic loss

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