Method and device for mac address synchronization in trill network

Abstract

The present application discloses a method and device for synchronizing MAC addresses in a TRILL network, wherein the method includes: the first core layer RB sends a message carrying a default MAC address to the access layer RB of the AVF in the data center as the same VLAN. L1ESADI protocol message, so that the access layer RB that receives the L1ESADI protocol message adds a corresponding MAC entry in the MAC address table, and the outgoing interface of the MAC entry is the NickName of the first core layer RB; the first core Layer RBs send L2ESADI protocol packets to the second core layer RBs in other data centers. The L2ESADI protocol packets carry the MAC address in the VLAN in the data center learned by the first core layer RBs, so that the second core layer The RB adds a MAC entry in the MAC address table.

Description

technical field [0001] The present application relates to the technical field of network communication, in particular to a method and device for synchronizing MAC addresses in a TRILL network. Background technique [0002] TRILL (TRansparent Interconnection of Lots of Links) protocol introduces the design idea of ​​the three-layer routing technology IS-IS (Intermediate System-to-Intermediate System, intermediate system to intermediate system) The simplicity and flexibility of the first layer and the stability, scalability and high performance of the third layer are organically integrated, which is very suitable for the data center to build a large-scale two-layer network. The following briefly introduces some basic concepts in the TRILL protocol. [0003] RB (Routing Bridge, routing bridge): The Bridge device running the TRILL protocol is called RB, also written as RBridge. [0004] TRILL network: A Layer 2 network composed of RBs is called a TRILL network, such as figure...

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Problems solved by technology

[0017] However, the space capacity of MAC table entries on RBs is limited, and the space capacity of MAC table entries of RBs deployed in different locations is also different. Among them, the space capacity of MAC table entries of The MAC table entry space capacity of RB is small, and terminal devices are generally connected to RBs at the access layer. This requires that RBs at the access layer not only need to learn the MAC addresses of terminal devices in the local network, but also learn the MAC addresses of the same data center. All the MAC addresses synchronized from other RBs of the AVF in the same VLAN and in other data centers, such a huge number of MAC entries are unbearable for the access layer RBs

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