Detecting and protecting method of double-layer loop in VRRP topological network
A topology network and loop technology, applied in the field of switching, can solve problems related to VLAN, achieve the effect of solving loop problems and realizing loop detection and protection
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[0033] For ease of understanding, a brief introduction to Layer 2 switching devices and Layer 3 switching devices is given first.
[0034] Simply put, according to the 7-layer reference model of network OSI, the data link layer is the second layer, and the network layer is the third layer. If the switching device performs data packet switching (transferring data packets from one port to another port) based on data link layer information, then it is a layer 2 switching device, and if it is based on network layer information, then it is a layer 3 switching device .
[0035]Therefore, the three-layer exchange is proposed relative to the traditional exchange concept. The three-layer switching technology realizes the high-speed forwarding of data packets in the third layer of the network model. Simply put, the three-layer switching technology is: two-layer switching technology + three-layer forwarding technology. The function of network routing can be realized by applying the th...
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