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Terminiology question in STP (Spanning tree protocol)

johnifanx98

Spanning Tree Protocol - Wikipedia, the free encyclopedia

The collection of bridges in a local area network (LAN) can be depicted as a graph whose nodes are bridges and LAN segments (or cables), and whose edges are the interfaces connecting the bridges to the segments.

I thought network segment means a collection of devices connected to a certain switch. If this is the case, how could a network segment can be connected to two more than one switches as the diagram shows....

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Comments

sizeon

I thought that anything in the same subnetwork is considered a network segment. Thus anything with the same network address is in the same network segment.

networker050184

Usually when discussing STP a newtwork segment is a single link (or multiple in a LAG) between two switches.

johnifanx98

sizeon wrote: »

I thought that anything in the same subnetwork is considered a network segment. Thus anything with the same network address is in the same network segment.

As shown in the diagram, it looks like the LAN segments are not the whole layer2 subnet, but something smaller than that.

johnifanx98

networker050184 wrote: »

Usually when discussing STP a newtwork segment is a single link (or multiple in a LAG) between two switches.

This makes sense. Thanks a lot...