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Chapter 2 Networking
Ring Topology
In a ring topology, the host communicates with all nodes through the most effective path. You
must use an external switch in a ring topology. You must configure the network properly with a
recommended external switch before creating redundant links in the network. Refer to the
External Switch Requirements section for information about what to look for in an external
switch.
Figure 2-2. Ring Topology
Advantages:
• Failure of any single Ethernet cable does not disrupt network communication
• Additional nodes or heavier network traffic affects network performance less than the line
topology
• Simple installation
• Ideal for a local networking solution
Note Network configuration and programming require careful consideration.
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Disadvantages:
• Network traffic patterns can make troubleshooting difficult
• Requires an external switch
Star Topology
In a star topology, the host communicates directly with each node through the external switch.
You must use an external switch in a star topology; for network synchronization, you must use
an external 802.1AS switch. Redundant links are recommended, but optional, in this topology.
You must configure the network properly with a recommended external switch before creating
redundant links in the network. Refer to the External Switch Requirements section for
information about what to look for in an external 802.1AS switch.
NodeNode
Host
Networking
Node
External
Switch
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