3Com 3C780 User Guide - Page 81
wrap configuration.
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Page 81 highlights
Configuring the Hub 3-13 The concept of neighbor is shown in Figure 3-6. Upstream neighbor from B Downstream neighbor from B A B C Direction of data flow: A to B to C Figure 3-6. Upstream and Downstream Neighbors To display the addresses of the hub's upstream and downstream neighbors, enter the show neigh command. A single attachment to the ring occurs when you use the S/M attachment port configuration. Because the S port restricts the hub to single attachment, the S port is never attached directly to the primary trunk ring and cannot participate in wrap configuration. The M/M attachment port configuration restricts the hub to a null attachment type. Tables 3-3 and 3-4 define and summarize the port connection rules supported by the FDDI specification.
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