Cabletron Systems BRIM-F6 manual Ring Map Configuration Screen Fields

The Ring Map Configuration Screen

3.7.1Ring Map Configuration Screen Fields

The Ring Map Configuration screen displays the addresses and sequence of each FDDI device attached to the ring. When first displayed, the station at the upper left corner of the ring is this station (HSIM-F6). The Ring Map Configuration screen displays node class, node address, and twisted and/or wrapped conditions (T for twisted and/or W for wrapped) in parentheses. The following list provides the node class possibilities:

NAS - (Null Attached Station) Isolated station; station not connected to an FDDI Ring.

DAS - (Dual Attached Station) Station does not support M (Master) ports, but does connect directly to an FDDI primary and secondary ring using A and B ports.

DAC - (Dual Attached Concentrator) Station that supports M (Master) ports and provides access for multiple stations. A DAC connects directly to an FDDI ring using A and B ports.

SAS - (Single Attached Station) Station that accesses the primary ring only, via a concentrator.

SAC - (Single Attached Concentrator) Station that accesses the primary ring only and provides access for multiple Single Attached Stations (SAS). Single Attached Concentrators provide the same services as DACs, but without the redundancy of the dual ring topology.

NOTES

While Local Management updates the ring map, for example, during a ring topology change, the screen displays ??-??-??-??-??-?? to illustrate an undetermined address. You cannot use the scroll commands until Local Management finishes rebuilding the map.

The Ring Map display stops at the first occurrence of an undetermined address, and does not display any known information beyond this point.

HSIM-F6 User’s Guide 3-17