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Allied Telesis AT-FS970M Series User Manual

Page 845

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AT-FS970M Switch Command Line User’s Guide

845

An MSTP region can be considered as a virtual bridge. The implication is
that other MSTP regions and STP and RSTP single-instance spanning
trees cannot discern the topology or constitution of an MSTP region. The
only bridge they are aware of is the regional root of the CIST instance.