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Tag: BPDU guard

Spanning-tree root guard, BPDU guard and loop guard

January 25, 2011 Rob Rademakers 11 comments

This is another (short) post about three more important features of spanning-tree, as discussed on my previous blog.
Spanning-tree root guard is useful in avoiding layer 2 loops during network anomalies. Root guard forces an interface to become a designated port to prevent switches from becoming a root switch.
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  • Spanning-tree
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