DCFM Professional Plus User Manual (53-1001774-01, June 2010)

DCFM Professional Plus User Manual 361

53-1001774-01

Spanning Tree Protocol policy

The Spanning Tree Protocol (STP) is a Layer 2 protocol that ensures a loop-free topology for any

bridged LAN (Layer-2 bridges are typically Ethernet switches). Spanning tree allows a network

design to include spare (redundant) links to provide automatic backup paths if an active link fails,

without the danger of bridge loops or the need to manually enable or disable these backup links.

NOTE

STP is not supported on internal ports.

Refer to “Spanning Tree Protocol configuration” on page 393 for more information.

802.1x policy

802.1x is a standard authentication protocol that defines a client-server-based access control and

authentication protocol. 802.1x restricts unknown or unauthorized clients from connecting to a

LAN through publicly accessible ports.

Refer to “802.1x authentication” on page 398 for information on setting 802.1x parameters.