Spanning Tree Protocol - D-Link DES-3326 User Manual

Spanning Tree Protocol

The IEEE 802.1D Spanning Tree Protocol allows for the blocking
of links between switches that form loops within the network.
When multiple links between switches are detected, a primary
link is established. Duplicated links are blocked from use and
become standby links. The protocol allows for the duplicate links
to be used in the event of a failure of the primary link. Once the
Spanning Tree Protocol is configured and enabled, primary links
are established and duplicated links are blocked automatically.
The reactivation of the blocked links (at the time of a primary
link failure) is also accomplished automatically – without
operator intervention.
This automatic network reconfiguration provides maximum
uptime to network users. However, the concepts of the Spanning
Tree Algorithm and protocol are a complicated and complex
subject and must be fully researched and understood. It is
possible to cause serious degradation of the performance of the
network if the Spanning Tree is incorrectly configured. Please
read the following before making any changes from the default
values.
Note: The DES-3326 STP allows two levels of spanning
trees to be configured.
spanning tree on the links between switches.
referred to as the Switch or Global level. The second
level is on a port group basis.
configured as being members of a spanning tree and the
algorithm and protocol are applied to the group of ports.
This is referred to as the Port or VLAN level.
The DES-3326 switch STP performs the following functions:
Switch Management and Operating Concepts
24-port NWay Ethernet Switch User's Guide
The first level constructs a
Groups of ports are
This is
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