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This page shows how to modify the STP mode and the global STP/RSTP Bridge
Configuration.
The STP mode includes the
STP
,
RSTP
,
MSTP
and
Disable
. Please select the STP mode
for your system first. The default mode is RSTP enabled.
After select the STP or RSTP mode, continue to configure the global Bridge parameters for
STP and RSTP.
After select the MSTP mode, please go to MSTP Configuration page.
Figure 4.4.1.1 show the web page which allows you to select the STP mode, configure the
global STP/RSTP/MSTP settings.
RSTP
RSTP is the abbreviation of Rapid Spanning Tree Protocol. If a switch has more than one
path to a destination, it will lead to message loops that can generate broadcast storms and
quickly bog down a network. The spanning tree was created to combat the negative effects
of message loops in switched networks. A spanning tree uses a spanning tree algorithm
(STA) to automatically sense whether a switch has more than one way to communicate
with a node. It will then select the best path (primary), and block the other path(s). It will
also keep track of the blocked path(s) in case the primary path fails. Spanning Tree
Protocol (STP) introduced a standard method to accomplish this. It is specified in IEEE
802.1D-1998. Later, Rapid Spanning Tree Protocol (RSTP) was adopted and represents
the evolution of STP, providing much faster spanning tree convergence after a topology
change. This is specified in IEEE 802.1w. In 2004, 802.1w is included into 802.1D-2004
version. This switch supports both RSTP and STP (all switches that support RSTP are also
backward compatible with switches that support only STP).
Bridge Configuration
Priority (0-61440)
: RSTP uses bridge ID to determine the root bridge, the bridge with the
highest bridge ID becomes the root bridge. The bridge ID is composed of bridge priority
and bridge MAC address. So that the bridge with the highest priority becomes the highest
bridge ID. If all the bridge ID has the same priority, the bridge with the lowest MAC address
will then become the root bridge.