PLANET WGSW-5242 - Manual (Page 74)

User’s Manual of WGSW-5242
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ensure that the link between switch B and switch C is the blocked link.
This section is to control the spanning tree of the switch, the spanning tree function contains links to the following topics:
- RSTP
- RSTP Port
- MSTP
- MSTP Port
- MSTP Instance
- MSTP Interface
4.5.1 RSTP (Rapid Spanning Tree Protocol)
The Rapid Spanning Tree Protocol (RSTP) provides rapid convergence of the spanning tree by assigning port roles and by
determining the active topology. The RSTP builds upon the IEEE 802.1D STP protocol to select the switch with the highest
switch priority as the root switch.
Figure 4-5-4
RSTP Screenshot
The page includes the following fields:
Object Description
• Enable RSTP Enables RSTP of the switch will allow you to control the RSTP parameters from
the bridge point of view.
• Priority Specifies the bridge priority value. When switches or bridges are running STP,
each is assigned a priority.
The default value is
32768
.
The port priority value is provided in increments of 4096. For example, 4096,
8192, 12288, etc. The range is 0 to 61440.
• Max Age The max age timer controls the maximum length of time that passes before a
bridge port saves its configuration BPDU information.
• Forward Delay Forward delay is a time value, which controls how fast a port changes its state.
The value determines how long the port stays in each of the listening and
learning states which precede the forward state. This value is also used to age all