Stp Configuration - Lancom ES-2126+ Manual

STP Configuration

4.12.2
The STP, Spanning Tree Protocol, actually includes RSTP. In the Spanning Tree
Configuration, there are six parameters open for the user to configure as
user's idea. Each parameter description is listed below.
Function name: STP Configuration
Function Description: User can set the following Spanning Tree parame-
ters to control STP function enable/disable, select mode RSTP/STP and
affect STP state machine behavior to send BPDU in this switch. The default
setting of Spanning Tree Protocol is "Disable".
Parameter Description:
Spanning Tree Protocol: Set 802.1W Rapid STP function Enable /
Disable. Default is "Disable"
Bridge Priority: The lower the bridge priority is, the higher priority it
has. Usually, the bridge with the highest bridge priority is the root. If
you want to have the PSES-2126Cas root bridge, you can set this
value lower than that of bridge in the LAN. The valid value is 0 ~
61440. The default is 32768.
Hello Time: Hello Time is used to determine the periodic time to send
normal BPDU from designated ports among bridges. It decides how
long a bridge should send this message to other bridge to tell I am
alive. When the PSES-2126Cis the root bridge of the LAN, for
example, all other bridges will use the hello time assigned by this
switch to communicate with each other. The valid value is 1 ~ 10 in
unit of second.
Default is 2 seconds.
Max. Age: When the PSES-2126Cis the root bridge, the whole LAN
will apply this figure set by this switch as their maximum age time.
When a bridge received a BPDU originated from the root bridge and
if the message age conveyed in the BPDU exceeds the Max. Age of the
root bridge, the bridge will treat the root bridge malfunctioned and
issue a Topology Change Notification (TCN) BPDU to all other bridges.
All bridges in the LAN will re-calculate and determine who the root
bridge is. The valid value of Max. Age is 6 ~ 40 seconds. Default is 20
seconds.
Forward Delay: You can set the root bridge forward delay time. This
figure is set by root bridge only. The forward delay time is defined as
the time spent from Listening state moved to Learning state and also
LANCOM ES-2126+ und LANCOM ES-2126P
Chapter 4: Operation of Web- based Management
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