VigorSwitch G2080 User’s Guide
79
be the exact time it spent but very close to, because the time
is eclipsing.
Time Since Last Topology Change: Time Since Last Topology Change is the accumulated
time in unit of seconds the STP has been since the last STP
Topology Change was made. When Topology Change is
initiated again, this counter will be reset to 0. And it will
also count again once STP topology Change is completed.
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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 parameters 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 GEL2-SW8 as 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 GEL2-SW8 is the root
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