Draytek P2260 Manual De Usuario

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VigorSwitch P2260 User’s Guide 
70 
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 
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 GEL2-SW8 is 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