Draytek P2260 Switch User Manual


 
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