Table 4-32 (Continued). STP Status screen options.
Parameter Description
Current Forward Delay
Show the current root bridge forward delay time. The value of
Forward Delay time is set by root. The Forward Delay time is
defined as the time spent from Listening state moved to Learning
state or from Learning state moved to Forwarding state of a port in
bridge.
Hello Time
Show the current hello time of the root bridge. Hello time is a time
interval specified by root bridge, used to request all other bridges
periodically sending hello message every “hello time” seconds to
the bridge attached to its designated port.
STP Topology Change Count
STP Topology Change Count expresses the time spent in unit of
seconds since the beginning of the Spanning Tree Topology
Change to the end of the STP convergence. Once the STP change
is converged, the Topology Change count will be reset to 0. The
figures showing in the screen may not 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.
4.11.2 STP C
ONFIGURATION
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.
Table 4-33. STP Configuration screen options.
Parameter Description
STP Configuration
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.
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.
24-Port 10/100BASE-TX L2 Managed PoE Switch with 2 SFP Dual Media Ports
66
