DXS-3326GSR Gigabit Layer 3 Switch
Figure 6- 18. STP Bridge Global Settings window
The following parameters can be set:
Parameter Description
STP Status
Use the pull-down menu to enable or disable STP globally on the Switch. The
default is
Disabled
.
STP Version
Use the pull-down menu to choose the desired version of STP to be implemented
on the Switch. There are three choices:
STP
- Select this parameter to set the Spanning Tree Protocol (STP) globally on
the switch.
RSTP
- Select this parameter to set the Rapid Spanning Tree Protocol (RSTP)
globally on the Switch.
MSTP
- Select this parameter to set the Multiple Spanning Tree Protocol (MSTP)
globally on the Switch.
Hello Time
(1 - 10 Sec)
<2>
The Hello Time can be set from
1
to
10
seconds. In STP, this is the interval
between two transmissions of BPDU packets sent by the Root Bridge to tell all
other switches that it is indeed the Root Bridge. In RSTP, this configuration
message is sent by the Designated Port each Hello Time. This field will only
appear here when STP or RSTP is selected for the STP Version. For MSTP, the
Hello Time must be set on a port per port basis. See the MST Port Settings
section for further details.
Max Age (6 - 40 Sec)
<20>
The Max Age may be set to ensure that old information does not endlessly
circulate through redundant paths in the network, preventing the effective
propagation of the new information. Set by the Root Bridge, this value will aid in
determining that the Switch has spanning tree configuration values consistent with
other devices on the bridged LAN. If the value ages out and a BPDU has still not
been received from the Root Bridge, the Switch will start sending its own BPDU to
all other switches for permission to become the Root Bridge. If it turns out that
your switch has the lowest Bridge Identifier, it will become the Root Bridge. The
user may choose a time between
6
and
40
seconds. The default value is
20
.
Forward Delay (4 - 30
Sec)
<15 >
The Forward Delay
can be from
4
to
30
seconds. Any port on the Switch spends
this time in the listening state while moving from the blocking state to the for-
warding state.
55
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