D-Link DMS-1100 User Manual - Page 67

Bridge Hello Time 0-2, Bridge Max Age 6-40

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D-Link DMS-1100 Series User Manual Figure 4.77 - L2 Features > STP > STP Global Settings The fields that can be configured for STP Global Settings are described below: Item Description STP State STP State Select to enable or disable the Spanning Tree Protocol. STP Traps STP New Root Trap Select to enable or disable the STP new root trap option. STP Topology Change Trap Select to enable or disable the STP topology change trap option. STP Mode STP Mode Select the STP mode. The options to choose from are MSTP, RSTP and STP. STP Priority Priority (0-61440) This value is between 0 and 61440. By default, this value is 32768. The lower the value, the higher the priority. STP Configuration Bridge Max Age (6-40) Enter the bridge's maximum age value here. This value must be between 6 and 40 seconds. By default, this value is 20 seconds. The maximum age value may be set to ensure that old information does not endlessly circulate throughout the network. Set by the root bridge, this value ensures that the Switch has spanning tree configuration consistent with other devices on the LAN. Bridge Forward Time (4-30) Enter the bridge's forwarding time value. This value must be between 4 and 30 seconds. By default, this value is 15 seconds. Any port on the Switch spends this time in the listening state while moving from the blocking state to the forwarding state. Max Hops (1-40) Enter the maximum number of hops that are allowed. This value must be between 1 and 40 hops. By default, this value is 20 hops. This value is used to set the number of hops between devices in a spanning tree region before the BPDU packet sent by the Switch will is discarded. Each switch on the hop count will reduce the hop count by one until the value reaches zero. The Switch will then discard the BDPU packet and the information held for the port will age out. Bridge Hello Time (0-2) After selecting RSTP/STP as the STP Mode, this parameter will be available. Enter the bridge's hello time value here. This value must be between 1 and 2 seconds. By default, this value is 2 seconds. This is the interval between two transmissions of BPDU packets sent by the Root Bridge to all switches. This field will only appear when STP or RSTP is selected for the STP Version. For MSTP, the Hello Time must be set on a port by port basis. TX Hop Count (1-10) Enter the transmit hold count value. This value must be between 1 and 10. The default value is 6. This value is used to set the maximum number of Hello packets transmitted per interval. Table 4.47 61

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D-Link DMS-1100 Series User Manual
61
Figure 4.77 – L2 Features > STP > STP Global Settings
The fields that can be configured for
STP Global Settings
are described below:
Item
Description
STP State
STP State
Select to enable or disable the Spanning Tree Protocol.
STP Traps
STP New Root Trap
Select to enable or disable the STP new root trap option.
STP Topology Change Trap
Select to enable or disable the STP topology change trap option.
STP Mode
STP Mode
Select the STP mode. The options to choose from are MSTP, RSTP
and STP.
STP Priority
Priority (0-61440)
This value is between 0 and 61440. By default, this value is 32768.
The lower the value, the higher the priority.
STP Configuration
Bridge Max Age (6-40)
Enter the bridge’s maximum age value here. This value must be
between 6 and 40 seconds. By default, this value is 20 seconds. The
maximum age value may be set to ensure that old information does not
endlessly circulate throughout the network. Set by the root bridge, this
value ensures that the Switch has spanning tree configuration
consistent with other devices on the LAN.
Bridge Forward Time (4-30)
Enter
the bridge’s forwarding time value. This value must be between 4
and 30 seconds. By default, this value is 15 seconds. Any port on the
Switch spends this time in the listening state while moving from the
blocking state to the forwarding state.
Max Hops (1-40)
Enter
the maximum number of hops that are allowed. This value must
be between 1 and 40 hops. By default, this value is 20 hops. This
value is used to set the number of hops between devices in a spanning
tree region before the BPDU packet sent by the Switch will is
discarded. Each switch on the hop count will reduce the hop count by
one until the value reaches zero. The Switch will then discard the
BDPU packet and the information held for the port will age out.
Bridge Hello Time (0-2)
After selecting
RSTP
/
STP
as the
STP Mode
, this parameter will be
available. Enter the bridge’s hello time value here. This value must be
between 1 and 2 seconds. By default, this value is 2 seconds. This is
the interval between two transmissions of BPDU packets sent by the
Root Bridge to all switches. This field will only appear when STP or
RSTP is selected for the STP Version. For MSTP, the Hello Time must
be set on a port by port basis.
TX Hop Count (1-10)
Enter the transmit hold count value. This value must be between 1 and
10. The default value is 6. This value is used to set the maximum
number of Hello packets transmitted per interval.
Table 4.47