L2 Features > Stp > Stp Port Settings - D-Link DXS-1210-10TS User Manual

D-Link DXS-1210 Series User Manual
Priority (0-61440): Enter the STP priority value. This value is between 0 and 61440. By default, this value is
32768. The lower the value, the higher the priority.
Click the Apply button to save your settings.
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.
Click the Apply button to save your settings.
L2 Features > STP > STP Port Settings
In addition to setting spanning tree parameters for use on the switch level, the Switch allows for the
configuration of STP on a port level Groups of ports can be configured in a port group, each of which can
have its own spanning tree instance and configuration settings.
Port level spanning tree works in the same way as switch level spanning tree, but the root bridge is replaced
with a root port. A root port in the group, which is elected based on port priority and port cost, and is the
connection to the network for the group. Redundant links will be blocked, just as redundant links are blocked
on the switch level.
The STP on the switch level blocks redundant links between switches (and similar network devices). The
port level STP will block redundant links within an STP group.
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