D-Link DMS-1100-10TP, Руководство пользователя

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D-Link DMS-1100 Series User Manual
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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
Click Apply to make the configurations take effect.
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.