3Com SuperStack 4, Configuration Manual

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RSTP Configuration 253
Table 279 Set the Priority of a Specified Port
By setting the priority of an Ethernet port, you can put a specified Ethernet port
into the final spanning tree. Generally, the lower the value is set, the higher
priority the port has and the more likely it is for this Ethernet port to be included in
the spanning tree. If all the Ethernet ports of the bridge adopt the same priority
parameter value, then the priority of these ports depends on the Ethernet port
index number. Note that changing the priority of Ethernet port will cause
recalculation of the spanning tree. You can set the port priority at the time when
setting up the networking requirements.
By default, priorities of all the Ethernet ports are 128.
Configure a Specified
Port to be Connected to
Point-to-Point Link
Generally, a point-to-point link connects the Switches.
You can use the following command to configure a specified port to be connected
to a point-to-point link.
Perform the following configurations in the Ethernet Port View.
Table 280 Configure a Specified Port to be Connected to a Point-to-Point Link
The two ports connected via the Point-to-Point link can enter the forwarding state
rapidly by transmitting synchronous packets, so that the unnecessary forwarding
delay can be reduced. If this parameter is configured to be
auto
mode, RSTP can
automatically detect if the current Ethernet port is connected to a Point-to-Point
link. Note that, for an aggregated port, only the master port can be configured to
connect with the point-to-point link. After auto-negotiation, the port working in
full duplex can also be configured to connect with such a link.
You can manually configure the active Ethernet port to connect with the
point-to-point link. However, if the link is not a point-to-point link, the command
may cause a system problem, and therefore it is recommended to set it as
auto
mode.
By default, this parameter is configured to
auto
, namely in auto mode.
Set mCheck of the
Specified Port
RSTP is STP-compatible, so on a Switching network it does not matter if some
Switches are running STP and other Switches are running RSTP. In a relatively
stable network though the bridge running STP has been removed, the port of the
Operation Command
Set the priority of a specified port
stp port priority port_priority
Restore the default priority of the specified port
undo stp port priority
Operation Command
Configure a specified port to be connected to a
point-to-point link
stp point-to-point
force-true
Configure a specified port not to be connected to a
point-to-point link
stp point-to-point
force-false
Configure RSTP to automatically detect if the port is
connected to a point-to-point link.
stp point-to-point auto
Configure the port to be automatically detected if it is
connected to a point-to-point link, as defaulted
undo stp point-to-point