Set The Priority Of A Specified Port; Configure A Specified Port To Be Connected To Point-To-Point Link - 3Com Switch 4500 26-Port Configuration Manual

Set the Priority of a
Specified Port
Configure a Specified
Port to be Connected to
Point-to-Point Link
Operation
Restore the default standard to be used
By default, the Switch calculates the default Path Cost of a port by the IEEE 802.1t
standard.
The port priority is an important basis to decide if the port can be a root port. In
the calculation of the spanning tree, the port with the highest priority will be
selected as the root assuming all other conditions are the same.
You can use the following command to set the priority of a specified port.
Perform the following configurations in the Ethernet Port View.
Table 184 Set the Priority of a Specified Port
Operation

Set the priority of a specified port

Restore the default priority of the 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.
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 185 Configure a Specified Port to be Connected to a Point-to-Point Link
Operation
Configure a specified port to be connected to a
point-to-point link
Configure a specified port not to be connected to a
point-to-point link
Configure RSTP to automatically detect if the port is
connected to a point-to-point link.
Configure the port to be automatically detected if it is
connected to a point-to-point link, as defaulted
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
automatically detect if the current Ethernet port is connected to a Point-to-Point
RSTP Configuration
Command
undo stp pathcost-standard
Command
stp port priority port_priority
undo stp port priority
Command
stp point-to-point
force-true
stp point-to-point
force-false
stp point-to-point auto
undo stp point-to-point
mode, RSTP can
auto
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