Bridge Port Stpcost - 3Com 4007 Command Reference Manual

140 C 7: B
HAPTER RIDGE

bridge port stpCost

Layer 2
Switching
Modules
Multilayer
Switching
Modules
P P
ORT ARAMETERS
Sets the path cost that the Spanning Tree Protocol (STP) adds to the root
cost field in a configuration message that the port receives. The module
uses this value to determine the path cost to the root through the port.
The current value is shown in the pathCost field of the
display.
detail
Valid Minimum Abbreviation
b po stpc
Important Considerations
You can use this command to configure the same setting on multiple
ports simultaneously. When you specify multiple port numbers, the
module prompts you to choose the setting and then applies it to all of
the ports.
A larger path cost value makes the LAN that is reached through the
port more likely to be low in the Spanning Tree topology. The lower
the LAN is in the topology, the less through traffic it carries. For this
reason, you may want to assign a large path cost to a LAN that has a
lower bandwidth or to one on which you want to minimize traffic.
If your configuration is successful, the previous menu appears. If the
configuration is not successful, the module notifies you that your
changes failed, and you can try to reenter your changes.
See the IEEE 802.1D MAC Bridges standard for recommended path
cost settings.
Options
Prompt Description
Bridge ports Bridge ports for which you
want to set the path cost
STP cost Configurable bridge port STP
parameter that specifies the
cost to add to the total path
cost when this port is the root
port
bridge port
Possible Values [Default]
One or more valid –
bridge port
numbers
1 – 65535 100
(Ethernet)
10 (Fast
Ethernet)
1 (Gigabit
Ethernet)