Setting The Port Path Cost - 3Com SUPERSTACK 2200 User Manual

Setting the Port
Path Cost
Path cost value
Top-Level Menu
system
display
ethernet
summary
ipFragmentation
fddi
detail
ipxSnapTranslation
bridge
multicastLimit
addressThreshold
ip stpState
agingTime
snmp
stpCost
stpState
analyzer
stpPriority
stpPriority
script
address
stpMaxAge
logout
stpHelloTime
stpForwardDelay
stpGroupAddress
port
packetFilter
The following example shows values being set for more than one port:
Ethernet port 4 - Enter new value (disabled,enabled)
disabled
[enabled]:
Ethernet port 5 - Enter new value (disabled,enabled)
disabled
[enabled]:
You can set the path cost for a bridge port. The path cost is the cost to be
added to the root cost field in a configuration message received on this
port. This value is used to determine the path cost to the root through this
port. You can set this value individually on each port.
A larger path cost value makes the LAN 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 will carry. For this reason, you might
want to assign a large path cost to a LAN with a lower bandwidth or one on
which you want to minimize traffic.
To configure the path cost:
1 From the top level of the Administration Console, enter:
bridge port stpCost
You are prompted for the port type.
2 Enter ,
Ethernet FDDI
You are prompted for the port number(s).
3 Enter the number(s) of the port(s) or
on each bridge.
You are prompted for the path cost for each port you specified.
4 Enter the path cost for the port(s).
The following example shows values being set for more than one port:
FDDI port 1 - Enter new value [100]:
Ethernet port 3 - Enter new value [100]:
Ethernet port 4 - Enter new value [100]:
If your configuration was successful, you return to the previous menu. If the
configuration was not successful, you are notified that your changes failed,
and you can try to re-enter those changes.
Administering STP Bridge Port Parameters
, or .
all
to configure path cost for all ports
all
50
200
200
11-9