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Administering STP Bridge Port Parameters 11-9
The following example shows values being set for more than one port:
Ethernet port 4 - Enter new value (disabled,enabled)
[enabled]:
disabled
Ethernet port 5 - Enter new value (disabled,enabled)
[enabled]:
disabled
Setting the Port
Path Cost
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.
Path cost value 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, or all.
You are prompted for the port number(s).
3 Enter the number(s) of the port(s) or
all to configure path cost for all ports
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]: 50
Ethernet port 3 - Enter new value [100]: 200
Ethernet port 4 - Enter new value [100]: 200
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.
Top-Level Menu
system
ethernet
fddi
➧bridge
ip
snmp
analyzer
script
logout
display
ipFragmentation
ipxSnapTranslation
addressThreshold
agingTime
stpState
stpPriority
stpMaxAge
stpHelloTime
stpForwardDelay
stpGroupAddress
➧port
packetFilter
summary
detail
multicastLimit
stpState
➧stpCost
stpPriority
address