3Com 3CRUS2475 24, User Manual

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226 C
HAPTER
11: C
ONFIGURING
S
PANNING
T
REE
■
Port State — Displays the current STP state of a port. If enabled, the
port state determines what forwarding action is taken on traffic.
Possible port states are:
■
Forwarding — Indicates that the port forwards traffic while
learning MAC addresses.
■
Speed — Indicates the speed at which the port is operating.
■
Default Path Cost — Indicates that default path cost is enabled.
■
Path Cost — Indicates the port contribution to the root path cost. The
path cost is adjusted to a higher or lower value, and is used to forward
traffic when a path is re-routed. The field range is 1-200,000,000
.
■
Priority — Priority value of the port. The priority value influences the
port choice when a bridge has two ports connected in a loop. The
priority value is between 0 -240. The priority value is determined in
increments of 16.
■
Designated Bridge ID — Indicates the bridge priority and the MAC
Address of the designated bridge.
■
Designated Port ID — Indicates the selected port priority and
interface.
■
Designated Cost — Indicates the cost of the port participating in the
STP topology. Ports with a lower cost are less likely to be blocked if
STP detects loops.
2
Define the fields.
3
Click . Classic STP is modified on the interface, and the device is
updated.