Users Guide

190 Network Administration: Spanning Tree and LAG
FILE LOCATION: C:\Users\gina\Desktop\Checkout_new\Dell Astute\User
Guide\Dell_Astute_Network_Admin_STP.fm
DELL CONFIDENTIAL – PRELIMINARY 8/9/16 - FOR PROOF ONLY
• Learning — The port is currently in the learning mode. The port
cannot forward traffic, however it can learn new MAC addresses.
•
Forwarding — The port is currently in the forwarding mode. The
port can forward traffic and learn new MAC addresses.
–
Role — Displays the port role assigned by the STP algorithm that
provides STP paths. The possible options are:
•
Root — This port provides the lowest cost path to forward packets
to root bridge.
•
Designated — This port is the interface through which the bridge
is connected to the LAN, which provides the lowest cost path
from the LAN to the Root Bridge.
•
Disabled — This port is not participating in the Spanning Tree.
–
Speed — Displays the speed at which the port is operating.
–
Path Cost — Enter 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 being rerouted. Select
Use Default to use the
default path cost.
–
Priority — Select the priority value that influences the port choice
when a bridge has two ports connected in a loop. The priority value is
provided in increments of 16.
–
Designated Bridge ID — Displays the bridge priority and the MAC
address of the designated bridge.
–
Designated Port ID — Displays the designated port’s priority and
interface.
–
Designated Cost — Displays 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.
–
Forward Transitions — Displays the number of times the port has
changed from the
Forwarding state to Blocking .
–
LAG — Displays the LAG to which the port is attached.