HP BladeSystem bc2000 - Blade PC User Manual page 126

Configuring Spanning Tree
❏
Role — Indicates the port role assigned by the STP algorithm to provide to STP paths.
The possible field values are:
◆
Root — Provides the lowest cost path to forward packets to the root device.
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Designated — Indicates the port or LAG through which the designated device is
attached to the LAN.
◆
Alternate — Provides an alternate path to the root device from the root interface.
◆
Backup — Provides a backup path to the designated port path toward the Spanning
Tree leaves. Backup ports occur only when two ports are connected in a loop by a
point-to-point link or when a LAN has two or more connections to a shared segment.
◆
Disabled — Indicates the port is not participating in the Spanning Tree.
❏
Mode — Indicates the STP mode by which STP is enabled on the device. The possible
field values are:
◆
Classic STP — Classic STP is enabled on the device. This is the default value.
◆
Rapid STP — Rapid STP is enabled on the device.
◆
Multiple STP — Multiple STP is enabled on the device.
❏
Interface Priority — Defines the interface priority for the specified instance. The
default value is 128.
❏
Path Cost — Indicates the port contribution to the Spanning Tree instance. The range
should always be 1-200,000,000.
❏
Designated Bridge ID — Displays the ID of the bridge that connects the link or shared
LAN to the root.
❏
Designated Port ID — Displays the ID of the port on the designated bridge that
connects the link or the shared LAN to the root.
❏
Designated Cost — Indicates that the default path cost is assigned according to the
method selected on the Spanning Tree Global Settings.
❏
Forward Transitions — Indicates the number of times the LAG State has changed from
a Forwarding state to a Blocking state.
❏
Remain Hops — Indicates the hops remaining to the next destination.
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