beautypg.com

Brocade FastIron Ethernet Switch Platform and Layer 2 Switching Configuration Guide User Manual

Page 305

background image

CLI display of 802.1W summary (Continued)

TABLE 49

Field

Description

Pri

The configured priority of the port. The default is 128 or 0x80.

Port Path Cost

The configured path cost on a link connected to this port.

P2P Mac

Indicates if the point-to-point-mac parameter is configured to be a point-to-point link:

• T - The link is configured as a point-to-point link.
• F - The link is not configured as a point-to-point link. This is the default.

Edge port

Indicates if the port is configured as an operational Edge port:

• T - The port is configured as an Edge port.
• F - The port is not configured as an Edge port. This is the default.

Role

The current role of the port:

• Root
• Designated
• Alternate
• Backup
• Disabled

Refer to

Bridges and bridge port roles

on page 271 for definitions of the roles.

State

The port current 802.1W state. A port can have one of the following states:

• Forwarding
• Discarding
• Learning
• Disabled

Refer to

Bridge port states

on page 276 and

Edge port and non-edge port states

on page

277.

Designated Cost

The best root path cost that this port received, including the best root path cost that it can
transmit.

Designated Bridge

The ID of the bridge that sent the best RST BPDU that was received on this port.

To display detailed information about 802-1W, enter the 802-1w command.

device#show 802-1w detail

======================================================================

VLAN 1 - MULTIPLE SPANNING TREE (MSTP - IEEE 802.1W) ACTIVE

======================================================================

BridgeId 800000e080541700, forceVersion 2, txHoldCount 3

Port 1 - Role: ROOT - State: FORWARDING

PathCost 200000, Priority 128, AdminOperEdge F, AdminPt2PtMac F

DesignatedPriority - Root: 0x800000e0804c9c00, Bridge: 0x800000e080541700

ActiveTimers - rrWhile 4 rcvdInfoWhile 4

MachineStates - PIM: CURRENT, PRT: ROOT_PORT, PST: FORWARDING

TCM: ACTIVE, PPM: SENDING_STP, PTX: TRANSMIT_IDLE

Received - RST BPDUs 0, Config BPDUs 1017, TCN BPDUs 0

Port 2 - Role: DESIGNATED - State: FORWARDING

PathCost 200000, Priority 128, AdminOperEdge F, AdminPt2PtMac F

DesignatedPriority - Root: 0x800000e0804c9c00, Bridge: 0x800000e080541700

ActiveTimers - helloWhen 0

Spanning Tree Protocol

FastIron Ethernet Switch Platform and Layer 2 Switching Configuration Guide

305

53-1003086-04