ZyXEL Communications IES-708 Betriebsanweisung PDF herunterladen (Seite 172)

Chapter 23 Spanning Tree Protocol

IES-708-22A User’s Guide

172

Bridge Status If STP is activated, the following fields appear. If STP is not activated, Disabled

appears.

Our bridge ID This is the unique identifier for this bridge, consisting of bridge priority plus MAC

address. This ID is the same in Designated root ID if the IES-708-22A is the

root switch.

Designated root ID This is the unique identifier for the root bridge, consisting of bridge priority plus

MAC address. This ID is the same in Our bridge ID if the IES-708-22A is the

root switch.

Topology change

times

This is the number of times the spanning tree has been reconfigured.

Time since change This is the time since the spanning tree was last reconfigured.

Cost to root This is the path cost from the root port on the IES-708-22A to the root switch.

Root port ID This is the priority and number of the port on the IES-708-22A through which the

IES-708-22A must communicate with the root of the Spanning Tree. “0x0000”

displays when the IES-708-22A is the root switch.

Root max age

(second)

This is the maximum time (in seconds) the root switch can wait without receiving

a configuration message before attempting to reconfigure.

Root hello time

(second)

This is the time interval (in seconds) at which the root switch transmits a

configuration message. The root bridge determines Hello Time, Max Age and

Forwarding Delay.

Root forward delay

(second)

This is the time (in seconds) the root switch will wait before changing states

(that is, listening to learning to forwarding).

Max age (second) This is the maximum time (in seconds) the IES-708-22A can wait without

receiving a configuration message before attempting to reconfigure.

Hello time (second) This is the time interval (in seconds) at which the IES-708-22A transmits a

configuration message. The root bridge determines Hello Time, Max Age and

Forwarding Delay.

Forward delay

(second)

This is the time (in seconds) the IES-708-22A will wait before changing states

(that is, listening to learning to forwarding).

Port Status This identifies the IES-708-22A’s ports that support the use of STP. If STP is

activated, the following fields appear. If STP is not activated, Disabled appears.

State This field displays the port’s RSTP (or STP) state. With RSTP, the state can be

discarding, learning or forwarding. With STP, the state can be disabled,

blocking, listening, learning, or forwarding.

Disabled appears when RSTP has not been turned on for the individual port or

the whole device.

Port ID This is the priority and number of the port on the IES-708-22A through which the

IES-708-22A must communicate with the root of the Spanning Tree. “0x0000”

displays when the IES-708-22A is the root switch.

Path cost This is the path cost from this port to the root switch.

Cost to root This is the path cost from the root port on the IES-708-22A to the root switch.

Designated bridge This is the unique identifier for the bridge that has the lowest path cost to reach

the root bridge, consisting of bridge priority plus MAC address.

Designated port This is the port on the designated bridge that has the lowest path cost to reach

the root bridge, consisting of bridge priority.

Table 51 Advanced Application > Spanning Tree Protocol (continued)

LABEL DESCRIPTION

1 2 ... 167 168 169 170 171 172 173 174 175 176 177 ... 447 448

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