ZyXEL Communications IES-1248-51 Guía de usuario descargar pdf (Pagina 205)

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Chapter 25 Spanning Tree Protocol

IES-1248-51V User’s Guide

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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 this switch to the root

switch.

Root port ID This is the priority and number of the port on the switch through

which this switch must communicate with the root of the Spanning

Tree. “0x0000” displays when this device 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-1248-51V 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-1248-51V

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-1248-51V will wait before

changing states (that is, listening to learning to forwarding).

Port Status This identifies the IES-1248-51V’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 switch through

which this switch must communicate with the root of the Spanning

Tree. “0x0000” displays when this device 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 this switch 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.

Poll Interval(s)

Set Interval

The text box displays how often (in seconds) this screen refreshes.

You may change the refresh interval by typing a new number in the

text box and then clicking Set Interval.

Stop Click Stop to halt STP statistic polling.

Table 52 Spanning Tree Protocol Status (continued)

LABEL DESCRIPTION

1 2 ... 200 201 202 203 204 205 206 207 208 209 210 ... 653 654

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