ZyXEL Communications 2002 Series Guía de usuario descargar pdf (Pagina 43)

VES-1000 Series Ethernet Switch

General, Switch and IP Setup 4-5

link to the root bridge is down. This device then initiates negotiations with other devices to reconfigure the

network to re-establish a valid network topology.

STP assigns five port states (see following table) to eliminate packet looping. A device port is not allowed to go

directly from blocking state to forwarding state so as to eliminate transient loops.

Table 4-4 Port States

PORT STATE DESCRIPTION

Disabled STP is disabled (default).

Blocking Only configuration and management BPDUs are received and processed.

Listening All BPDUs are received and processed.

Learning

All BPDUs are received and processed. Information frames are submitted to the learning process

but not forwarded.

Forwarding All BPDUs are received and processed. All information frames are received and forwarded.

4.2.3 Configuring STP on the VES-1000 Series Switch

To configure STP on the VES-1000 Series switch, select 2 from the main menu, go to the Edit Spanning Tree

Protocol field, press [SPACE BAR] once to select Yes and then [ENTER] to display Menu 2.1 - Spanning

Tree Protocol Setup menu.

Figure 4-4 Menu 2.1 Spanning Tree Protocol Setup

Table 4-5 Menu 2.1 - Spanning Tree Protocol Setup

FIELD DESCRIPTION EXAMPLE

Spanning Tree

Protocol

Press [SPACE BAR] to toggle between Enable and Disable.

Disable

Bridge Priority Bridge priority is used in determining the root device, root port and designated

port. The device with the highest priority (lowest numeric value) becomes the

STP root device. If all devices have the same priority, the device with the lowest

MAC address will then become the root device. The allowed range is 0 to 65535.

The lower the numeric value you assign, the higher the priority for this bridge.

32768 (default)

Hello Time This is the time interval in seconds between configuration message generated

by the root device. The allowed range is 1 to 10 seconds.

2 (default)

Menu 2.1 - Spanning Tree Protocol Setup

Spanning Tree Protocol= Disable

Bridge Priority= 32768

Bridge Hello Time(Time (sec)= 2

Bridge Max Age(Age (sec)= 20

Forward Delay(Delay (sec)= 15

Press ENTER to Confirm or ESC to Cancel:

Press Space Bar to Toggle.

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