STP Bridge Global Settings
This window is used to enable and configure the STP bridge global settings on the Swtich.
To view this window, click L2 features > Spanning Tree > STP Bridge Global Settings as shown below:
| Figure 3 - 57 STP Bridge Global Settings window |
The following parameters can be set: | |
|
|
Parameter | Description |
|
|
STP State | Use the radio buttons to enable or disable the STP Status. |
|
|
STP Version | Use the |
| Switch. There are three choices: |
| STPCompatability – Select this parameter to set the Spanning Tree Protocol (STP) |
| globally on the switch. |
| RSTP – Select this parameter to set the Rapid Spanning Tree Protocol (RSTP) globally |
| on the Switch. |
| MSTP – Select this parameter to set the Multiple Spanning Tree Protocol (MSTP) |
| globally on the Switch. |
|
|
Forwarding BPDU | This field can be Enabled or Disabled. When Enabled, it allows the forwarding of STP |
| BPDU packets from other network devices. The default is Disabled. |
|
|
Bridge Max Age | The Max Age may be set to ensure that old information does not endlessly circulate |
| through redundant paths in the network, preventing the effective propagation of the new |
| information. Set by the Root Bridge, this value will aid in determining that the Switch has |
| spanning tree configuration values consistent with other devices on the bridged LAN. If |
| the value ages out and a BPDU has still not been received from the Root Bridge, the |
| Switch will start sending its own BPDU to all other switches for permission to become |
| the Root Bridge. If it turns out that your switch has the lowest Bridge Identifier, it will |
| become the Root Bridge. The user may choose a time between 6 and 40 seconds. The |
| default value is 20. |
|
|
Bridge Hello Time | The Hello Time can be set from 1 to 10 seconds. This is the interval between two |
| transmissions of BPDU packets sent by the Root Bridge to tell all other switches that it is |
| indeed the Root Bridge. |
|
|
Bridge Forward Delay | The Forward Delay can be from 4 to 30 seconds. Any port on the Switch spends this |
time in the listening state while moving from the blocking state to the forwarding state. | |
|
|
TX Hold Count | Used to set the maximum number of Hello packets transmitted per interval. The count |
| can be specified from 1 to 10. The default is 6. |
|
|
| 109 |
