User Manual

•
Enabled: The BPDU Filter feature is enabled and applies to all operational edge
ports. An edge port in an operational state connects to hosts that typically drop
BPDUs. If an operational edge port receives a BPDU, it loses its operational status.
If a port on which BPDU filtering is enabled receives BPDUs, the port drops the
BPDUs and remains operational.
13.
If you selected the PVST radio button in Step 7, select one of the following Fast
Backbone radio buttons:
•
Disabled: The Fast Backbone feature is disabled, which is the default setting.
•
Enabled: The Fast Backbone feature is enabled. If an indirect link fails, the switch
can automatically select a new indirect link. With PVST, the switch does not ignore
inferior BPDUs (which occurs with STP), but lets the BPDUs time-out on the port
where they were received. Then, the switch sends root link queries on other
non-designated ports. If the switch receives a positive response, it selects a new
indirect link.
14.
If you selected the PVST radio button in Step 7, select one of the following Fast
Uplink radio buttons:
•
Disabled: The Fast Uplink feature is disabled, which is the default setting.
•
Enabled: The Fast Uplink feature is enabled. If the primary root port goes down,
the recovery time in selecting a new root port is reduced.
15.
If you enabled Fast Uplink in the previous step, in the Max Update Rate field, enter
the maximum update rate in packets per second.
You enter from 0 to 32000 packets per second. The default is 150.
16. Click the Apply button.
Your settings are saved.
17.
To save the settings to the running configuration, click the Save icon.
The following table describes the nonconfigurable fields on the page.
Table 56. STP configuration and status information
DescriptionField
STP Configuration
The identifier for the STP configuration.Configuration Digest Key
The version of the configuration format for the exchange of BPDUs.Configuration Format Selector
STP Status
Main User Manual228Configure Switching Information
AV Line of Fully Managed Switches M4250 Series Main User Manual