To Next Page

To Previous Page

3-34

Multiple Instance Spanning-Tree Operation

Configuring MSTP

PVST FilteringI

If you configure a port for PVST filtering instead of PVST protection, the port

remains in operation but traps are still generated and the BPDU counter

hpSwitchStpPortErrantBpduCounter is incremented.

Caution Enabling the PVST filter feature allows the port to continuously forward

packets without spanning-tree intervention, which could result in loop forma-

tion. If this occurs, disable the port and then reconfigure it with these com-

mands:

no spanning-tree <port-list> bpdu-filter

no spanning-tree <port-list> pvst-filter

Figure 3-11. Example of Enabling PVST Filtering on a Port

Manually Re-enabling a Port

You can re-enable ports manually or use the automatic re-enable timer com-

mand as shown:

HP Switch(config)# spanning-tree

bpdu-protection-timeout 120

Syntax: [no] spanning-tree <port-list> pvst-filter

Enables or disables the PVST filter feature on the port or range

of ports specified. The command indicates which ports are

not expected to receive any PVST BPDUs.

Default: Disabled on all ports

HP Switch(config)# spanning-tree 8 pvst-filter

Warning: The BPDU filter allows the port to go into a continuous

forwarding mode and spanning-tree will not interfere, even if

the port would cause a loop to form in the network topology.

If you suddenly experience high traffic load, disable the port

and reconfigure the BPDU filter with the CLI command(s):

"no spanning-tree PORT_LIST bpdu-filter"

"no spanning-tree PORT_LIST pvst-filter"

Other manuals for HP 3500 Series

Questions and Answers:

Need help?

Do you have a question about the HP 3500 Series and is the answer not in the manual?

General