Enhancements

Release M.10.10 Enhancements

Caution

Ports configured with the BPDU filter mode remain active (learning and forward frames); however, spanning-tree cannot receive or transmit BPDUs on the port. The port remains in a forwarding state, permitting all broadcast traffic. This can create a network storm if there are any loops (that is, trunks or redundant links) using these ports. If you suddenly have a high load, disconnect the link and remove ("no") the bpdu-filter.

Viewing Status of BPDU Filtering

The show spanning-tree<port-list>detail command has been extended to show per-port BPDU filter mode as shown below.

ProCurve# show spanning-tree a9 detail

Status and Counters - CST Port(s) Detailed Information

Port

: A1

Status

: Up

BPDU Filtering

: Yes

Errant BPUDUs received

: 65

MST Region Boundary

: Yes

External Path Cost

: 200000

External Root Path Cost

: 420021

Administrative Hello Time

: Use Global

Operational Hello Time

: 2

AdminEdgePort

: No

OperEdgePort

: No

AdminPointToPointMAC

: Force-True

OperPointToPointMAC

: Yes

Aged BPDUs Count

: 0

Loop-back BPDUs Count

: 0

TC ACK Flag Transmitted

:

TC ACK Flag Received

: 0

Rows indicating BPDU filtering has been enabled and number of errant BPDUs received.

Column indicating BPDU frames accepted for processing when permitted by BPDU filter.

MST

MST

CFG

CFG

TCN

TCN

BPDUs Tx

BPDUs Rx

BPDUs Tx

BPDUs Rx

BPDUs Tx

BPDUs Rx

----------

----------

----------

----------

----------

----------

8

28

0

0

0

0

Figure 23. Example of BPDU Filter Fields in Show Spanning Tree Detail Command

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