Pvst Protection And Filtering - HP 3500 Series Advanced Traffic Management Manual

Multiple Instance Spanning-Tree Operation
Configuring MSTP
HP Switch(config)# show configuration
. . .
spanning-tree
spanning-tree A1 bpdu-protection
spanning-tree C7 bpdu-protection
spanning-tree Trk2 priority 4
. . .
Figure 3-9. Example of BPDU Filters in the Show Configuration Command
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BPDU protected ports are displayed as separate entries of the spanning tree
category within the configuration file.

PVST Protection and Filtering

These options are available for switches that support the MSTP protocol only.
They are not supported for switches running RSTP.
PVST Protection
If an HP switch in the core of a network receives Per Vlan Spanning Tree
(PVST) BPDUs and forwards the unrecognized PVST BPDUs on to MSTP-only
switches, those switches then disconnect themselves from the network. This
can create instability in the network infrastructure.
When the PVST protection feature is enabled on a port and a PVST BPDU is
received on that port, the interface on which the PVST BPDU arrived is shut
down, which isolates the sending switch from the rest of the network. An event
message is logged and an SNMP notification trap is generated. The errant
BPDU counter hpSwitchStpPortErrantBpduCounter is incremented. The PVST
protection feature is enabled per-port.
Rows showing ports with BPDU protection enabled