Stp Per Vlan Group - HP ProCurve 9304M Installation And Configuration Manual

HP9300(config-vlan-10)# no super-span
Syntax: [no] super-span
Displaying SuperSpan Information
To display the boundary interface configuration and BPDU statistics, enter the following command:
HP9300(config)# show super-span
CID 1 Boundary Ports:
Port C-BPDU
Rxed
1/1 1
1/2 0
Total 1
CID 2 Boundary Ports:
Port C-BPDU
Rxed
2/1 0
2/2 0
Total 0
In this example, the device has two SuperSpan customer IDs.
Syntax: show superspan [cid <num>]
The cid <num> parameter specifies a SuperSpan customer ID. If you do not specify a customer ID, information
for all the customer IDs configured on the device is shown.
This command shows the following information.
Table 8.7: CLI Display of SuperSpan Customer ID Information
This Field...
CID
Port
C-BPDU Rxed
C-BPDU Txed
T-BPDU Rxed
T-BPDU Txed
To display general STP information, see "Displaying STP Information" on page 8-8.

STP per VLAN Group

STP per VLAN group is an STP enhancement that provides scalability while overcoming the limitations of the
following scalability alternatives:
• Standard STP – You can configure only 128 instances of standard STP on an HP device. It is possible to
need more instances of STP than this in large configurations. Using STP per VLAN group, you can
aggregate STP instances.
• Single STP – Single STP allows all the VLANs to run STP, but each VLAN runs the same instance of STP,
resulting in numerous blocked ports that do not pass any Layer 2 traffic. STP per VLAN group uses all
available links by load balancing traffic for different instances of STP on different ports. A port that blocks
traffic for one spanning tree forwards traffic for another spanning tree.
Configuring Spanning Tree Protocol (STP) and Advanced STP Features
C-BPDU T-BPDU T-BPDU
Txed Rxed Txed
0 0 0
0 0 0
0 0 0
C-BPDU T-BPDU T-BPDU
Txed Rxed Txed
0 3 0
0 0 0
0 3 0
Displays...
The SuperSpan customer ID number.
The boundary port number.
The number of BPDUs received from the client spanning tree.
The number of BPDUs sent to the client spanning tree.
The number of BPDUs received from the SuperSpan tunnel.
The number of BPDUs sent to the SuperSpan tunnel.
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