HP 1:10Gb Ethernet BL-c Switch for c-Class BladeSystem Application Guide

Spanning Tree Protocol

VLAN participation in Spanning Tree Groups

The following table shows which switch ports participate in each Spanning Tree Group. By default, server

ports (ports 1-16) do not participate in Spanning Tree, even though they are members of their respective

VLANs.

Table 12 VLAN participation in Spanning Tree Groups

VLAN 1 VLAN 2

Switch 1 Spanning Tree Group 1

Port 24

Spanning Tree Group 2

Port 25

Switch 2 Spanning Tree Group 1

Port 24

Spanning Tree Group 2

Port 25

Configuring Multiple Spanning Tree Groups

This section explains how to assign each VLAN to its own Spanning Tree Group on the switches 1 and 2.

By default, Spanning Tree Groups 2-127 are empty, and Spanning Tree Group 1 contains all configured

VLANs until individual VLANs are explicitly assigned to other Spanning Tree Groups. Except for the

default Spanning Tree Group 1, which may contain more than one VLAN, Spanning Tree Groups 2-128

may contain only one VLAN each.

NOTE: Each instance of Spanning Tree Group is enabled by default.

Configuring Switch 1 (CLI example)

1. Configure port and VLAN membership on Switch 1 as described in the “Configuring ports and

VLANs on Switch 1 (CLI example)” section, in the “VLANs” chapter of this guide.

2. Add VLAN 2 to Spanning Tree Group 2.

>> /cfg/l2/stp 2 (Select Spanning Tree Group 2)

>> Spanning Tree Group 2# add 2 (Add VLAN 2)

3. VLAN 2 is automatically removed from spanning tree group 1.

4. Apply and save.

>> apply (Apply the port configurations)

>> save (Save the port configurations)

Configuring Switch 2 (CLI example)

1. Configure port and VLAN membership as described in the “Configuring ports and VLANs on Switch