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Vlan Participation In Spanning Tree Groups - HP 445946-001 Application Manual

10gb ethernet bl-c switch.
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Figure 9
Two VLANs on one instance of Spanning Tree Protocol
In the following figure, VLAN 1 and VLAN 2 belong to different Spanning Tree Groups. The two instances
of spanning tree separate the topology without forming a loop, so that both VLANs can forward packets
between the switches without losing connectivity.
Two VLANs on separate instances of Spanning Tree Protocol
Figure 10

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.
VLAN participation in Spanning Tree Groups
Table 12
Switch 1
Switch 2
VLAN 1
Spanning Tree Group 1
Port 20
Spanning Tree Group 1
Port 20
Spanning Tree Protocol
VLAN 2
Spanning Tree Group 2
Port 21
Spanning Tree Group 2
Port 21
72

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