Dell POWEREDGE M1000E - Manual (Page 637)

Configuring the Spanning Tree Protocol 637
The logical representation of the MSTP environment for these three switches
is shown in Figure 22-3.
Figure 22-3. Logical MSTP Environment
Switch A
Switch B
Switch C
Port 1
Port 1
VLAN 10* VLAN 10
VLAN 10
Port 2
Port 1
Switch A
Switch B
Switch C
Port 1
Port 2
VLAN 20 VLAN 20
VLAN 20
Port 2
Port 2
MSTI 1
MSTI 2
MSTI 1 Regional Root & CIST Regional Root
CIST Regional Root
MSTI 2 Regional Root