H3C Technologies H3C S5560 Series Switches - Manual (Page 104)

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MSTP basic concepts
Figure 23 shows a switched network that comprises four MST regions, each MST region comprising four
MSTP devices. Figure 24 shows the networking topology of MST region 3.
Figure 23 Basic concepts in MSTP
Figure 24 Network diagram and topology of MST region 3
MST region 1
MST region 2 MST region 3
MST region 4
VLAN 1 MSTI 1
VLAN 2 MSTI 2
Other VLANs MSTI 0
VLAN 1 MSTI 1
VLAN 2 MSTI 2
Other VLANs MSTI 0
VLAN 1 MSTI 1
VLAN 2 MSTI 2
Other VLANs MSTI 0
VLAN 1 MSTI 1
VLAN 2&3 MSTI 2
Other VLANs MSTI 0
CST
T
o
MST regi
on 2