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User's Manual

ManualsBrandsPLANET Technology ManualsLAN SwitchesLayer 3 48-Port 10G SFP+ + 2-Port 40G QSFP+ + 4-Port 100G QSFP28 Managed Switch
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MSTI
MSTI stands for Multiple Spanning Tree Instance. MSTP permits different VLANs to be classified into different
spanning trees to establish multiple MSTIs. In general, MSTI 0 means CIST, which can be expanded to the
whole network, while other MSTIs are each in a region. Each MSTI can be distributed to multiple VLANs.
Originally, all VLANs are distributed in CIST.
All MSTIs in the MST region are independent and they can choose different switches to be their roots. For
example, in region 3 of figure 2.1, the root of MSTI01 may be the switch at the left bottom corner, while the
root of MSTI00 (CIST) may be the switch in the middle.
36.1.4 Port Role
MSTP, like RSTP, has the similar function to conduct port role distribution.