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MST Instance Settings
Multiple Spanning Tree Protocol, or MSTP enables the
grouping of multiple VLANs with the same topology
requirements into one Multiple Spanning Tree Instance
(MSTI). MSTP then builds an Internal Spanning Tree
(IST) for the region containing commonly configured
MSTP bridges. Instances are not supported in STP or
RSTP. Instead, they have the same spanning tree in
common within the VLAN. MSTP provides the capability
to logically divide a Layer 2 network into regions. Every
region can contain multiple instances of spanning trees.
In MSTP, all of the interconnected bridges that have the
same MSTP configuration comprise an MST region.
A Common Spanning Tree (CST) interconnects all
adjacent MST Regions and acts as a virtual bridge node
for communications between STP or RSTP nodes in
the global network. MSTP connects all bridges and LAN
segments with a single Common and Internal Spanning
Tree (CIST). The CIST is formed as a result of the running
spanning tree algorithm between Switches that support
STP, RSTP, and MSTP protocols. Once you specify the
VLANs you wish to include in a Multiple Spanning Tree
Instance (MSTI), the protocol will automatically build an
MSTI tree to maintain connectivity among each of the
VLANs. MSTP maintains contact with the global network
because each instance is treated as an RSTP node in the
Common Spanning Tree (CST).
Click the Edit button to configure the MST settings. Next,
enter information for the VLAN List and choose the
priority you wish to use from the drop-down list.
Summary of Contents for EWS5912FP
Page 7: ...7 Chapter 1 Product Overview ...
Page 19: ...19 Chapter 2 Controller Management ...
Page 47: ...47 Apply Click APPLY to update the the system settings ...
Page 65: ...65 Chapter 3 Switch Management ...
Page 78: ...78 Apply Click APPLY to update the the system settings ...
Page 165: ...165 Apply Click Apply to update the system settings ...
Page 187: ...187 Click the Apply button to accept the changes or the Cancel button to discard them ...
Page 194: ...194 Chapter 4 Maintenance ...
Page 198: ...198 Appendix ...