RSTP and MSTP
3.Apply, verify, and save the configuration.
Multiple Spanning Tree ProtocolIEEE 802.1s Multiple Spanning Tree extends the IEEE 802.1w Rapid Spanning Tree Protocol through multiple Spanning Tree Groups. MSTP maintains up to 32
In Multiple Spanning Tree Protocol (MSTP), several VLANs can be mapped to each
MSTP region
A group of interconnected bridges that share the same attributes is called an MST region. Each bridge within the region must share the following attributes:
•Alphanumeric name
•Revision level
•
MSTP provides rapid reconfiguration, scalability, and control due to the support of regions, and multiple
Common Internal Spanning Tree
The Common Internal Spanning Tree (CIST) provides a common form of Spanning Tree Protocol, with one Spanning Tree instance that can be used throughout the MSTP region. CIST allows the switch to interoperate with legacy equipment, including devices that run IEEE 802.1d (STP).
CIST allows the MSTP region to act as a virtual bridge to other bridges outside of the region, and provides a single
CIST is the default spanning tree group. When VLANs are removed from STG
CIST port configuration includes Hello time, Edge port status (enable/disable), and Link Type. These parameters do not affect Spanning Tree Groups
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