System information
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3-13. MSTP
The implementation of MSTP is according to IEEE 802.1Q 2005 Clause 13 –
Multiple Spanning Tree Protocol. MSTP allows frames assigned to different VLANs to
follow separate paths, each based on an independent Multiple Spanning Tree Instance
(MSTI), within Multiple Spanning Tree (MST) Regions composed of LANs and or MST
Bridges. Proper configuration of MSTP in an 802.1Q VLAN environment can ensure a loop-
free data path for a group of vlans within an MSTI. Redundant path and load balancing in vlan
environment is also achieved via this feature. A spanning tree instance called
CIST(Common
and Internal Spanning Tree) always exists . Up to 64 more spanning tree instances
(MSTIs) can be provisioned.
3-13-1 Status
Function name:
MSTP State
Function description:
To enable or disable MSTP. And to select a version of Spanning Tree protocol which
MSTP should operate on.
Fig. 3-153
MSTP State
Parameter description:
Multiple Spanning Tree Protocol:
Disabled / Enabled
Force Version:
STP / RSTP / MSTP