Getting started with MSTP setting
The Multiple Spanning Tree Protocol (MSTP) algorithm and protocol provides simple and full connectivity for frames assigned to any given VLAN throughout a Bridged Local Area Network comprising arbitrarily interconnected Bridges, each operating MSTP, STP (Clause 8 of IEEE Std 802.1D, 1998 Edition), or RSTP (Clause 17 of IEEE Std 802.1D,1998 Edition).
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. These Regions and the other Bridges and LANs are connected into a single Common Spanning Tree (CST).
MSTP Configure
Switch Settings The Switch Settings allow you to control the MSTP parameter from the bridge point of view.
Enable MSTP Enable or Disable MSTP.
Region Name Specify the configuration Region name. The name string has a maximum length of 32 characters and is case sensitive.
Revision Level Specify the configuration revision Level. The range is 0 to 65535.
Max Age configures the maximum age of the current bridge. This is the maximum age of spanning tree protocol information learned from the network on any port before it is discarded.
Forward Delay Forward delay is a time value which controls how fast a port changes its state. The value determines how long the port stays in each of the listening and learning states which precede the forward state. This value is also used to age all dynamic entries in the forwarding databases when a topology change has been detected and is underway.
Max Hops Specify the number of hops in a region before the BPDU is discarded and the information held for a port is aged. the range is 1 to 40; the default is 7.
Bridge Priority
Instance specify the instance to configure the priority.
Priority configures the priority for a MST instance of the current bridge. The instance specify the instance to configure the priority. For priority, the range is 0 to 61440 in increments of 4096.
Note: Max Age <= 2*(Forward Delay-1)