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ROS™ v3.5 154 RS400
5.4.4 Bridge MSTI Parameters
Figure 104: Bridge MSTI Parameters
Instance ID
Synopsis: 0 to 16
Default: 1
The Instance ID refers to the MSTI (Multiple Spanning Tree Instance) ID. Specify an Instance ID
and select GET in order to load the parameters of the page corresponding to the selected MSTI.
Changes to parameters that are subsequently applied will apply to the selected Instance ID.
Note: Bridge Parameters for the IST (MSTI zero), are accessible via the Bridge RSTP
Parameters menu (see section 5.4.1).
Bridge Priority
Synopsis: { 0, 4096, 8192, 12288, 16384, 20480, 24576, 28672, 32768, 36864, 40960, 45056, 4
9152, 53248, 57344, 61440 }
Default: 32768
Bridge Priority provides a way to control the topology of the STP connected network. The
desired Root and Designated bridges can be configured for a particular topology. The bridge
with the lowest priority will become root. In the event of a failure of the root bridge, the bridge
with the next lowest priority will then become root. Designated bridges that (for redundancy
purposes) service a common LAN also use priority to determine which bridge is active. In this
way careful selection of Bridge Priorities can establish the path of traffic flows in both normal
and abnormal conditions.