Chapter 5
Setup and Configuration
RUGGEDCOM ROX II
User Guide
716 Adding a Multiple Spanning Tree Instance
1. Change the mode to Edit Private or Edit Exclusive.
2. Navigate to switch » spanning-tree » mstp-instance and click <Add mstp-instance> in the menu. The
Key Settings form appears.
Figure 827: Key Settings Form
1. MSTP Instance ID List 2. Add Button
3. Configure the following parameter(s) as required:
Parameter Description
MSTP Instance ID The Multiple Spanning Tree Protocol (MSTP) instance ID.
4. Click Add to create the instance. The MSTP Instance form appears.
Figure 828: MSTP Instance Form
1. Bridge Priority List
5. Configure the following parameter(s) as required:
Parameter Description
Bridge Priority Synopsis: 4096, 8192, 12288, 16384, 20480, 24576, 28672, 32768, 36864, 40960,
45056, 49152, 53248, 57344, 61440
Default: 32768
Bridge priority provides a way to control the topology of the Spanning Tree Protocol
(STP) connected network. The desired root and designated bridges can be configured
for a particular topology. The bridge with the lowest priority will become the root. In the
event of a failure of the root bridge, the bridge with the next lowest priority will then
become the root. Designated bridges that (for redundancy purposes) service a common
Local Area Network (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 normal
and abnormal conditions.
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