User guide

RUGGEDCOM ROS
User Guide
Chapter 5
Setup and Configuration
Managing Spanning Tree Protocol 133
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Figure 89: Static VLANs Form
1. VID Box 2. VLAN Name Box 3. Forbidden Ports Box 4. IGMP Options 5. MSTI Box 6. Apply Button 7. Delete Button
8. Reload Button
3. Click Delete.
Section 5.3
Managing Spanning Tree Protocol
The following sections describe how to configure and manage STP:
• Section 5.3.1, “RSTP Operation”
• Section 5.3.2, “RSTP Applications”
• Section 5.3.3, “Configuring STP Globally”
• Section 5.3.4, “Configuring STP for Specific Ethernet Ports”
• Section 5.3.5, “Configuring eRSTP”
• Section 5.3.6, “Viewing Global Statistics for STP”
• Section 5.3.7, “Viewing STP Statistics for Ethernet Ports”
• Section 5.3.8, “Clearing Spanning Tree Protocol Statistics”
Section 5.3.1
RSTP Operation
The 802.1D Spanning Tree Protocol (STP) was developed to enable the construction of robust networks that
incorporate redundancy while pruning the active topology of the network to prevent loops. While STP is effective,
it requires that frame transfer halt after a link outage until all bridges in the network are guaranteed to be aware of
the new topology. Using the values recommended by 802.1D, this period lasts 30 seconds.