RuggedCom RSG2488, Руководство пользователя

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Chapter 5
Setup and Configuration
RUGGEDCOM RSG2488
User Guide
120 Managing Spanning Tree Protocol
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Figure 83: Static VLANs Form
1. VID Box 2. VLAN Name Box 3. Forbidden Ports Box 4. MSTI Box 5. Apply Button 6. Delete Button 7. Reload Button
3. Click Delete .
Section 5.2
Managing Spanning Tree Protocol
The following sections describe how to configure and manage STP:
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Section 5.2.1, “RSTP Operation”
• Section 5.2.2, “RSTP Applications”
• Section 5.2.3, “MSTP Operation”
• Section 5.2.4, “Configuring STP Globally”
• Section 5.2.5, “Configuring STP for Ethernet Ports”
• Section 5.2.6, “Configuring eRSTP”
• Section 5.2.7, “Viewing Global Statistics for STP”
• Section 5.2.8, “Viewing STP Statistics for Ethernet Ports”
• Section 5.2.9, “Managing Multiple Spanning Tree Instances”
• Section 5.2.10, “Clearing Spanning Tree Protocol Statistics”
Section 5.2.1
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.
The Rapid Spanning Tree Protocol (RSTP, IEEE 802.1w) was a further evolution of the 802.1D Spanning Tree
Protocol. It replaced the settling period with an active handshake between bridges that guarantees the rapid