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CHAPTER
7-1
Cisco ONS 15310-CL, ONS 15310-MA, and ONS 15310-MA SDH Ethernet Card Software Feature and Configuration Guide, R9.1 and R9.2
78-19415-01
7
Configuring STP and RSTP on the ML-Series Card
This chapter describes the IEEE 802.1D Spanning Tree Protocol (STP) and the ML-Series
implementation of the IEEE 802.1W Rapid Spanning Tree Protocol (RSTP). It also explains how to
configure STP and RSTP on the ML-Series card.
This chapter consists of these sections:
•
STP Features, page 7-1
•
RSTP Features, page 7-9
•
Interoperability with IEEE 802.1D STP, page 7-15
•
Configuring STP and RSTP Features, page 7-15
•
Verifying and Monitoring STP and RSTP Status, page 7-20
STP Features
These sections describe how the spanning-tree features work:
•
STP Overview, page 7-2
•
Supported STP Instances, page 7-2
•
Bridge Protocol Data Units, page 7-2
•
Election of the Root Switch, page 7-3
•
Bridge ID, Switch Priority, and Extended System ID, page 7-4
•
Spanning-Tree Timers, page 7-4
•
Creating the Spanning-Tree Topology, page 7-5
•
Spanning-Tree Interface States, page 7-5
•
Spanning-Tree Address Management, page 7-8
•
STP and IEEE 802.1Q Trunks, page 7-8
•
Spanning Tree and Redundant Connectivity, page 7-8
•
Accelerated Aging to Retain Connectivity, page 7-9