CCNA P3 V2 - Redundant Topology Overview

© 2002, Cisco Systems, Inc. All rights reserved.
© 2002, Cisco Systems, Inc. All rights reserved. ICND v2.0—3-2© 2002, Cisco Systems, Inc. All rights reserved. 2
Redundant Topology Overview
© 2002, Cisco Systems, Inc. All rights reserved. ICND v2.0—3-3
Objectives
Upon completing this lesson, you will be
able to:
•
Describe the features of redundant switch and
bridge topologies
•
Explain the problems associated with broadcast
storms, multiple frame transmissions, and MAC
address table instability
•
Describe loop avoidance and explain how it can
solve redundant switch topology issues
© 2002, Cisco Systems, Inc. All rights reserved. ICND v2.0—3-4
•
Redundant topology eliminates single points of failure.
•
Redundant topology causes broadcast storms, multiple
frame copies, and MAC address table instability problems.
Redundant Topology
© 2002, Cisco Systems, Inc. All rights reserved. ICND v2.0—3-5
•
Host X sends a broadcast.
•
Switches continue to propagate broadcast traffic
over and over.
Broadcast Storms