Redundant Topology — Without STP
y Necessary for the link of a switch failover y Load balancing
Disadvantages: y May cause broadcast storms y May cause multiple frame copies to be sent y May cause FDB table instability
Frame looping problems Layer 2 has no mechanism to stop looping as layer 3 has with TTL
Alcatel-Lucent Scalable IP Networks v1.1
Scalable IP Networks v1.00
Module 3 |
39
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Redundancy Advantages:
Module 3 – page 39