Technical information

AX Series L2 Loop Detection Configuration Guide (Edition 2)

Contents

1. Impact of an L2 Loop and the Countermeasure Functionality...........................................................5

1.1 L2 loops and their risks ...............................................................................................................5

1.2 L2 loop control functionality.........................................................................................................6

1.3 Auto MDI/MDI-X suppression......................................................................................................6

1.4 L2 loop detection functionality.....................................................................................................7

1.5 Storm control .............................................................................................................................10

2. Examples of the Basic Usage of the L2 Loop Detection Functionality ............................................12

2.1 Example of an application configuration ...................................................................................12

2.2 Important points for constructing a system ...............................................................................14

2.3 Configuration example ..............................................................................................................16

2.4 Troubleshooting with operation commands ..............................................................................18

2.5 Other operation commands.......................................................................................................23

3. Restrictions and Notes.....................................................................................................................24

3.1 For Auto MDI/MDI-X suppression .............................................................................................24

3.2 For L2 loop detection functionality ............................................................................................24

Appendix: Configuration File ....................................................................................................................26