5
Software Release 2.6.1
C613-02025-00 REV C
The Forwarding Process ............................................................................ 84
Layer 2 Filtering ........................................................................................ 85
The Egress Rules ....................................................................................... 87
Quality of Service ............................................................................................ 87
Spanning Tree Protocol (STP) ........................................................................... 89
Spanning Tree Modes ............................................................................... 89
Spanning Tree and Rapid Spanning Tree Port States .................................. 90
Overlapping VLANs belonging to multiple Spanning Tree instances ........... 91
Configuring STP ....................................................................................... 92
Interfaces to Layer 3 Protocols ....................................................................... 101
IGMP Snooping ............................................................................................ 101
Triggers ......................................................................................................... 104
CHAPTER 6
Layer 3
Internet Protocol (IP) ..................................................................................... 106
IP Multicasting .............................................................................................. 106
Routing Information Protocol (RIP) ................................................................ 107
Novell IPX ..................................................................................................... 107
AppleTalk ...................................................................................................... 108
Resource Reservation Protocol (RSVP) ............................................................ 109
CHAPTER 7
Maintenance and Troubleshooting
This Chapter ................................................................................................. 111
How the Switch Starts Up ............................................................................. 112
How to Avoid Problems ................................................................................ 113
What to Do if You Clear FLASH Memory Completely ..................................... 115
What To Do if ISDN Fails to Connect ............................................................. 116
What to Do if the PPP Link Disconnects Regularly .......................................... 116
What to Do if Passwords are Lost .................................................................. 116
Getting the Most Out of Technical Support ................................................... 117
Resetting Switch Defaults ............................................................................. 118
Checking Connections Using PING ................................................................ 118
Troubleshooting IP Configurations ................................................................ 119
Troubleshooting DHCP IP Addresses .............................................................. 120
Troubleshooting IPX Configurations .............................................................. 121
Using Trace Route for IP Traffic ...................................................................... 123
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