Contents
xxiii
Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
78-11380-12
Understanding the Port Aggregation Protocol and Link Aggregation Protocol 30-3
PAgP and LACP Modes 30-4
Physical Learners and Aggregate-Port Learners 30-5
PAgP and LACP Interaction with Other Features 30-6
Understanding Load Balancing and Forwarding Methods 30-6
Configuring EtherChannels 30-7
Default EtherChannel Configuration 30-8
EtherChannel Configuration Guidelines 30-8
Configuring Layer 2 EtherChannels 30-9
Configuring EtherChannel Load Balancing 30-11
Configuring the PAgP Learn Method and Priority 30-12
Configuring the LACP Port Priority 30-12
Configuring Hot Standby Ports 30-13
Configuring the LACP System Priority 30-13
Displaying EtherChannel, PAgP, and LACP Status 30-14
CHAPTER
31 Troubleshooting 31-1
Using Recovery Procedures 31-1
Recovering from a Software Failure 31-2
Recovering from Lost or Forgotten Passwords on Non-LRE Catalyst 2950 Switches 31-2
Recovering from Lost or Forgotten Passwords on Catalyst 2950 LRE Switches 31-4
Password Recovery with Password Recovery Enabled 31-5
Procedure with Password Recovery Disabled 31-6
Recovering from Lost or Forgotten Passwords on Catalyst 2955 Switches 31-8
Recovering from a Command Switch Failure 31-10
Replacing a Failed Command Switch with a Cluster Member 31-10
Replacing a Failed Command Switch with Another Switch 31-12
Recovering from Lost Member Connectivity 31-13
Preventing Autonegotiation Mismatches 31-14
GBIC and SFP Module Security and Identification 31-14
Diagnosing Connectivity Problems 31-14
Using Ping 31-15
Understanding Ping 31-15
Executing Ping 31-15
Using Layer 2 Traceroute 31-16
Understanding Layer 2 Traceroute 31-16
Usage Guidelines 31-16
Displaying the Physical Path 31-17
Diagnosing LRE Connection Problems 31-18
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