Specifications

Contents
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Catalyst 2970 Switch Software Configuration Guide
78-15462-03
CHAPTER 28 Configuring EtherChannels 28-1
Understanding EtherChannels 28-1
EtherChannel Overview 28-2
Port-Channel Interfaces 28-3
Port Aggregation Protocol 28-3
PAgP Modes 28-4
PAgP Interaction with Other Features 28-5
Link Aggregation Control Protocol 28-5
LACP Modes 28-6
LACP Interaction with Other Features 28-6
Load Balancing and Forwarding Methods 28-6
Configuring EtherChannels 28-8
Default EtherChannel Configuration 28-9
EtherChannel Configuration Guidelines 28-9
Configuring Layer 2 EtherChannels 28-10
Configuring EtherChannel Load Balancing 28-12
Configuring the PAgP Learn Method and Priority 28-13
Configuring LACP Hot-Standby Ports 28-15
Configuring the LACP System Priority 28-15
Configuring the LACP Port Priority 28-16
Displaying EtherChannel, PAgP, and LACP Status 28-17
CHAPTER 29 Troubleshooting 29-1
Recovering from Corrupted Software By Using the XMODEM Protocol 29-2
Recovering from a Lost or Forgotten Password 29-4
Procedure with Password Recovery Enabled 29-5
Procedure with Password Recovery Disabled 29-6
Recovering from a Command Switch Failure 29-8
Replacing a Failed Command Switch with a Cluster Member 29-8
Replacing a Failed Command Switch with Another Switch 29-10
Recovering from Lost Cluster Member Connectivity 29-11
Preventing Autonegotiation Mismatches 29-12
SFP Module Security and Identification 29-12
Using Ping 29-13
Understanding Ping 29-13
Executing Ping 29-13