Contents
v
Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide—Release 8.2GLX
78-15908-01
Checking Ethernet and Fast Ethernet Port Connectivity 4-8
CHAPTER
5 Configuring Gigabit Ethernet Switching 5-1
Understanding How Gigabit Ethernet Works 5-1
Understanding How Gigabit Ethernet Flow Control Works 5-1
Understanding How Port Negotiation Works 5-3
Understanding How Oversubscribed Gigabit Ethernet Works 5-4
Default Gigabit Ethernet Configuration 5-6
Configuring Gigabit Ethernet Ports 5-7
Assigning Gigabit Ethernet Port Names 5-7
Configuring Gigabit Ethernet Port Priority Levels 5-8
Configuring Flow Control on Gigabit Ethernet Ports 5-8
Enabling Port Negotiation on Gigabit Ethernet Ports 5-9
Disabling Port Negotiation 5-9
Configuring errdisable State Gigabit Ethernet Port Timeout Periods 5-9
Checking Gigabit Ethernet Port Connectivity 5-10
CHAPTER
6 Configuring Fast EtherChannel and Gigabit EtherChannel 6-1
Understanding How EtherChannel Works 6-1
EtherChannel Overview 6-2
Understanding Frame Distribution 6-2
Hardware Support for EtherChannel 6-2
PAgP and LACP 6-2
EtherChannel Configuration Guidelines and Restrictions 6-3
Guidelines for Configuring a Port 6-3
Guidelines for Configuring VLANs and Trunks 6-4
EtherChannel Interaction with other Features 6-4
Understanding PAgP 6-5
PAgP Modes 6-5
Understanding Administrative Groups and EtherChannel IDs 6-6
Configuring EtherChannel Using PAgP 6-6
Creating an EtherChannel 6-7
Defining an EtherChannel Administrative Group 6-7
Setting the EtherChannel Spanning Tree Port Cost 6-8
Setting the EtherChannel Spanning Tree Port VLAN Cost 6-9
Removing an EtherChannel Bundle 6-9
Displaying EtherChannel Configuration Information 6-10
Displaying EtherChannel Traffic Statistics 6-11
Displaying EtherChannel PAgP Statistics 6-12
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