4-3
Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide
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Release 8.1
78-15486-01
Chapter 4 Configuring Ethernet and Fast Ethernet Switching
Configuring Ethernet and Fast Ethernet Ports
Configuring Ethernet and Fast Ethernet Ports
These sections describe how to configure Ethernet and Fast Ethernet switching ports on the Catalyst
enterprise LAN switches:
•
Setting Ethernet and Fast Ethernet Port Names, page 4-3
•
Setting Ethernet and Fast Ethernet Port Priority Levels, page 4-4
•
Setting Ethernet and Fast Ethernet Port Speeds, page 4-4
•
Setting Ethernet and Fast Ethernet Port Duplex Modes, page 4-5
•
Setting Ethernet and Fast Ethernet Port Debounce Timers, page 4-6
•
Configuring errdisable State Ethernet and Fast Ethernet Port Timeout Periods, page 4-7
•
Checking Ethernet and Fast Ethernet Port Connectivity, page 4-8
Note
For information on configuring Fast EtherChannel, see
Chapter 6, “Configuring Fast EtherChannel and
Gigabit EtherChannel.”
Setting Ethernet and Fast Ethernet Port Names
You can assign names to the ports on Ethernet and Fast Ethernet modules to facilitate switch
administration.
To assign a name to a port, perform this task in privileged mode:
Table 4-1
Ethernet and Fast Ethernet Default Configurations
Feature
Default Value
Port enable state
All ports are enabled
Port name
None
Port priority
Normal
Duplex mode
•
Autonegotiate speed and duplex for 10/100-Mbps Fast
Ethernet ports
•
Autonegotiate duplex for 100-Mbps Fast Ethernet ports
Native VLAN
VLAN 1
Spanning tree port cost
•
Port cost of 100 for 10-Mbps Ethernet ports
•
Port cost of 19 for 10/100-Mbps Fast Ethernet ports
•
Port cost of 19 for 100-Mbps Fast Ethernet ports
Fast EtherChannel
Disabled on all Fast Ethernet ports (auto mode)
Task
Command
Step 1
Assign a name to a port.
set port name mod_num/port_num [name_string]
Step 2
Verify that the port name is configured.
show port [mod_num[/port_num]]
