Setting Speed And Duplex Parameters; Configuring Flow Control On Gigabit Ethernet Ports - Cisco WS-C2955T-12 Software Manual

Chapter 7 Configuring the Switch Ports
you use the full duplex with flow control option on a 100-Mbps port, the switch port responds to the
pause-control frames sent from the attached device. The switch holds subsequent transmissions in the
port queue for the time specified in the pause-control frame. When no more pause-control frames are
received, or when time specified in the pause-control frame has passed, the switch again sends frames
through the port.

Setting Speed and Duplex Parameters

Note The Ethernet link settings on the CPE Ethernet ports have special considerations and different default
settings from the 10/100 ports. For this information, see the
page
Beginning in privileged EXEC mode, follow these steps to set the speed and duplex parameters on a
10/100 port:
Command
Step 1
configure terminal
Step 2 interface interface
Step 3
speed {10 | 100 | auto}
Step 4
duplex {full | half | auto}
Step 5
end
Step 6 show running-config
Step 7 copy running-config startup-config (Optional) Save your entry in the configuration file. This retains the

Configuring Flow Control on Gigabit Ethernet Ports

Beginning in privileged EXEC mode, follow these steps to configure flow control on a Gigabit Ethernet
port:
Command
Step 1
configure terminal
Step 2
interface interface
Step 3 flowcontrol [asymmetric |
symmetric]
Step 4 end
Step 5
show running-config
Step 6
copy running-config startup-config (Optional) Save your entry in the configuration file. This retains the
78-6511-08
7-16.
Purpose
Enter global configuration mode.
Enter interface configuration mode, and enter the port to be configured.
Enter the speed parameter for the port.
You cannot enter the speed on Gigabit Ethernet or ATM ports.
Enter the duplex parameter for the port.
Return to privileged EXEC mode.
Verify your entries.
configuration when the switch restarts.
Purpose
Enter global configuration mode.
Enter interface configuration mode, and enter the port to be configured.
Configure flow control for the port.
Return to privileged EXEC mode.
Verify your entries.
configuration when the switch restarts.
Catalyst 2900 Series XL and Catalyst 3500 Series XL Software Configuration Guide
Changing the Port Speed and Duplex Mode
"Configuring the LRE Ports" section on
7-3