Configuring The Native Gigabit Ethernet Interfaces - Cisco CISCO7201 Installation And Configuration Manual

Chapter 3 Starting and Configuring the Router
If you choose not to save your configuration, go directly into the router command structure by choosing
Step 11
0, or choose one from the menu to go back to the start of the setup menu. See the following output for
options 0, 1, and 2. Choose option 2 to save your settings to NVRAM. (See the
Configuration Settings" section on page
NVRAM" section on page
router using configuration mode and the setup facility, your configuration will be lost the next time you
reload the router.
[0] Go to the IOS command prompt without saving this config.
[1] Return back to the setup without saving this config.
[2] Save this configuration to nvram and exit.
Enter your selection [2]: 2
media-type 100BaseX
Building configuration...
Use the enabled mode 'configure' command to modify this configuration.
Press RETURN to get started!

Configuring the Native Gigabit Ethernet Interfaces

The Cisco 7201 router reports the Gigabit Ethernet SFP ports as GigabitEthernet 0/0, GigabitEthernet
0/1, GigabitEthernet 0/2, and GigabitEthernet 0/3. The Cisco 7201 router reports the RJ-45 ports as
GigabitEthernet 0/0 and Gigabit Ethernet 0/1. Before configuring either the GigabitEthernet 0/0 or
Gigabit Ethernet 0/1 interfaces, you must first use the media-type interface command to select the media
type, sfp or rj45.
Changing the Media Type
To be able to use a particular media type, use Cisco IOS to select the media type. This is done by using
the media-type interface command:
media-type { sfp | rj45 }
Example:
interface GigabitEthernet 0/0
media-type rj45
end
Configuring the Interface Transmission and Speed Modes
After changing the media type, configure the speed and duplex transmission modes to appropriately
match the new interface characteristics. Changing the speed and duplex of a Cisco 7201 router Gigabit
Ethernet interface is done using the speed and duplex interface commands.
Table 3-3
Media Type
SFP
RJ-45
1. GE 0/3 only supports full duplex mode.
OL-11364-04
3-21, and then the
3-21.) If you do not save the configuration settings that you created in the
Supported Speed and Duplex Settings
Speed
1000, auto
10, 100, 1000, auto
Configuring a Cisco 7201 Router
"Saving the Running Configuration to
Duplex
full, half, auto
full, half, auto
Cisco 7201 Installation and Configuration Guide
"Checking the Running
1
3-15