Cisco Systems RJ-45-to-AUX manual Etherport Modules, Using the Supervisor Engine, 122

Figure 6.3: The Catalyst Supervisor Engine III G.

∙Gigabit Interface Converter (GBIC) for use with multimode fiber (MMF) or single−mode fiber (SMF) interfaces using SC connectors

∙An MCF5102 processor

Using the Supervisor Engine

If you installed the Supervisor Engine from another switch, it probably has been configured for other interfaces; as a result, the configuration needs to be cleared. To do this, use the clear config command to return the Supervisor Engine to its factory defaults.

You can determine the boot process the switch will use when you recycle the power by setting the boot field in the configuration register. There are three different settings for the boot field. These are as follows:

∙ROM monitor—Use the rommon syntax, which will instruct the switch to remain in ROM−monitor mode.

∙Bootflash—Use the bootflash syntax, which instructs the switch to boot from the first image stored in Flash memory.

∙System—Use the system syntax to instruct the switch to boot from the image specified in the boot environment, which is the default on the switch.

Etherport Modules

One of the most common interfaces found on switches is the Ethernet port. Leaving an Ethernet interface to autonegotiate the speed and duplex of a port should allow any device to connect to it. Many times, however, you must adjust the speed and duplex configuration so the device can talk on the network. A good example of a switch using Ethernet ports is shown in Figure 6.4.

Figure 6.4: The 5000/5500 and the 5002 chassis with installed Ethernet modules.

There are three types of Ethernet interfaces: Ethernet, Fast Ethernet, and Gigabit Ethernet. The same port speed and duplex must be used on both interfaces participating in the point−to−point link. Ethernet and Fast Ethernet ports can autonegotiate the duplex mode, using either half or full duplex. Fast Ethernet interfaces can be set to autonegotiate the port speed. Gigabit Ethernet ports are always full duplex.

To set the port speed on a Fast Ethernet port on a Set/Clear command−based switch, use the following command:

set port speed mod_num/port_num {10100auto}

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