Cisco IE-3000-8TC Software Configuration Guide - Page 302

Configuring Ethernet Interfaces Chapter 13 Configuring Interface Characteristics Command Step 3 media-type {auto-select | rj45 | sfp} Step 4 Step 5 Step 6 end show interfaces interface-id transceiver properties copy running-config startup-config Purpose Select the interface and type of a dual-purpose uplink port. The keywords have these meanings: • auto-select-The switch dynamically selects the type. When link up is achieved, the switch disables the other type until the active link goes down. When the active link goes down, the switch enables both types until one of them links up. In auto-select mode, the switch configures both types with autonegotiation of speed and duplex (the default). Depending on the type of installed SFP module, the switch might not be able to dynamically select it. For more information, see the information that follows this procedure. • rj45-The switch disables the SFP module interface. If you connect an SFP module to this port, it cannot attain a link even if the RJ-45 side is down or is not connected. In this mode, the dual-purpose port behaves like a 10/100/1000BASE-TX interface. You can configure the speed and duplex settings consistent with this interface type. • sfp-The switch disables the RJ-45 interface. If you connect a cable to the RJ-45 port, it cannot attain a link even if the SFP module side is down or if the SFP module is not present. Based on the type of installed SFP module, you can configure the speed and duplex settings consistent with this interface type. For information about setting the speed and duplex, see the "Speed and Duplex Configuration Guidelines" section on page 13-13. Return to privileged EXEC mode. Verify your setting. (Optional) Save your entries in the configuration file. To return to the default setting, use the media-type auto interface or the no media-type interface configuration commands. e switch configures both types to autonegotiate speed and duplex (the default). If you configure auto-select, you cannot configure the speed and duplex interface configuration commands. When the switch powers on or when you enable a dual-purpose uplink port through the shutdown and the no shutdown interface configuration commands, the switch gives preference to the SFP module interface. In all other situations, the switch selects the active link based on which type first links up. The switch operates with 100BASE-x (where -x is -BX, -FX-FE, -LX) SFP modules as follows: • When the 100BASE -x SFP module is inserted into the module slot and there is no link on the RJ-45 side, the switch disables the RJ-45 interface and selects the SFP module interface. This is the behavior even if there is no cable connected and if there is no link on the SFP module side. • When the 100BASE-x SFP module is inserted and there is a link on the RJ-45 side, the switch continues with that link. If the link goes down, the switch disables the RJ-45 side and selects the SFP module interface. • When the 100BASE-x SFP module is removed, the switch again dynamically selects the type (auto-select) and re-enables the RJ-45 side. 13-12 Cisco IE 3000 Switch Software Configuration Guide OL-13018-03