Cisco ASR 920 series Посібник - Сторінка 32

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Connect a Management Ethernet Cable

When using the Ethernet Management port in the default mode (speed-auto and duplex-auto), the port operates

in the auto-MDI/MDI-X mode. The port automatically provides the correct signal connectivity through the

Auto-MDI/MDI-X feature, and senses a crossover or straight-through cable and adapts to it.

However, the Ethernet Management port may be configured to a fixed speed (10, 100, or 1000 Mbps) through

command-line interface (CLI) commands. In such a case, the port is forced to operate in the MDI mode.

When in a fixed-speed configuration and MDI mode, use:

• a crossover cable to connect to an MDI port

• a straight-through cable to connect to an MDI-X port

Install and Remove SFP and SFP+ Modules

The router supports a variety of SFP and SFP+ modules, including optical and Ethernet modules. For

information on how to install and remove SFP and SFP+ modules, see the documentation for the SFP or SFP+

module at:

http://www.cisco.com/en/US/partner/products/hw/modules/ps5455/prod_installation_guides_list.html.

For information about inspecting and cleaning fiber-optic connections, see:

http://www.cisco.com/en/US/partner/tech/tk482/tk876/technologies_white_paper09186a0080254eba.shtml.

Caution

We recommend that you wait for 30 seconds between the removal and insertion of an SFP on an interface

module. We recommend this to allow the transceiver software to initialize and synchronize with the router.

Changing an SFP more quickly could result in transceiver initialization issues that disable the SFP.

Connecting a USB Flash Device

To connect a USB flash device to the Cisco ASR 920 Series Router, insert the memory stick in the USB port

labeled USB MEM. The Flash memory module can be inserted only one way, and can be inserted or removed

regardless of whether the router is powered up or not.

The figure below shows the USB port connector on the Cisco ASR 920 Series Router.

Figure 25: Cisco ASR 920 Series Router Flash Token Memory Stick

Removing a USB Flash Device

To remove and replace a USB flash token memory stick from and into a Cisco ASR 920 Series Router, follow

these steps:

Installing the Cisco ASR 920 Series Router