Step 4
Grasp the SFP module between your thumb and index finger, and carefully remove it from the module slot.
Step 5
For fiber-optic SFP modules, insert a dust plug into the optical ports of the SFP module to keep the optical interfaces
clean.
Step 6
Place the removed SFP module in an antistatic bag or other protective environment.
Connecting to the 10/100/1000 Ports
The router 10/100/1000 ports configure themselves to operate at the speed of attached devices. If the
attached ports do not support autonegotiation, you can explicitly set the speed and duplex parameters.
Connecting devices that do not autonegotiate or that have their speed and duplex parameters manually set
can reduce performance or result in no linkage.
Note
To maximize performance, choose one of these methods for configuring the Ethernet ports:
•
Let the ports autonegotiate both speed and duplex.
•
Set the port speed and duplex parameters on both ends of the connection.
SUMMARY STEPS
1.
When connecting to workstations, servers, and routers, connect a straight-through cable to an RJ-45
connector on the front panel.When connecting to routers or repeaters, use a crossover cable.
2.
Connect the other end of the cable to an RJ-45 connector on the other device. The port LED turns on when
both the router and the connected device have established link.
3.
Reconfigure and reboot the connected device, if necessary.
4.
Repeat Steps 1 through 3 to connect each device.
DETAILED STEPS
Step 1
When connecting to workstations, servers, and routers, connect a straight-through cable to an RJ-45 connector on the
front panel.When connecting to routers or repeaters, use a crossover cable.
You can use the
mdix auto
interface configuration command in the CLI to enable the automatic
medium-dependent interface crossover (auto-MDIX) feature. When the auto-MDIX feature is enabled, the router
detects the required cable type for copper Ethernet connections and configures the interfaces accordingly.
Therefore, you can use either a crossover or a straight-through cable for connections to a copper 10/100/1000,
or an SFP module port on the router, regardless of the type of device on the other end of the connection.
Note
Step 2
Connect the other end of the cable to an RJ-45 connector on the other device. The port LED turns on when both the
router and the connected device have established link.
If the port LED does not turn on, the device at the other end might not be turned on, or there might be a cable problem
or a problem with the adapter installed in the attached device.
On user network interface (UNI) ports, the port LED is green after the link is established.
Note
Cisco ASR-920-24SZ-IM, ASR-920-24SZ-M, ASR-920-24TZ-M Aggregation Services Router Hardware Installation
Guide
96
Installing the Router
Connecting to the 10/100/1000 Ports
