Cisco WS-C3560X-48PF-L Hardware Installation Guide - Page 85

Autonegotiation and Network Interface Cards, Cabling Distance

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Chapter 4 Troubleshooting Resetting the Switch to the Factory Default Settings Autonegotiation and Network Interface Cards Problems sometimes occur between the switch and third-party network interface cards (NICs). By default, the switch ports and interfaces autonegotiate.Laptops or other devices are commonly set to autonegotiate, yet sometimes issues occur. To troubleshoot autonegotiation problems, try manually setting both sides of the connection. If this does not solve the problem, there could be a problem with the firmware or software on the NIC. You can resolve this by upgrading the NIC driver to the latest version. Cabling Distance If the port statistics show excessive FCS, late-collision, or alignment errors, verify that the cable distance from the switch to the connected device meets the recommended guidelines. See the "Cable and Adapter Specifications" section on page B-5. Resetting the Switch to the Factory Default Settings If you have configured a new switch with a wrong IP address, or if all of the switch LEDs start blinking when you try to enter Express Setup mode, you can clear the IP address that is configured on the switch. Note Resetting the switch deletes the configuration and reboots the switch. To reset the switch: 1. Press and hold the Mode button (Figure 1-2 on page 1-4). The switch LEDs begin blinking after about 2 seconds. If the LEDs above the mode button turn solid green, you can release the Mode button and run Express Setup to configure the switch. If the LEDs do not turn solid green, continue with the next step. 2. Continue holding down the Mode button. The LEDs stop blinking after an additional 8 seconds, and then the switch reboots. The switch now behaves like an unconfigured switch. You can configure the switch by using Express Setup as described in the switch getting started guide on Cisco.com. You can also configure the switch by using the CLI setup procedure. See Appendix C, "Configuring the Switch with the CLI-Based Setup Program." OL-19593-02 Catalyst 3750-X and 3560-X Switch Hardware Installation Guide 4-5

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4-5
Catalyst 3750-X and 3560-X Switch Hardware Installation Guide
OL-19593-02
Chapter 4
Troubleshooting
Resetting the Switch to the Factory Default Settings
Autonegotiation and Network Interface Cards
Problems sometimes occur between the switch and third-party network interface cards (NICs). By
default, the switch ports and interfaces autonegotiate.Laptops or other devices are commonly set to
autonegotiate, yet sometimes issues occur.
To troubleshoot autonegotiation problems, try manually setting both sides of the connection. If this does
not solve the problem, there could be a problem with the firmware or software on the NIC. You can
resolve this by upgrading the NIC driver to the latest version.
Cabling Distance
If the port statistics show excessive FCS, late-collision, or alignment errors, verify that the cable distance
from the switch to the connected device meets the recommended guidelines. See the
“Cable and Adapter
Specifications” section on page B-5
.
Resetting the Switch to the Factory Default Settings
If you have configured a new switch with a wrong IP address, or if all of the switch LEDs start blinking
when you try to enter Express Setup mode, you can clear the IP address that is configured on the switch.
Note
Resetting the switch deletes the configuration and reboots the switch.
To reset the switch:
1.
Press and hold the Mode button (
Figure 1-2 on page 1-4
).
The switch LEDs begin blinking after about 2 seconds. If the LEDs above the mode button turn solid
green, you can release the Mode button and run Express Setup to configure the switch. If the LEDs
do not turn solid green, continue with the next step.
2.
Continue holding down the Mode button. The LEDs stop blinking after an additional 8 seconds, and
then the switch reboots.
The switch now behaves like an unconfigured switch. You can configure the switch by using Express
Setup as described in the switch getting started guide on Cisco.com.
You can also configure the switch by using the CLI setup procedure. See
Appendix C, “Configuring the
Switch with the CLI-Based Setup Program.”