3Com 5000 ATM manual Power up self-test diagnostics

6-12CHAPTER 6: TROUBLESHOOTING

Verifying ATM OC-3If the Redundant ATM OC-3 card does not become active upon failure Switchover of the primary ATM OC-3, use the following command to verify that

the PHY Automatic Failover parameter is Enabled:

CB5000> show module <slot.phy> verbose

If the PHY_Automatic_Failover parameter is not Enabled, use the following command to enable it:

CB5000> set module <slot>.1 phy_automatic_failover enable

If the ATM Backbone SwitchModule is still experiencing problems after you complete the procedures above, refer to Obtaining Technical Assistance later in this chapter.

Resetting the ATM You can reset the ATM Backbone SwitchModule by either pressing the

Backbonefront panel Reset button or issuing the DMM Reset command.

SwitchModule

CAUTION: If you reset the ATM Backbone SwitchModule using the DMM RESET command, the module does not lose saved setup information. However, performing a reset may cause some of the data being transmitted at that moment to be lost and statistic counters to be reset to zero.

Using the Reset Each ATM Backbone SwitchModule front panel houses a Reset button. Button The Reset button resets the ATM Backbone SwitchModule and executes

power up self-test diagnostics.

CAUTION: Use the Reset button only if you suspect a problem with the

ATM Backbone SwitchModule. Using the Reset button to reset an ATM

Backbone SwitchModule disrupts network traffic.

To ensure that you do not lose any configuration information, before you use the Reset button:

■Save any configuration changes

■Wait at least 30 seconds after saving configuration changes