6-8CHAPTER 6: TROUBLESHOOTING

3Use the following command to check the following SONET status indicators:

CB5000> show sonet <slot.phy_num> status

Verify that the display lists status is OK for the following indicators:

Line Current Status

Section Current Status

Path Current Status

4Record any indications that are not as expected and proceed to Verifying ATM Signalling Functions.

Verifying ATM Use the following procedure to verify ATM signaling functions:

Signaling Functions

1Use the following command to check the UNI Version setting of your ATM Backbone SwitchModule:

CB5000> show atm <slot> interface

Examine the setting of the UNI Version parameter of the ATM Backbone SwitchModule. It must match the ATM switch setting to which it is connected. The valid settings are:

3_0

3_1

Contact your network supplier for the UNI version setting of the ATM switch.

2If necessary, reset the UNI Version parameter and corresponding ATM signalling times using the following command:

CB5000> set atm <slot> uni_version 3_1

(or 3_0)

3If you made any changes in Step 2, reset the module using the following command:

CB5000> reset module <slot>

ATM commands do not take effect until you reset the module. Use the DMM RESET MODULE command to enable any ATM parameter changes.

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3Com 5000 ATM manual Signaling Functions, CB5000 show atm slot interface, CB5000 set atm slot universion