IBM ATM OC-3c manual Access the ATM Vlan LEC Status Screen, Is the ATM Switch Using AAL5?

Models: ATM OC-3c

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D-8APPENDIX D: TROUBLESHOOTING

Access the ATM VLAN LEC Status Screen

aFrom the Main Menu select the SWITCH MANAGEMENT option. The Switch Management screen is displayed.

bEnsure that the Port option is selected in the Management Level field.

cEnsure that the ATM port number is entered in the Port ID field.

dSelect the STATS button. The ATM Port Statistics screen is displayed.

eSelect the LEC button to display the ATM VLAN LEC Status screen. An example of the ATM VLAN LEC Status screen is shown in Figure D-5.

Figure D-5ATM VLAN LEC Status Screen

Is the LEC ATM Address Valid for the Default VLAN?

Check that the ATM address in the LEC ATM Address field is valid. For example, if the first part of the address (the network prefix) is all zeros the ATM Switch has not registered the ATM Module’s LEC.

You can confirm that the ATM address of the LEC for the default VLAN is registered by checking the registered address table on the adjacent ATM Switch.

Is the ATM address valid and registered with the ATM Switch?

Yes — go to step 22.

No — go to step 11.

Is the ATM Switch Using AAL5?

It is very unlikely that your network has been configured to use incompatible devices, but to rule out the possibility, check that the ATM Switch uses the AAL5 protocol.

Does the ATM Switch also use AAL5?

Yes — go to step 13.

No — go to step 12.

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IBM ATM OC-3c manual Access the ATM Vlan LEC Status Screen, Is the LEC ATM Address Valid for the Default VLAN?