3Com 6416SW Installation And User Manual

Diagnosing Problems with ATM Ports Attached to ATM DevicesAfter you attach ATM devices to ATM media ports, the status of the ports may still notchange to OKAY (ready for ATM traffic). To diagnose this type of Phase 3 problem,follow these steps:1. Use the SHOW PORT VERBOSE command (described in theONcore SwitchingHub/CELLplex 4000 ATM Command Reference Guide) to display the status of eachport.2. If the status of an SSI or UNI port is NOT IN SERVICE:Refer to “Diagnosing Problems with ATM Ports” on page 7-15.Make sure that the attached ATM device is operating properly (for example, thedaemon is running).Check the ATM address registration as described in “Checking ATM AddressRegistration” on page 7-22.Perform the the Wrap test as described in the WRAP EXTERNAL command intheONcore Switching Hub/CELLplex 4000 ATM Command Reference Guide Ifthe test results show that the port status is KO, replace the module.3. If the status of a port is NO ACTIVITY and if a Turboways* 100Mbps workstation isattached to the port, make sure that the device is correctly installed:Refer to “Diagnosing Problems with ATM Ports” on page 7-15.Make sure that the adapter is securely plugged into the port.Make sure that the cable is securely plugged into the adapter.Make sure that the device driver is correctly installed by de-installing it andre-installing a new one.4. If the status of a UNI port is Okay PVC-Only, make sure that the ATM address of theattached device supports the ATM address registration of the UNI port.Important: When a port's status is Okay PVC-Only, only PVC connections aresupported.If the UNI port is attached to another hub or switch, you may prefer to define theport as an SSI or NNI port, to be able to establish SVCs.7-20 ONcore ATM Switch/Control Module: Installation and User's Guide