3Com 6416SW manual Attached to ATM, Switch/Control Module Installation and Users Guide

Diagnosing	Problems	with	ATM	Ports		Attached to ATM		Devices
After you attach ATM devices						to ATM media ports, the status of				the ports may still not
change	toOKAY	(ready		for	ATM	traffic). To		diagnose this	type of	Phase	3 problem,
follow	these	steps:
1. Use the		SHOW	PORT	VERBOSE		command	(describedONcorein theSwitching
Hub/CELLplex		4000	ATM Command		Reference		Guide) to display		the status	of	each
port.

2. If the status of an SSINOTorINUNISERVICEport: is

Refer to “Diagnosing Problems with ATM Ports” on page 7-15.

Make sure that the attached ATM device is operating properly (for example, the daemon is running).

Check the ATM address registration as described in “Checking ATM Address Registration” on page 7-22.

Perform the the Wrap test as described in the WRAP EXTERNAL command in theONcore Switching Hub/CELLplex 4000 ATM Command Reference GuideIf

the test results show that theKO,porteplacestatustheis module.

3.If the status NOof ACTIVITYa port attached to the port, make

isand if a Turboways* 100Mbps workstation is 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 and re-installing a new one.

4.If the status of OkayUNIPVC-Onlyport , ismake sure that the ATM address of the attached device supports the ATM address registration of the UNI port.

Important:		When a port's statusOkay PVCis -Only, only PVC connections are
supported.
If	the	UNI		port	is	attached	to another hub or	switch, you may prefer to defi
port	as	an	SSI	or	NNI	port, to	be able to establish SVCs.
7-20 ONcore		ATM	Switch/Control			Module: Installation and User's		Guide