Checking ATM Address Registration
If you suspect that a Phase 3 problem is due to faulty ATM address registration
between a ONcore hub and an attached ATM device, follow these steps:
1. Enter the SHOW PORT command to make sure that the ATM media port is
configured with a UNI interface. If not, enter the SET PORT command and specify
uni for the interface parameter.
2. Make sure that the attached device supports the ATM network prefix used by the
ONcore hub.
To display the network prefix, enter the SHOW DEVICE command and note the
leftmost thirteen bytes of the hub's ATM address. (See Appendix E, “ONcore ATM
Address Formats” on page E-1 for more information.)
Check the ATM network prefix supported by the device. If it is different from the
prefix set for the hub, use the SET DEVICE ATM_ADDRESS command to change
the hub's ATM address so that its network prefix is the same as the network prefix
used by the ATM device. Be sure to reconfigure the ATM address of other ONcore
hubs that are also attached to the hub.
3. Make sure that the device supports ATM address registration. To check whether
the device registered its ATM address, use the command SHOW ATM_ESI. If, for
example, the port on the ATM device is configured as Okay PVC-Only, the device
supports only PVC connections.
4. Make sure that the device is not using a protocol for ATM address registration that
is incompatible with the protocol used by the ONcore hub.
5. Contact your 3Com service representative.
7-22 ONcore ATM Switch/Control Module: Installation and User's Guide
