Cabletron Systems 04-0053-01 Manual De Usuario

SmartSwitch ATM User Guide   9-3

Troubleshooting

Troubleshooting PNNI Links  

Do devices begin to register with the LES and BUS once multi-point signaling is turned off?

Check whether BUS is connected.

Use 

 to check whether devices are registered with the BUS. If clients are registered, 

check end node configuration. If not registered, check multi-point signaling.

Use 

 to turn off multi-point signaling on a per-ELAN basis. 

Do devices begin to register with the LES and BUS once multi-point signaling is turned off?

Check IISP routes to the switch containing the LES and BUS. 

Are all IISP routes correct? 

Does a new IISP route need to be added so devices can reach the LES and BUS?

If working through these questions does not solve the problem, contact Cabletron Systems Customer 
Service. (see Appendix B, "Technical Support").

9.3

TROUBLESHOOTING PNNI LINKS

You have physically connected another company’s ATM switch with your ATM SmartSwitch. Each switch supports 
PNNI, but there is no connectivity between the two devices. When dealing with PNNI connectivity, two possible 
configurations must be considered:

The ATM SmartSwitch and the other switch are in the same peer group

The ATM SmartSwitch and the other switch are is different peer groups

Use the following procedures to diagnose and resolve PNNI connectivity problems.

9.3.1

Switches in Same Peer Group

Check the physical connection. Make sure that the switches are connected correctly.

Check that both switches are in the same peer group. On the ATM SmartSwitch, enter the 

 command to view the peer group ID. If not the same peer group, perform the following:

Set the peer group ID on either switch to match the other. On the ATM SmartSwitch, use the 

 command to change the peer group ID.

Check the signalling type of each switch. If either switch does not show PNNI as the signaling type 
on the connecting port. Perform the following:

Turn off ILMI and manually set the signaling type to PNNI. On the ATM SmartSwitch, enter 
the 

 command to view signaling type for all ports. If necessary, use the 

 command to turn off ILMI and manually set signaling to 

.

If none of the above actions have corrected the problem, contact Cabletron Systems Customer 
Service (see Appendix B, "Technical Support"). 

9.3.2

Switches in Different Peer Groups

Check the physical connection between the peer groups. Make sure that the switches are connected 
correctly.