ATM Configuration and Troubleshooting Guide

Troubleshooting

Troubleshooting LAN Emulation

Chapter 9 243

• The switch/edge device.

If the problem persists, make a trace (see “Tracing” on page 292) and call

HP.

G Once both the source and destination LECs are “Operational” on the

same ELAN, check that works between the end systems, as described in

“Checking the Status and Conﬁguration of Both Systems” on page 228.

Check that they both have correctly conﬁgured IP interfaces for the

ELAN. See “Checking the Switch/Edge Device” on page 244 and

“Checking Source/Destination ELAN IP I/F Conﬁgurations” on page 234

for details.

Checking the ATM Address Conﬁgurations

To check that the ATM addresses are conﬁgured correctly, follow these

steps:

Step 1. Use elstat -n net_interface -v on each system and check that their ATM

addresses have been discovered/conﬁgured. The ATM of the LEC is

returned in the ﬁrst line of the output; for example:

ATM address:47.0005.80.ffe100.0000.f215.0e6c.0800093d129c.00

If the address has not been conﬁgured, the output is all zeroes; for

example:

ATM address:0000000000000000000000000000000000000000

Step 2. If the ATM address is returned as all zeroes, the ATM address of the

adapter might not be conﬁgured. Run SAM to conﬁgure the adapter’s

ATM address.

Step 3. If ILMI is supported on the switch and the LEC ATM address is returned

as all zeros, either ILMI is not running on the system, or there is a

problem with ILMI between the system and the switch. See “Checking a

Dynamic Network Preﬁx (ILMI)” on page 221 for more details.

Step 4. Check that the LECS ATM address is correct.

For example, you might have conﬁgured the LECS to use the well-known

ATM address instead of a manually assigned address or vice versa.

Step 5. Check that the LES ATM address is correct.