ATM Configuration and Troubleshooting Guide

Troubleshooting
Troubleshooting Classical IP
Chapter 9208
For detailed descriptions of any of the commands described in this
section, see to the command’s man pages.
A Start. Before starting the flowchart, do these things:
Step 1. Use SAM to ensure that the local interface is set up correctly. Ensure
that the type of traffic parameters configured are compatible with those
available at the remote destination system.
Step 2. If you suspect a problem with the hardware or software, refer to
“Troubleshooting the ATM Adapter and Software Installation” on
page 190.
Step 3. If the SVC is from a 622 Mbit/s adapter towards a 155 Mbit/s adapter,
ensure that you have configured an SVC whose peak cell rate is less than
155 Mbits/s.
Step 4. Check that no PVCs exist between a local and remote node (if a PVC
exists, it will disable the SVC mechanism).
Step 5. Check the ATM configuration of the local interface by using this
command:
atmmgr card_inst_num show -c
For example, to display the ATM configuration of ATM adapter atm0, you
would type: atmmgr 0 show -c.
You will get a display like the following:
ATM Cell statistics and statusATM address
:47000580ffe1000000f21c154e.080009c6fc91.00
Maximum number of VCCs : 1979
VCCs in use : 8
0 VPI bits, 11 VCI bits
UNI version : 3.0
Received cells : 2248029122
Dropped received cells : 0
Transmitted cells : 61570485
a. If the ATM address is unknown or invalid, refer to “Checking the
ATM Address Network Prefix” on page 219 or “Checking a Dynamic
Network Prefix (ILMI)” on page 221.