
Table
State | Possible Causes | Possible Solutions |
Duplicated ATM | The LES has received a | Ensure that ATM |
Address | request from a LEC | addresses are unique. |
| which contains an ATM | Check the LES |
A source ATM | address already | database for duplicate |
address duplicates a | registered to another | addresses. |
previously | LEC on the same ELAN. |
|
registered ATM |
|
|
address. | For example, if a LES is |
|
| faulty, when a LEC |
|
| disconnects from the |
|
| LES, the LES might fail |
|
| to register the change. |
|
| When the LEC tries to |
|
| rejoin the LES, the LES |
|
| still has that LEC’s ATM |
|
| address in its database, |
|
| and thinks that two |
|
| devices have the same |
|
| ATM address. |
|
| You may have |
|
| accidentally entered |
|
| the same ATM |
|
| addresses twice. |
|
(continued) |
|
|
| Identifying the Problem | ||
Table |
|
| |
State | Possible Causes | Possible Solutions | |
Insufficient | Too many connections | You may wish to |
|
Resources | have been requested | consider extending or | |
| and the tables used by | restructuring your | |
There are | the LES may be full, | network. |
|
insufficient | and the connection |
|
|
resources to grant a | cannot be set up. |
|
|
request. |
| Use a separate ATM | |
| The ATM Switch is busy | ||
| and cannot provide | Switch for LECS |
|
| LECS functionality. | functionality. |
|
| There is a mismatch | Make the MAX VPI/VCI | |
| between the VPI/VCI | Bits compatible. |
|
| range supported by |
|
|
| adjacent ATM devices. |
|
|
| Example: |
|
|
| If Switch A supports |
|
|
| VPI/VCI values 7:511 |
|
|
| and Switch B only |
|
|
| supports values up to |
|
|
| 7:255, when Signalling |
|
|
| tries to set up a |
|
|
| connection using the |
|
|
| VPI/VCI value 7:256, |
|
|
| Switch B rejects the |
|
|
| connection. |
|
|
Access Denied | The LEC is trying to join | Check your LANE |
|
| an ELAN that it is not | Services setup. |
|
The LES has denied | allowed to access. |
|
|
the LEC access to |
|
|
|
the ELAN for security reasons.
(continued)