Demand test descriptions and error codes - Avaya Support

ATM-TRK (Circuit Emulation Service Circuit Pack)
1. Check the connections between the fiber cable, the ATM-TRK circuit pack, and the
ATM switch.
2. See PKT-BUS (Packet Bus) for test and corrective procedures.
3. Determine what type of fiber is installed between the ATM-TRK circuit pack and the
ATM switch.
If Then
There is multimode fiber Check the length of the fiber. If the cable is
longer than 2 km, it may be causing errors.
There is single-mode fiber or the length of
the multimode fiber is less than 2 km
4. Perform ATM loopback tests on the near-end ATM-TRK circuit pack and on the far-end
circuit pack or ATM switch.
If Then
The ATM-TRK circuit pack fails the
loopback test.
The far-end circuit pack or ATM switch
fails the loopback test.
The equipment at each end of the ATM
span passes the loopback test
The source of the errors can lie in the ATM
facility, the ATM-TRK circuit pack, or the far-end
circuit pack.
The problem is in the ATM-TRK circuit pack.
Replace the circuit pack.
5. Check capacity and peak bandwidth consumption for the ATM span.
If Then
The capacity of the span is inadequate, or
bandwidth consumption is too high.
The problem is in the far-end circuit pack or ATM
switch. Consult the circuit-pack or ATM switch
documentation for advice.
The problem is somewhere in the ATM span. Lack
of bandwidth can be forcing an intermediate ATM
switch to drop cells.
Reduce traffic on the system to ensure that it is
using no more that its subscribed bandwidth.
h. Error Type 771: the ATM switch is sending cells with unknown Virtual Path-Identifier (VPI)
and Virtual Chel-Identifier (VCI) addresses.
1. Make sure that the ATM-TRK circuit-pack address is administered identically on the
ATM switch and the S8700-series system.
i. Error Type 1281: Board major signals error (loss of high-level signal). The far end has
detected a major problem in transmissions originating from the ATM-TRK circuit pack. The
possible Aux Data values for this software counter are listed in Table 55: Error type 1281
Aux Data and repair procedures on page 190.
Issue 5 May 2009 189