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LPUF21 board reset for has no loop heartbeat dev0

Publication Date:  2014-06-11 Views:  35 Downloads:  0
Issue Description

At 23:32:08, on Jun 20, 2012, the LPU in slot 6 reset due to heartbeat message loss on chip 588 at the HUAWEI site, as shown in the following information marked in red.

 Jun 20 2012 23:32:08 HUAWEI %%01SRM/3/LPURESET(l):LPU6 reset, the reason is LPU has no loop heartbeat dev0 (Ingress PES Channel 0).

Handling Process

View the diagnostic log generated when heartbeat messages were lost. The diagnostic log shows that an exception occurs. As the heartbeat messages are forwarded based on FIB entries. After receiving the heartbeat messages, chip 588 will search the table for an index. With the  result , the 588 chip knows what is the forwarding destination board and port  for the heart message.

The STD had record the information that the chip 588 fails to find a matching entry as well as the dblg recordwhich indicates that chip 588 find an incorrect index entry.

[#307, TASK 77(DIAG), 2012/06/20 23:32:01.272]

Line 3149 OverTime when checking the bit of PE_CAM_RSLT_VALID_ADDR for sending command of read File pes_ipv4_others.c Line 2909        Lookup failed.

Line 3149 OverTime when checking the bit of PE_CAM_RSLT_VALID_ADDR for sending command of read File pes_ipv4_others.c Line 2909        Lookup failed.

Line 3149 OverTime when checking the bit of PE_CAM_RSLT_VALID_ADDR for sending command of read File pes_ipv4_others.c Line 2909        Lookup failed.

Line 3149 OverTime when checking the bit of PE_CAM_RSLT_VALID_ADDR for sending command of read File pes_ipv4_others.c Line 2909        Lookup failed.

 

%2012-Jun-20 23:32:01.330.1 HUAWEI 01L3ADA/4/TCAMCHECKERR(D):-Slot=6; There is error entry in TCAM. (TableType=1, VrfIndex=0, IpAddr=A.A.A.0, VlanId=0)

%2012-Jun-20 23:32:01.330.2 HUAWEI 01L3ADA/4/TCAMCHECKERR(D):-Slot=6; There is error entry in TCAM. (TableType=1, VrfIndex=0, IpAddr=B.B.117.0, VlanId=0)

It is suspected that a hardware error occurs on the TCAM components, causing an incorrect entry,which lead to the lose of heartbeat and resetting of the board.

Root Cause

There was a hardware error occurs on the TCAM components, causing an incorrect entry,which lead to the lose of heartbeat and resetting of the board..

Solution

change the LPU in slot 6 with a spare part. and send this fault board to Huawei R&D for deep analyzing.

Suggestions
NA

END