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Cisco Bug: CSCtc12747 - Bridge can corrupt pkt on egress to NPU

Last Modified

Jan 14, 2017

Products (1)

  • Cisco ASR 9000 Series Aggregation Services Routers

Known Affected Releases

3.9.0.BASE 3.9.1.BASE

Description (partial)


   1 pkt loss is normally observed in a given stream, for a given duration.

The NPU counter EBDMA and  NPU fabric counter xaui_a_r_fcs_error_frames_cnt
are non-zero.

Total Pkt loss observed:
 1 pkts lost. (out of 735097536 switched through system.)

 Pkt loss is due to EBDMA drop on NP#0 of LC#6.

Offset  Counter                                            CounterValue^M
524160  EBDMA Discard stats counters 0                             1           0^M

...... NPU fabric ingress counters...

                Node: 0/6/CPU0:^M
Ingress fabric-to-bridge counters for NP 0^M
 xaui_a_r_64_frame_cnt                                        0^M
 xaui_a_r_65_to_127_frame_cnt                                 1^M
 xaui_a_r_128_to_255_frame_cnt                                3^M
 xaui_a_r_256_to_511_frame_cnt                                4^M
 xaui_a_r_512_to_1023_frame_cnt                               3^M
 xaui_a_r_1024_to_1518_frame_cnt                              1^M
 xaui_a_r_1519_to_1522_vlan_frame_cnt                         0^M
 xaui_a_r_received_bytes_low_cnt                     2689011652^M
 xaui_a_r_received_bytes_high_cnt                             0^M
 xaui_a_r_received_packets_cnt                         91887199^M
 xaui_a_r_multicast_packets_cnt                               0^M
 xaui_a_r_broadcast_packets_cnt                               0^M
 xaui_a_r_control_frames_cnt                                  0^M
 xaui_a_r_pause_control_frames_cnt                            0^M
 xaui_a_r_fcs_error_frames_cnt                                1^M
 xaui_a_r_frame_length_error_cnt                              0^M
 xaui_a_r_code_error_cnt                                      0^M


   The conditions at which this condition asserts itself, is not deterministic.
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