由于硬件问题、C3 Tx丢弃和帧超时

适用场景

Brocade Fabric OS 

问题描述

• errdump -a 记录  frame timeout, 、说明哪个端口接收到帧(Rx)以及无法在何处 (TX)传输帧、并记录丢失信号和超额预订警报。

2022/02/09-22:31:04, [AN-1014], 2266, SLOT 2 | FID 128, INFO, switch, Frame timeout detected, tx port 9/7 rx port 9/27, sid c8f907, did 678740, timestamp 2022-02-09 22:31:04 .
2023/12/23-10:47:16 (IST), [MAPS-1003], 274485, SLOT 2 | FID 128 | PORT 11/8, WARNING, switch, IB_INFINI_3185_W_N3P6, F-Port 11/8, Condition=ALL_PORTS(PORT_BANDWIDTH/NONE==OVERSUBSCRIBED), Current Value:[PORT_BANDWIDTH, OVERSUBSCRIBED, (TXQL=914 us, TX=72.8%) ], RuleName=defALL_PORTS_OVERSUBSCRIBED, Dashboard Category=Fabric Performance Impact, Quiet Time=15 min.
2023/12/18-01:35:43 (IST), [MAPS-1003], 270764, SLOT 1 | FID 128 | PORT 10/21, WARNING, switch, U-Port 10/21, Condition=ALL_PORTS(LOSS_SIGNAL/min>5), Current Value:[LOSS_SIGNAL, 8 LOS], RuleName=defALL_PORTSLOSS_SIGNAL_5, Dashboard Category=Port Health, Quiet Time=None.

• frame timeouts 指示这些Tx端口无法将帧转发到指定的Rx端口、因此超时。

 

• IO_FRAME_LOSS  指示  IO_PERF_IMPACT 交换机端errdump 中记录的帧延迟 事件的事件-

2024/12/02-04:56:04 (IST), [MAPS-1001], 1664654, SLOT 2 | FID 128 | PORT 12/8, CRITICAL, switch, slot12 port8, F-Port 12/8, Condition=ALL_PORTS(DEV_LATENCY_IMPACT/NONE==IO_FRAME_LOSS), Current Value:[DEV_LATENCY_IMPACT, IO_FRAME_LOSS, (174 ms Frame Delay in VC: 2) ], RuleName=ALL_PORTS_IO_FRAME_LOSS_UNQUAR, Dashboard Category=Fabric Performance Impact, Quiet Time=1 day.

 

2024/12/02-04:56:04 (IST), [MAPS-1001], 1664654, SLOT 2 | FID 128 | PORT 12/8, CRITICAL, switch, slot12 port8, F-Port 12/8, Condition=ALL_PORTS(DEV_LATENCY_IMPACT/NONE==IO_FRAME_LOSS), Current Value:[DEV_LATENCY_IMPACT, IO_FRAME_LOSS, (174 ms Frame Delay in VC: 2) ], RuleName=ALL_PORTS_IO_FRAME_LOSS_UNQUAR, Dashboard Category=Fabric Performance Impact, Quiet Time=1 day.
2024/12/02-04:56:04 (IST), [MAPS-1003], 1664655, SLOT 2 | FID 128 | PORT 12/45, WARNING, switch, slot12 port45, F-Port 12/45, Condition=ALL_PORTS(DEV_LATENCY_IMPACT/NONE==IO_PERF_IMPACT), Current Value:[DEV_LATENCY_IMPACT, IO_PERF_IMPACT, (39.3% of 10 secs in VC: 3-7) ], RuleName=defALL_PORTS_IO_PERF_IMPACT_UNQUAR_1, Dashboard Category=Fabric Performance Impact, Quiet Time=1 day.

 

• sfpshow 报告建议范围内的Tx和Rx功率。

=============
Slot 12/Port 45:
=============
RX Power:   -2.7   dBm (532.0uW)
TX Power:   -1.5   dBm (711.2 uW)
 

• porterrshow 显示link failures 、link resets 、c3 discards 与 Tx timeouts 相关的错误计数器增量。

/fabos/cliexec/porterrshow:
      frames     enc    crc    crc    too    too    bad    enc   disc   link   loss   loss   frjt   fbsy   c3timeout   pcs    uncor
     tx     rx    in    err    g_eof   shrt   long   eof    out   c3   fail   sync   sig            tx   rx    err    err
391:   45.3g   3.4g   0     0     0     0     0     0     0    43.1k   5     0     5     0     0    43.1k   0     0     2.5k

 

• c3-timeout tx:

o由于超时(特定于平台和端口)而在传输端口丢弃的传输类3帧的数量。
o这表示设备已连接到交换机的问题描述。
 

• sfpshow 表示接收功率低

=============
Port  391:
=============
RX Power:    -8.1    dBm (155.8uW)
TX Power:    -3.0    dBm (500.6 uW)

 

• portshow 表示远程设备重置 链路的次数超过本地端口发送的脱机原值

portshow 391
[...]
Lr_in:             133     Ols_in:       5
Lr_out:            7       Ols_out:      6

 

• 请重点分析最终设备工作负载、如果此工作负载看起来正常、请继续使用解决方案对 连接到报告超时和帧丢失的端口的终端设备执行硬件检查。