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DB47
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Joined: Fri May 14, 2021 12:46 pm
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Rx Code Errors + Drops on copper SFP

Fri May 14, 2021 1:36 pm

Hello there,

When I looked after 1 month since reboot into ethernet stats I noticed there is about 100 of Rx drops and Rx Code Errors on SFP interface. I am using router RB962UiGS and SFP S-RJ01 (Mtik) module. SFP is used with FTTB fiber service leading to Juniper and ether1-5 are used for LAN.

I have tried to wash pins by pure ethanol on SFP and RJ45 socket / plug (from ISP). After drying up I reconnected everything and after reboot and 14 days there is still small ammount of Rx Drops and Error Codes as shown on attached stats. Should I be worried about that and if so, what should I do to prevent getting those drops? Should I blame ISP, SFP module or anyhting else? So far I have registred no issues about using internet, webpages load normally, I can reach full advertised speed (500 Mbit/s symetrical) by ISP and I have not noticed sudden ping spikes in FPS games.

FYI: I reboot MikroTik each 1st day in month at 03:00
[main@MikroTik] > /interface ethernet print stats
                      name:           ether1         ether2          ether3        ether4 ether5             sfp
            driver-rx-byte:   22 879 133 509  1 025 362 832   5 440 022 868 2 579 648 638      0 559 694 769 641
          driver-rx-packet:       51 148 278      7 129 925      76 244 023     8 211 744      0     435 834 423
            driver-tx-byte:  188 270 757 473 40 852 402 442 330 474 204 092 7 169 001 567      0  16 734 571 224
          driver-tx-packet:      144 302 366     32 366 412     221 280 536    13 207 917      0     124 425 825
                  rx-bytes:   23 085 878 067  1 060 240 107   5 744 999 742 2 612 569 716      0 553 495 633 470
                 rx-packet:                                                                          435 668 514
              rx-too-short:                0              0               0             0      0               0
                     rx-64:       12 185 941      3 611 296         103 318     2 279 112      0
                 rx-65-127:       21 215 001      2 473 733      75 164 132       295 215      0
                rx-128-255:        2 686 594        527 837         323 984     3 421 126      0
                rx-256-511:        1 110 718        137 442         405 796       756 541      0
               rx-512-1023:        1 125 323        109 006         122 440       606 743      0
              rx-1024-1518:       12 826 421        275 030         124 359       853 057      0
               rx-1519-max:                0              0               0             0      0
               rx-too-long:                0              0               0             0      0               0
              rx-broadcast:           54 208         29 622             530         1 658      0      33 416 230
                  rx-pause:                0              0               0             0      0               0
              rx-multicast:        1 169 318        155 271         253 893        34 483      0       3 129 537
              rx-fcs-error:                0              0               0             0      0               0
            rx-align-error:                0              0               0             0      0               0
               rx-fragment:                0              0               0             0      0               0
               rx-overflow:                0              0               0             0      0
                rx-control:                                                                                    0
             rx-unknown-op:                                                                                    0
           rx-length-error:                                                                                    0
             rx-code-error:                                                                                    8
          rx-carrier-error:                                                                                    0
                 rx-jabber:                                                                                    0
                   rx-drop:                                                                                    8
                  tx-bytes:  188 848 197 691 40 981 861 521 331 359 427 246 7 221 836 985      0  17 246 739 172
                 tx-packet:                                                                          124 411 486
              tx-too-short:                                                                                    0
                     tx-64:        1 347 984      1 225 583         971 102     3 820 963      0
                 tx-65-127:        6 499 752        971 425         866 361       710 201      0
                tx-128-255:        2 499 999        866 563         822 511     2 871 850      0
                tx-256-511:        2 393 720      1 342 036         419 367     1 464 810      0
               tx-512-1023:        2 085 203        404 153         106 552       728 201      0
              tx-1024-1518:      129 475 591     27 556 602     218 094 580     3 611 888      0
               tx-1519-max:                0              0               0             0      0
               tx-too-long:                0              0               0             0      0               0
              tx-broadcast:          270 334        294 919         323 959       322 876      0          28 004
                  tx-pause:                0              0               0             0      0               0
              tx-multicast:          523 466      1 537 071       1 438 267     1 658 860      0               0
               tx-underrun:                0              0               0             0      0
              tx-collision:                0              0               0             0      0
    tx-excessive-collision:                0              0               0             0      0               0
     tx-multiple-collision:                0              0               0             0      0               0
       tx-single-collision:                0              0               0             0      0               0
     tx-excessive-deferred:                0              0               0             0      0               0
               tx-deferred:                0              0               0             0      0               0
         tx-late-collision:                0              0               0             0      0               0
        tx-total-collision:                                                                                    0
                   tx-drop:                                                                                    0
                 tx-jabber:                                                                                    0
              tx-fcs-error:                                                                                    0
                tx-control:                                                                                    0
               tx-fragment:                                                                                    0
                  tx-rx-64:                                                                           54 756 808
              tx-rx-65-127:                                                                          102 472 723
             tx-rx-128-255:                                                                           12 353 273
             tx-rx-256-511:                                                                            6 208 569
            tx-rx-512-1023:                                                                            4 916 881
           tx-rx-1024-1518:                                                                          379 297 429
            tx-rx-1519-max:                                                                                    0

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