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SergeyPotapov
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Posts: 3
Joined: Fri Jun 19, 2020 2:38 pm

RB4011 rx-drop

Fri Jun 19, 2020 3:28 pm

Hello.
We have some RB4011iGS+ with sfp-sfplus port and notice many strange rx-drops on some ports almost on every device.
RouterOS v 6.43.16 and 6.45.9. Fast Path is enabled. Is anybody catch the same? Will be grateful for any help.
[002.1-mpls-router] > /int ethernet print stats where name=sfp-sfplus1
    driver-tx-packet:      9 697 892 234
            rx-bytes:  6 465 436 053 657
           rx-packet:     10 535 960 495
        rx-too-short:                  0
               rx-64:          2 211 228
           rx-65-127:      2 573 287 079
          rx-128-255:      1 545 341 914
          rx-256-511:        479 052 703
         rx-512-1023:        366 148 891
        rx-1024-1518:      4 811 572 903
         rx-1519-max:        758 667 709
         rx-too-long:                  0
        rx-broadcast:          3 414 951
            rx-pause:                  0
        rx-multicast:          1 448 822
        rx-fcs-error:                  0
      rx-align-error:                  0
         rx-fragment:                  0
     rx-length-error:                  0
           rx-jabber:                  0
             rx-drop:            321 933
            tx-bytes:  6 056 044 382 869
           tx-packet:      9 697 900 591
        tx-broadcast:          6 451 956
            tx-pause:              8 357
        tx-multicast:          2 457 866
and on the ethernet port:

[002.1-mpls-router] > /int ethernet print stats where name=ether7      
                      name:             ether7
            driver-rx-byte:  4 132 058 511 707
          driver-rx-packet:      7 041 340 590
            driver-tx-byte:  8 137 909 524 731
          driver-tx-packet:      8 287 750 453
                  rx-bytes:  4 160 250 401 150
                rx-unicast:      7 040 952 768
              rx-broadcast:              6 113
                  rx-pause:                  0
              rx-multicast:            425 193
              rx-fcs-error:                  0
               rx-fragment:                  0
             rx-unknown-op:                  0
             rx-code-error:                  0
                 rx-jabber:                  0
                   rx-drop:             51 625
                  tx-bytes:  8 171 046 984 592
                tx-unicast:      8 287 522 373
              tx-broadcast:                 21
                  tx-pause:                  0
              tx-multicast:            214 507
              tx-collision:                  0
    tx-excessive-collision:                  0
     tx-multiple-collision:                  0
       tx-single-collision:                  0
               tx-deferred:                  0
         tx-late-collision:                  0
                   tx-drop:                  0
                  tx-rx-64:            723 780
              tx-rx-65-127:      4 722 364 614
             tx-rx-128-255:      2 245 337 849
             tx-rx-256-511:        559 140 458
            tx-rx-512-1023:        398 660 486
           tx-rx-1024-1518:      6 179 178 715

Thanks.
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petr5250
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Joined: Mon Jun 12, 2006 5:06 pm

Re: RB4011 rx-drop

Mon Feb 22, 2021 4:49 pm

We have the same problem. Not only that the rx-drop counters are rising but we can see the impact on the forwarded traffic.
So far we haven't found any solution other than replacing the affected router with another type (e.g. CCR1009).
 
SergeyPotapov
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Posts: 3
Joined: Fri Jun 19, 2020 2:38 pm

Re: RB4011 rx-drop

Wed Feb 24, 2021 11:32 am

... Not only that the rx-drop counters are rising but we can see the impact on the forwarded traffic. ...
What kind of impact you can see? Increase delay? Reduction in bandwidth? We continue use rb4011 and see drop from time to time.

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