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  • 1.  Interface Output Drops

    Posted 09-01-2023 09:10

    Can someone help me understand why I am receiving output drops?  All I am finding is mention of 

    Number of packets dropped by the input queue of the I/O Manager ASIC. If the interface is saturated, this number increments once for every packet that is dropped by the ASIC's RED mechanism.

    but nothing  that shows how to fix it. This is a trunk port to an ESXi host with a regular virtual switch. The 2 ports into the host are not aggregated. 

    Physical interface: ge-0/0/47, Enabled, Physical link is Up
      Interface index: 697, SNMP ifIndex: 563, Generation: 192
      Description: ESXIJNU01 Ethernet 1
      Link-level type: Ethernet, MTU: 1514, LAN-PHY mode, Link-mode: Full-duplex, Speed: 1000mbps, BPDU Error: None, Loop Detect PDU Error: None, Ethernet-Switching Error: None, MAC-REWRITE Error: None,
      Loopback: Disabled, Source filtering: Disabled, Flow control: Enabled, Auto-negotiation: Enabled, Remote fault: Online, Media type: Copper, IEEE 802.3az Energy Efficient Ethernet: Disabled,
      Auto-MDIX: Enabled
      Device flags   : Present Running
      Interface flags: SNMP-Traps Internal: 0x4000
      Link flags     : None
      CoS queues     : 12 supported, 12 maximum usable queues
      Hold-times     : Up 0 ms, Down 0 ms
      Current address: f8:c1:16:5e:14:b2, Hardware address: f8:c1:16:5e:14:b2
      Last flapped   : 2023-08-11 18:12:49 UTC (2w5d 07:14 ago)
      Statistics last cleared: Never
      Traffic statistics:
       Input  bytes  :         685120189672              4408456 bps
       Output bytes  :         449558682548               896792 bps
       Input  packets:            810370205                  657 pps
       Output packets:            849494828                  542 pps
       IPv6 transit statistics:
       Input  bytes  :                    0
       Output bytes  :                    0
       Input  packets:                    0
       Output packets:                    0
      Input errors:
        Errors: 0, Drops: 0, Framing errors: 0, Runts: 0, Policed discards: 0, L3 incompletes: 0, L2 channel errors: 0, L2 mismatch timeouts: 0, FIFO errors: 0, Resource errors: 0
      Output errors:
        Carrier transitions: 21, Errors: 0, Drops: 1670543, Collisions: 0, Aged packets: 0, FIFO errors: 0, HS link CRC errors: 0, MTU errors: 0, Resource errors: 0
      Egress queues: 12 supported, 8 in use
      Queue counters:       Queued packets  Transmitted packets      Dropped packets
        0                        750842404            750839060                 3344
        1                                0                    0                    0
        2                                0                    0                    0
        3                           244174               244174                    0
        8                         99972636             98305437              1667199
        9                                0                    0                    0
        10                               0                    0                    0
        11                          100397               100397                    0
      Queue number:         Mapped forwarding classes
        0                   best-effort
        1                   expedited-forwarding
        2                   assured-forwarding
        3                   network-control
        8                   mcast-be
        9                   mcast-ef
        10                  mcast-af
        11                  mcast-nc
      Active alarms  : None
      Active defects : None
      PCS statistics                      Seconds
        Bit errors                             0
        Errored blocks                         0
      Ethernet FEC statistics              Errors
        FEC Corrected Errors                    0
        FEC Uncorrected Errors                  0
        FEC Corrected Errors Rate               0
        FEC Uncorrected Errors Rate             0
      MAC statistics:                      Receive         Transmit
        Total octets                  685120189672     449557292085
        Total packets                    810370205        849487242
        Unicast packets                  809836606        778641342
        Broadcast packets                   169784         14460106
        Multicast packets                   363815         56385794
        CRC/Align errors                         0                0
        FIFO errors                              0                0
        MAC control frames                       0                0
        MAC pause frames                         0                0
        Oversized frames                         0
        Jabber frames                            0
        Fragment frames                          0
        VLAN tagged frames                       0
        Code violations                          0
      PRBS Mode : Disabled
      Autonegotiation information:
        Negotiation status: Complete
        Link partner:
            Link mode: Full-duplex, Flow control: Symmetric/Asymmetric, Remote fault: OK, Link partner Speed: 1000 Mbps
        Local resolution:
            Flow control: Symmetric, Flow control tx: Enabled, Flow control rx: Enabled, Remote fault: Link OK, Local link Speed: 1000 Mbps, Link mode: Full-duplex
      Packet Forwarding Engine configuration:
        Destination slot: 0 (0x00)
      CoS information:
        Direction : Output
        CoS transmit queue               Bandwidth               Buffer Priority   Limit
                                  %            bps     %           usec
        0 best-effort            75      750000000    75              0      low    none
        3 network-control         5       50000000     5              0      low    none
        8 mcast-be               15      150000000    15              0      low    none
        11 mcast-nc               5       50000000     5              0      low    none
      Interface transmit statistics: Disabled
      MACSec statistics:
        Output
            Secure Channel Transmitted
            Protected Packets               : 0
            Encrypted Packets               : 0
            Protected Bytes                 : 0
            Encrypted Bytes                 : 0
         Input
            Secure Channel Received
            Accepted Packets                : 0
            Validated Bytes                 : 0
            Decrypted Bytes                 : 0

      Logical interface ge-0/0/47.0 (Index 603) (SNMP ifIndex 611) (HW Token 48) (Generation 192)
        Flags: Up SNMP-Traps 0x24024000 Encapsulation: Ethernet-Bridge
        Traffic statistics:
         Input  bytes  :              3853216
         Output bytes  :             36447505
         Input  packets:                31859
         Output packets:                72756
        Local statistics:
         Input  bytes  :              3853216
         Output bytes  :             36447505
         Input  packets:                31859
         Output packets:                72756
        Transit statistics:
         Input  bytes  :                    0                    0 bps
         Output bytes  :                    0                    0 bps
         Input  packets:                    0                    0 pps
         Output packets:                    0                    0 pps
        Protocol eth-switch, MTU: 1514, Generation: 273, Route table: 6, Mesh Group: __all_ces__, Next-hop: 1874, vpls-status: up
          Flags: Trunk-Mode

    {master:0}



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    STEVEN BODDY
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