Tx errors only on transmit side

[vulkanmu]

I have a OS6900-X24C2 that is having an issue with multiple interfaces getting Tx errors reporting lost frames. Below is one example, this is a dual SX multimode link to a OS6450-U24. Both interfaces are in a linkagg. I have already tried swapping the optics and the fiber. Any help would be appreciated, thanks!

This is the OS6900-X24C2

Code: Select all

Chassis/Slot/Port          : 1/1/5  
 Operational Status        : up,
 Port-Down/Violation Reason: None,
 Last Time Link Changed    : Fri Mar  8 13:27:41 2024,
 Number of Status Change   : 11,
 Type                      : Ethernet,
 SFP/XFP                   : GBIC_SX,
 Interface Type            : Fiber,
 EPP                       : Disabled,
 Link-Quality              : N/A,
 MAC address               : 78:24:59:1f:c0:4e,
 BandWidth (Megabits)      :     1000,  		Duplex           : Full,
 Autonegotiation           :   0  [                              ],
 Long Frame Size(Bytes)    : 9216,
 Inter Frame Gap(Bytes)    : 12,
 loopback mode             : N/A,
 Rx              :
 Bytes Received  :            124424407, Unicast Frames :               355707,
 Broadcast Frames:                    0, M-cast Frames  :                 2381,
 UnderSize Frames:                    0, OverSize Frames:                    0,
 Lost Frames     :                    0, Error Frames   :                    0,
 CRC Error Frames:                    0, Alignments Err :                    0,
 Tx              :
 Bytes Xmitted   :            849239290, Unicast Frames :               827972,
 Broadcast Frames:                    0, M-cast Frames  :                 2531,
 UnderSize Frames:                    0, OverSize Frames:                    0,
 Lost Frames     :                 1590, Collided Frames:                    0,
 Error Frames    :                    0, Collisions     :                    0,
 Late collisions :                    0, Exc-Collisions :                    0

Code: Select all

Chassis/Slot/Port          : 1/1/6  
 Operational Status        : up,
 Port-Down/Violation Reason: None,
 Last Time Link Changed    : Thu Mar  7 10:26:43 2024,
 Number of Status Change   : 13,
 Type                      : Ethernet,
 SFP/XFP                   : GBIC_SX,
 Interface Type            : Fiber,
 EPP                       : Disabled,
 Link-Quality              : N/A,
 MAC address               : 78:24:59:1f:c0:4f,
 BandWidth (Megabits)      :     1000,  		Duplex           : Full,
 Autonegotiation           :   0  [                              ],
 Long Frame Size(Bytes)    : 9216,
 Inter Frame Gap(Bytes)    : 12,
 loopback mode             : N/A,
 Rx              :
 Bytes Received  :            586295454, Unicast Frames :              1047773,
 Broadcast Frames:                10700, M-cast Frames  :                 8061,
 UnderSize Frames:                    0, OverSize Frames:                    0,
 Lost Frames     :                    0, Error Frames   :                    0,
 CRC Error Frames:                    0, Alignments Err :                    0,
 Tx              :
 Bytes Xmitted   :           2467951989, Unicast Frames :              2558770,
 Broadcast Frames:                47778, M-cast Frames  :                23529,
 UnderSize Frames:                    0, OverSize Frames:                    0,
 Lost Frames     :                 1463, Collided Frames:                    0,
 Error Frames    :                    0, Collisions     :                    0,
 Late collisions :                    0, Exc-Collisions :                    0

These two are on the OS6450-U24

Code: Select all

 Slot/Port  1/25 :
  Operational Status     : up, ""
  Last Time Link Changed : FRI MAR 08 13:27:41 ,
  Number of Status Change: 4,
  Type                   : Ethernet,
  SFP/SFP+/XFP           : GBIC_SX,
  MAC address            : e8:e7:32:c6:e2:d8,
  BandWidth (Megabits)   :     1000,  		Duplex           : Full,
  Autonegotiation        :   0  [                              ],
  Long Frame Size(Bytes) : 9216,
  Rx              :
  Bytes Received  :        3534766448130, Unicast Frames :           3029714391,
  Broadcast Frames:            190328335, M-cast Frames  :             71280155,
  UnderSize Frames:                    0, OverSize Frames:                    0,
  Lost Frames     :                    0, Error Frames   :                    0,
  CRC Error Frames:                    0, Alignments Err :                    0,
  Tx              :
  Bytes Xmitted   :         710956576178, Unicast Frames :           1425742315,
  Broadcast Frames:             37937499, M-cast Frames  :             22294783,
  UnderSize Frames:                    0, OverSize Frames:                    0,
  Lost Frames     :                    0, Collided Frames:                    0,
  Error Frames    :                    0

Code: Select all

 Slot/Port  1/26 :
  Operational Status     : up, ""
  Last Time Link Changed : THU MAR 07 10:26:44 ,
  Number of Status Change: 7,
  Type                   : Ethernet,
  SFP/SFP+/XFP           : GBIC_SX,
  MAC address            : e8:e7:32:c6:e2:d9,
  BandWidth (Megabits)   :     1000,  		Duplex           : Full,
  Autonegotiation        :   0  [                              ],
  Long Frame Size(Bytes) : 9216,
  Rx              :
  Bytes Received  :        2862416476814, Unicast Frames :           2557119118,
  Broadcast Frames:                87490, M-cast Frames  :              8682011,
  UnderSize Frames:                    0, OverSize Frames:                    0,
  Lost Frames     :                    0, Error Frames   :                    0,
  CRC Error Frames:                    0, Alignments Err :                    0,
  Tx              :
  Bytes Xmitted   :         814452767631, Unicast Frames :           1536865080,
  Broadcast Frames:                19251, M-cast Frames  :              8147700,
  UnderSize Frames:                    0, OverSize Frames:                    0,
  Lost Frames     :                    0, Collided Frames:                    0,
  Error Frames    :                    0

[Gleylancer]

The most probable cause for this is a Buffer Overflow or a Network Congestion.

[vulkanmu]

How would I go about determining which is the issue? Are there certain commands I can use to check either of those things?