交换机多模850nm直连光衰正常，端口确有Crc

接入到核心经过odf光纤架，两边的光衰都是低于-5dbm,但是接入交换机端口一直有Crc增加，除了光衰还有其他的因素会影响端口crc吗

接入的端口信息如下：

Ten-GigabitEthernet2/0/50 transceiver diagnostic information:
  Current diagnostic parameters:
    Temp.(°C) Voltage(V)  Bias(mA)  RX power(dBm)  TX power(dBm) 
    33         3.31        5.76      -3.22          -2.71         
  Alarm thresholds:
          Temp.(°C) Voltage(V)  Bias(mA)  RX power(dBm)  TX power(dBm) 
    High  81         3.80        16.50     1.00           1.00          
    Low   0          2.81        1.00      -11.90         -10.30 

Ten-GigabitEthernet2/0/50
Current state: DOWN
Line protocol state: DOWN(LAGG)
IP packet frame type: Ethernet II, hardware address: 4873-974c-44df
Description: Ten-GigabitEthernet2/0/50 Interface
Bandwidth: 10000000 kbps
Loopback is not set
Media type is optical fiber, Port hardware type is 10G_BASE_SR_SFP
Unknown-speed mode, unknown-duplex mode
Link speed type is autonegotiation, link duplex type is autonegotiation
Flow-control is not enabled
Maximum frame length: 10240
Allow jumbo frames to pass
Broadcast max-ratio: 100%
Multicast max-ratio: 100%
Unicast max-ratio: 100%
PVID: 1
MDI type: Automdix
Port link-type: Trunk
 VLAN Passing:   3, 21, 28, 109, 114, 911
 VLAN permitted: 3, 21, 28, 109, 114, 911
 Trunk port encapsulation: IEEE 802.1q
Port priority: 0
Last link flapping: 0 hours 0 minutes 1 seconds
Last clearing of counters: Never
Current system time:2022-02-15 12:19:58 Beijing+08:00:00
Last time when physical state changed to up:2022-02-15 12:19:57 Beijing+08:00:00
Last time when physical state changed to down:2022-02-15 12:19:57 Beijing+08:00:00
 Peak input rate: 12156129 bytes/sec, at 2021-12-30 16:52:23
 Peak output rate: 2496038 bytes/sec, at 2022-01-21 12:16:18
 Last 300 seconds input: 0 packets/sec 110 bytes/sec -%
 Last 300 seconds output: 0 packets/sec 202 bytes/sec -%
 Input (total):  212916165 packets, 214370377912 bytes
  178954672 unicasts, 29901560 broadcasts, 4018129 multicasts, 0 pauses
 Input (normal):  212874361 packets, - bytes
  178954672 unicasts, 29901560 broadcasts, 4018129 multicasts, 0 pauses
 Input:  41804 input errors, 0 runts, 0 giants, 0 throttles
  38890 CRC, 0 frame, - overruns, 2914 aborts
  - ignored, - parity errors
 Output (total): 52930081 packets, 21406808563 bytes
  51765183 unicasts, 177040 broadcasts, 987858 multicasts, 0 pauses
 Output (normal): 52930081 packets, - bytes
  51765183 unicasts, 177040 broadcasts, 987858 multicasts, 0 pauses
 Output: 0 output errors, - underruns, - buffer failures
  0 aborts, 0 deferred, 0 collisions, 0 late collisions
  0 lost carrier, - no carrier