Rx errors in ifconfig

Question

Hi all I wanted to know how this rx and rx_crc errors impact the network. ifconfig shows out rx erros in lakhs.to be more clear what are the possible issues that is faced by a server when it has constant increase in the number of rx_error.

Naimish Makwana · Answer

rx_errors and rx_crc_errors are types of network errors that can have significant impacts on network performance and reliability. rx_errors : These errors mean that your Network Interface Card (NIC) is receiving malformed frames from the transmitting switchport1. The root cause of this could be a bad cable or a bad interface on either the machine or the switch1. High rx_errors can lead to packet loss which can degrade network performance and disrupt services. rx_crc_errors : Cyclic Redundancy Check (CRC) errors occur when the check value (CRC) that’s calculated at the source and sent with the packet doesn’t match the value calculated at the destination2. CRC errors typically result in frames being dropped3. They can be caused by various factors including network congestion faulty networking hardware or electromagnetic interference2. The impact of these errors can be significant: Data Integrity : CRC errors can cause an end station to freeze4. If a large number of CRC Errors are attributed to a single station on the network it’s recommended to replace the station’s network interface board4. Network Performance : High levels of rx_errors and rx_crc_errors can lead to retransmissions which consume bandwidth and can reduce the overall throughput of the network3. This can be particularly disruptive for time-sensitive applications such as voice and video which can experience high latency and jitter3. Server Performance : On a server a constant increase in the number of rx_errors could indicate a serious network issue. This could lead to service disruptions or degraded performance for applications running on the server5. It’s important to monitor these errors and take corrective action when necessary to maintain optimal network performance. This might involve replacing faulty hardware updating drivers or even redesigning the network architecture for better performance2367451. I hope this helps!

Sam D · Answer

good answer

Mohamed Azarudeen Z · Answer

Hi lokesh. 1. RX errors: RX errors also known as receive errors are a count of the total number of errors that occurred during the reception of packets on a network interface. These errors can indicate various problems such as: - Physical layer issues: RX errors can be caused by problems with the physical network connection such as faulty cables loose connectors or issues with the network switch or router. - Network congestion: High levels of network traffic or congestion can lead to RX errors especially if the server's network interface is overwhelmed with incoming packets. - Misconfiguration or compatibility issues: Incorrect network settings or mismatched configurations between the server and the network infrastructure can result in RX errors. - Hardware or driver problems: Faulty network interface cards (NICs) or outdated drivers can contribute to RX errors. 2. RX_CRC errors: RX_CRC errors specifically refer to Receive Cyclic Redundancy Check errors. The CRC is a checksum value used to ensure the integrity of data packets during transmission. If an RX_CRC error occurs it means that the received packet's CRC value does not match the expected value. This can be an indication of data corruption during transmission. The impact of RX and RX_CRC errors on the network and server can vary depending on the severity and frequency of the errors: - Packet loss: RX errors can result in packet loss which means that some network packets are not successfully received. This can lead to data inconsistency delays or even failures in network-dependent applications and services. - Decreased network performance: If the server constantly experiences RX errors it can lead to reduced network performance due to the retransmission of lost packets and the increased overhead of error handling. - Unstable or intermittent connectivity: RX errors can cause intermittent connectivity issues where the network connection becomes unstable or unreliable. - Increased network troubleshooting: High levels of RX and RX_CRC errors may require troubleshooting efforts to identify and resolve the underlying network issues. This can involve investigating hardware cabling network configurations or driver-related problems. To address the issues related to RX and RX_CRC errors you can perform the following steps: - Verify the physical connections: Check the network cables connectors and network equipment to ensure they are properly connected and in good condition. - Update drivers: Update the network interface card (NIC) drivers to the latest version provided by the manufacturer. - Check network configurations: Verify that the network settings on the server match the recommended configurations and are compatible with the network infrastructure. - Monitor network traffic: Analyze network traffic patterns to identify any sources of congestion or excessive load that may be causing the RX errors. - Perform network diagnostics: Utilize network diagnostic tools to identify and resolve any issues with the network infrastructure. - Consider hardware replacement: If the RX errors persist after performing the above steps it may be necessary to replace the network interface card (NIC) or other faulty hardware components. By addressing RX and RX_CRC errors promptly and resolving the underlying causes you can help ensure a stable and reliable network connection for your server and mitigate potential impacts on network performance and connectivity.