HighIPv6DroppedPackets #

IPv6 dropped packets (up or down) for user {{ $labels.vbng_userName }} (index: {{ $labels.vbng_userIndex }}) exceed 100 for more than 5 minutes (current value: {{ $value }}). This may indicate network issues.

alert: HighIPv6DroppedPackets
annotations:
  description: 'IPv6 dropped packets (up or down) for user {{ $labels.vbng_userName
    }} (index: {{ $labels.vbng_userIndex }}) exceed 100 for more than 5 minutes (current
    value: {{ $value }}). This may indicate network issues.'
  runbook: https://srerun.github.io/prometheus-alerts/runbooks/netelastic/highipv6droppedpackets/
  summary: High IPv6 dropped packets
expr: vbng_ipv6_down_dropped_packets > 100 or vbng_ipv6_up_dropped_packets > 100
for: 5m
labels:
  severity: warning

Here is the runbook for the HighIPv6DroppedPackets alert:

Meaning #

The HighIPv6DroppedPackets alert indicates that the number of IPv6 packets dropped on the user’s connection (either upstream or downstream) has exceeded 100 packets for more than 5 minutes. This may indicate network issues that need to be investigated and resolved.

Impact #

The impact of this alert is that the user may experience poor network performance, including slow data transfer rates, packet loss, and connectivity issues. This can lead to a poor user experience and may affect the user’s ability to use critical applications.

Diagnosis #

To diagnose the root cause of this issue, follow these steps:

• Check the user’s network configuration to ensure that it is properly configured for IPv6.
• Verify that there are no issues with the user’s equipment or cables that could be causing packet loss.
• Check the network traffic and packet capture data to identify the source of the dropped packets.
• Investigate potential network congestion or bottleneck issues.
• Check the system logs for any error messages related to network connectivity or packet processing.

Mitigation #

To mitigate the HighIPv6DroppedPackets alert, follow these steps:

• Check the user’s network configuration and make any necessary adjustments to ensure that it is properly configured for IPv6.
• Work with the user to troubleshoot and resolve any issues with their equipment or cables.
• Implement Quality of Service (QoS) policies to prioritize critical applications and reduce network congestion.
• Increase the buffer size or adjust the packet processing configuration to reduce packet loss.
• Consider implementing traffic shaping or policing to prevent network congestion.
• If the issue persists, consider escalating the issue to the network operations team for further investigation and resolution.