• CloudVision Event Guide

 
 
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Overview

This article identifies some of the common CloudVision Events and provides information regarding the events themselves or references to troubleshoot the underlying cause of the events.

CVP Events

BUGALERTS_CVE_EXPOSED

Explanation: CVP detected a potential CVE on the switches. For more information, please visit https://www.arista.com/en/support/advisories-notices.

CONNECTIVITY_MONITOR_ANOMALY

Explanation: The cloudtracer latency anomaly event monitors the latency metric between devices and configured hosts. CVP detected a deviation in these metrics from the historical bounds. For more information, please visit https://eos.arista.com/toi/cvp-2020-1-0/events/#CloudTracer_Latency_Anomaly_Events.

LOW_DEVICE_DISK_SPACE

Explanation: CVP detected that the filesystem space on a device is below the set threshold. To debug  possible causes for the same, please visit https://eos.arista.com/troubleshooting-filesystem-full-issues/

HIGH_CONN_MONITOR_PKT_LOSS

Explanation: CVP detected a CloudTracer packet loss metric greater than the threshold set. The default threshold generates a WARNING event if there is 5% packet loss for longer than 30 seconds, and an ERROR event if there is a 50% packet loss for longer than 30 seconds. For more information, please visit https://eos.arista.com/toi/cvp-2020-1-0/events/#CloudTracer_Packet_Loss_events.

HIGH_CPU_LOAD_AVG

Explanation: CVP detected a high load average on the device. For more information on understanding CPU load average, please visit https://eos.arista.com/troubleshooting-high-cpu-utilization/#4_How_to_identify_average_load_on_an_Arista_switch.

HIGH_INTF_FCS_ERRS

Explanation: CVP detected incremental FCS errors on switch links. FCS errors can be localized to the affected link or propagated as a result of cut-through forwarding. For more information on debugging the cause for the errors, please visit https://www.youtube.com/embed/mcQ-zqNLBeY?rel=0&wmode=transparent.

HIGH_INTF_IN_ERRS

Explanation: CVP detected incremental CRC errors on switch links. CRC errors can be localized to the affected link or propagated as a result of cut-through forwarding. For more information on debugging the cause for the errors, please visit https://www.youtube.com/embed/mcQ-zqNLBeY?rel=0&wmode=transparent.

HIGH_INTF_OUT_DISCARDS

Explanation: CVP detected ongoing congestion on the devices exceeding the threshold limit set. For more information on debugging congestion-related issues, please visit the below links:

HIGH_INTF_OUT_ERRS

Explanation: CVP detected incremental transmit CRC errors on switch links. CRC errors can be localized to the affected link or propagated by the switch as a result of cut-through forwarding. For more information on debugging the cause for the errors, please visit https://www.youtube.com/embed/mcQ-zqNLBeY?rel=0&wmode=transparent.

HIGH_PTP_OFFSET_FROM_MASTER

Explanation: CVP detected the switch is experiencing PTP offsets from the Master exceeding the set threshold. For more information on the PTP BMCA algorithm, please visit https://eos.arista.com/ptp-best-master-clock-algorithm-bmca/.

HIGH_ROUTING_TABLE_SIZE

Explanation: CVP detected that the hardware resource utilization for L3 routes is exceeding the set threshold. For 7280/7500 platforms, please review if route optimization i.e https://eos.arista.com/eos-4-22-0f/optimized-ipv4-route-scale-with-2-to-1-compression/ is needed.

HIGH_STREAMING_LATENCY

Explanation: CVP detected that the switch is streaming at a latency greater than the set threshold. Please check if there is any form of network latency to the CloudVision instance or if there are NTP sync issues. Should neither apply, please reach out to Arista TAC for additional debugging

SYSLOG: DeqDelete

Explanation: CVP detected that the 7280/7500 devices deleted a stale packet that was buffering for more than 500ms on the switch. These are counted as DeqDelete events. For information on the events and how to debug them, please visit https://eos.arista.com/troubleshooting-dequeue-deletes-on-7280-7500-devices/.

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