Cisco Nexus Dashboard Insights (Nexus Dashboard Insights) service provides assurance, advisory, troubleshooting capabilities to address the operational needs of networks in a data center.

This document describes the features, issues, and limitations for Nexus Dashboard Insights on Cisco Nexus Dashboard.

For more information, see the “Related Content” section of this document.

Date

Description

July 26, 2023

Added CSCwf10158 to the Resolved Issues section.

June 16, 2023

Release 6.2.2.380 became available.

April 16, 2023

Release 6.2.2.368 became available.

New Software Features

Product Impact

Feature

Description

Base Functionality

Interface based Flow Telemetry

Added support to configure flow telemetry rules for interfaces such as L3Outs, SVIs, Physical Interfaces, and Port Channel.

Open Issues

This section lists the open issues in this release. Click the bug ID to access the Bug Search tool and see additional information about the caveat. The “Exists In” column of the table specifies the releases in which the issue exists.

Bug ID

Description

Exists In

CSCvv31282

If there is single chip spine in the flow path, then it is not reported in the flow path summary.

6.2.2

CSCvw03887

In flow analytics the health score on the flow records is displayed as healthy even when ingress flow records are not available.

6.2.2

CSCvw05400

After reaching the 500 flows limit, any extra flows will not be reported. These un-programmed extra flows will not be reported even when we delete few of the programmed flows.

6.2.2

CSCvw24739

In flow analytics page, PC and vPC interface ID are displayed instead of port name.

6.2.2

CSCvy33992

Aborted DAGs does not indicate that there is partial data in Nexus Dashboard Insights GUI.

6.2.2

CSCvz07734

Duplicate endpoint Anomalies in Nexus Dashboard Insights.

6.2.2

CSCvz29928

Inconsistency in counts from aggregate view to primary affected objects view for anomalies.

6.2.2

CSCvz52746

Tenant, VRF and EPG details will not be reported in Flow Browse or Details page if Q-in-Q flow is monitored using Netflow in Nexus Dashboard Insights.

6.2.2

CSCvz52902

The Explorer "Can" query, "Can EPG:A talk to EPG:B?" may sometimes include in the Policy Table additional incorrect rules as the ones allowing the communication. However, the correct rule that allows the communication is always present in the table.

6.2.2

CSCvz67522

Nexus Dashboard Insights does not model Endpoint Security Groups and related rules.

Stale Policy CAM rules and Enforced VRF policy violation anomaly will be displayed in Nexus Dashboard Insights

6.2.2

CSCwa13919

The anomaly record from the summary view may show the status of anomaly that is different than the one shown in Analyze page or details view.

6.2.2

CSCwb28067

If same EPG name is used across tenants in ACI sites, then flow path stitching and its details could be incorrect. This could impact forward, and reverse path stitch shown in flow pages of Nexus Dashboard Insights.

6.2.2

CSCwb32920

On a scale setup when analysis is running, sometimes anomalies and the details view has a different anomaly name for a very small set of anomalies.

6.2.2

CSCwb39004

Nexus Dashboard Orchestrator job schedule and Inter-Site view in the anomaly table usability issues

6.2.2

CSCwb41846

As part of Nexus Dashboard Orchestrator Explore workflow, in Endpoint table 'unknown epgs’ is displayed in the EPGs column.

6.2.2

CSCwb43792

vCenter anomalies are not exported as part of email export, when basic or advanced option is selected.

6.2.2

CSCwb57504

NDO Endpoints Out of Sync Between Sites anomaly is generated for a subset of endpoints even though spine switch does not have the endpoint entry in the coop table.

6.2.2

CSCwb69431

In the NetFlow mode, after you disable and re-enable Nexus Dashboard Insights, VRF and EPG information are not available sometimes in the flow analytics page.

6.2.2

CSCwb74134

Estimated Impact for BGP Prefix Received Count Fluctuation anomaly is missing

6.2.2

CSCwb76417

Flow Rate Statistics feature under System Status Page can sometimes have empty Node Flow Rate tables.

6.2.2

CSCwb87579

Since Explore is designed to support max fabric wide rules of 150k, nae-policy-explorer pod would go OOM when Explore "Connectivity analysis " is run for completed epoch having a large policy scale.

6.2.2

CSCwd83293

A switch reloads with a core dump of dcgrpc, dc_nae, dc, or any combination of these processes.

6.2.2

CSCwe21741

As an impact of deprecation of some anomalies, Associated Policies section may not show node details for Policy CAM.

6.2.2

CSCwe21741

As an impact of deprecation of some anomalies, Associated Policies section may not show node details for Policy CAM.

6.2.2

CSCwe46046

Scheduled jobs are queuing up in the Configure Site Group > Assurance Analysis page.

6.2.2

CSCwe53051

For assurance anomalies, the primary affected objects are not displayed in the aggregated view.

6.2.2

CSCwe81243

vPC down anomaly takes longer than 20 minutes to clear.

6.2.2

CSCwe87280

Anomalies not shown in Primary Affected Object view if the assurance job is not run in the last 2 hours.

6.2.2

Resolved Issues

This section lists the resolved issues in this release. Click the bug ID to access the Bug Search tool and see additional information about the caveat. The “Exists In” column of the table specifies the releases in which the issue exists.

Bug ID

Description

Fixed In

CSCwb31695

COLO_SCALE: Email notification is received for anomalies of the subcategory/category type as EVPN and Change Analysis.

6.2.2.380

CSCwe21845

Metadata checksum failure.

6.2.2.380

CSCwf23115

Nexus Dashboard Insights bug scans are taking too long and timing out.

6.2.2.380

CSCwf09136

Nae pods are down, due to the "cisco-nae-secret" not being found, after an upgrade from 6.1.3 to 6.2.1.329.

6.2.2.380

CSCwf10158

Stale Anomalies of certain categories are not cleared for over a long period of time and are visible in the GUI.

6.2.2.380

Known Issues

This section lists the known issues in this release. Click the bug ID to access the Bug Search tool and see additional information about the caveat. The "Exists" column of the table specifies whether the issue was resolved in the base release or a patch release.

Bug ID

Description

Exists In

CSCvv31284

External EPG name is not reported in Cisco Nexus Insights app even though the subnet is specified.

6.2.2

CSCvw11059

The EX tier-1 leaf switch is not stitched in the flow path.

6.2.2

CSCwb59463

In ACI platforms, with fast-link-fail over feature enabled, path summary will not have north bound or spine facing information in the flow path summary for FX2 based platforms.

6.2.2

CSCwb92508

When you click on Pre-Change Analysis rows in the table, if you navigate through them a bit faster without waiting for the sidebar to completely load, you may sometimes notice duplicated changes added in the form.

6.2.2

CSCvr32097

LLDP transmit receive packets statistics graph displays the same values regardless of the selected time range.

6.2.2

CSCwa86961

When L4-L7 intra VRF traffic is going through spine switches, Nexus Dashboard Insights flow path summary might not show spine switch information like spine name and interface names.

6.2.2

CSCwb02805

In Nexus Dashboard Insights, flow path information for L4-L7 traffic does not show the L3Out service leaf switch information.

6.2.2

CSCwb66891

For L3Out to EPG intra-VRF L4-L7 traffic, some of leaf switches and spine switches might not exporting flow information. Flow path will not include those nodes in the path information.

6.2.2

Compatibility Information

For Nexus Dashboard Insights compatibility information see the Services Compatibility Matrix.

Software

Release/PID

Cisco Device supported for Software Telemetry

Cisco Nexus 9000 Series switches

Cisco Nexus Dashboard cluster

SE-CL-L3, ND-CLUSTER-L4

Minimum Intersight Device Connector version on Cisco Nexus Dashboard

1.0.9-828

Cisco Device supported for Flow Telemetry

Cisco Nexus 9300-EX, -FX, -FX2, -GX, and 9500 platform switches with EX, FX line cards

Cisco Nexus 9000 FX3 and 9336C-FX2-E platform switches

Minimum Cisco APIC version required for FTE and Micro-Burst

5.1(1h)

AppDynamics APM

4.5

Verified Scalability Limits

Software/Hardware

Scale Limits

Number of ACI sites

8 for physical Nexus Dashboard

4 for virtual Nexus Dashboard

Number of ACI nodes (includes ACI switches)

500 for physical Nexus Dashboard

50 for virtual Nexus Dashboard

Maximum support for a 3-node Cisco Nexus Dashboard cluster

Site with 50 nodes, 60000 Endpoints per Site Group and 100000 per cluster, and 10000 Flows

Maximum support for a 4-node Cisco Nexus Dashboard cluster

Site with 100 nodes, 60000 Endpoints per Site Group and 140000 per cluster, and 10000 Flows, and 300000 logical rules

Maximum support for a 6-node Cisco Nexus Dashboard cluster

Site with 500 nodes, 60000 Endpoints per Site Group and 200000 per cluster, 20000 Flows, and 300000 logical rules

Maximum support for a 6-node Cisco Virtual Nexus Dashboard (vND) cluster

Site with 50 nodes, 5000 Endpoints per Site Group and 20000 per cluster, 2500 Flows, and 100000 logical rules

Maximum support for a 9-node Cisco Virtual Nexus Dashboard (vND) cluster

(3 data nodes and 6 app nodes)

Site with 200 nodes, 5000 Endpoints per Site Group and 20000 per cluster, 5000 Flows, and 100000 logical rules

Maximum number of leaf switches in a POD running PTP

128

288 for APIC release 5.2(5) and later

Rollup and Retention Numbers for Nexus Dashboard Insights Telemetry

Nexus Dashboard Insights implements a multi-level roll-up strategy for the telemetry streamed that enables better management of the data. The following table provides information about roll-up and retention policy in Nexus Dashboard Insights.

Statistics Name

Granularity  (Time difference between sample points)

Retention proposed for Nexus Dashboard Insights

Interfaces and Protocols Statistics and Error Counters

1 minute

3 days

5 minutes

7 days

3 hours

30 days

Resources and Environmental Statistics

5 minutes

7 days

3 hours

30 days

Integrations Statistics (AppDynamics)

5 minutes

7 days

3 hours

30 days

Anomalies and Advisories

On-event*

30 days

Microburst

On-event*

7 days

Endpoints History**

On-event*

7 days

Events

On-event*

15 days

Flows and Flow Telemetry Events

-

7 days

Delta Analysis

-

30 days

*On-event: The data is sent from the switch or stored in the database only if the state of the object has changed.

** Endpoint History tracks the moves and modifications of an endpoint for last 7 days.

Usage Guidelines and Limitations

This section lists the usage guidelines and limitations for Cisco Nexus Dashboard Insights:

●     Nexus Dashboard Insights downgrade is not supported.

●     When the Device Connector is unclaimed from the on-premises GUI application, the Device Connector must be unclaimed from Intersight for TAC Assist’s connected TAC functionality to work.

●     After modifying a bridge domain or VRF instance for an EPG, the flows show errors and flow analytics does not work as expected.

●     For virtual Nexus Dashboard (vND), you must provision the underlying HOST with Distributed Virtual Switch and not with a Standard Virtual Switch.

●     In Multi-cluster setup, remote cluster system anomalies are not displayed in the local cluster. You must log in to the remote cluster to view the system anomalies.

●     Nexus Dashboard Insights creates a user in APIC called cisco_SN_NI. This user is used when Nexus Dashboard Insights needs to make any changes or query any information from APIC. In APIC navigate to System > History > Audit Logs tab. Cisco_SN_NI user is displayed in the user column.

●     If you have not configured persistent IP addresses in Nexus Dashboard, you will receive the following error message:

utr and collectorpersistent services not in desired state

This error message has no functional impact and you can either ignore the error message or add 7 persistent IP addresses after the cluster is deployed using the External Service Pools configuration in the Nexus Dashboard UI, as described in the Cisco Nexus Dashboard User Guide. After allocating the persistent IPs, you must disable and enable Nexus Dashboard Insights.

Related Content

The Cisco Nexus Dashboard Insights documentation can be accessed from the following website:

https://www.cisco.com/c/en/us/support/data-center-analytics/nexus-insights/series.html

The documentation includes installation, upgrade, configuration, programming, and troubleshooting guides, technical references, and release notes, as well as other documentation.

Document

Description

Cisco Nexus Dashboard Insights Release Notes for Cisco ACI

This document.

Cisco Nexus Dashboard Insights Deployment Guide

Describes how to install and upgrade Nexus Dashboard Insights.

Cisco Nexus Dashboard Insights User Guide for Cisco ACI

Describes how to use Nexus Dashboard Insights.

Documentation Feedback

To provide technical feedback on this document, or to report an error or omission, send your comments to ciscodcnapps-docfeedback@cisco.com.

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