Cisco Nexus Insights Release Notes, Release 5.0(1) for Cisco DCNM

                                   

 

 

Cisco Nexus Insights (NI) application consist of a pair of monitoring utilities that can be added to the Cisco Data Center Network Manager (DCNM).

This document describes the features, issues, and limitations for Cisco NI app on the Cisco DCNM.

For more information, see Related Content

Note: The documentation set for this product strives to use bias-free language. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product.

 

New Software Features

Note:       For Cisco NI Release 5.0(1), you must install the latest software maintenance update on Cisco DCNM Release 11.4(1). See Installing Software Maintenance Update on Cisco DCNM 11.4(1) for more information.

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.

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.

 

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.

Hardware Requirements

The Cisco NI application supports Cisco DCNM 11.4(1) release. It is recommended to use the latest Cisco DCNM release. It is recommended to have a native HA (DCNM primary/secondary) + 3 Compute node deployment for Cisco DCNM when you want to run Cisco NI but not mandatory.

Table 1.           Hardware Requirements for Deployments up to 80 Switches and 2000 Flows

 

Table 2.           Hardware Requirements for Deployments from 81 to 350 Switches and 12000 Flows

* A logical CPU is a Virtual CPU in a virtual hypervisor based environment and is a hyperthread in a baremetal environment.

Compatibility Information

For Cisco NI on Cisco DCNM compatibility with Day-2 Operations apps, see the Cisco Data Center Networking Applications Compatibility Matrix.

Note:       Flow Telemetry data will consume 6MB for 10K IPv4 flows per node. Flow Telemetry data will consume 12MB for 10K IPv6 flows per node.

Verified Scalability Limits

Note:       For fabrics greater than 150 nodes, monitored mode is recommended.

Usage Guidelines and Limitations

This section lists the usage guidelines and limitations for Cisco NI app:

●     The Cisco NI application requires that physical servers hosting Cisco DCNM computes as VMs are at least Cisco C220-M4 category. It is also required that a compute be hosted on a data store with a dedicated hard disk of atleast 500GB. See Hardware Requirements.

●     The Cisco NI application installation on Cisco DCNM requires that the DNS server is valid and reachable.

●     Telemetry for hardware TCAM utilization, such as forwarding TCAM and ACL TCAM are not supported on Cisco Nexus C9504, C9508, and C9516 platform switches.

●     Cisco NI app does not support software telemetry and flow telemetry data from switches to the flow collector running on Cisco DCNM compute nodes over IPv6.

●     Software Telemetry telemetry should be enabled before enabling Hardware Telemetry.

●     Cisco NI app checks for metadata update every hour. However, there may not be an update every time.

●     After metadata update you need to run manual bug scan to reflect PSIRTs.

●     User initiated upload to Cisco Intersight Cloud fails if the Log Collector job completed prior to Cisco DCNM HA failover. It is recommended to start a new Log Collector job after Cisco DCNM HA failover.

●     The Hardware Resources tab in System Resource Utilization Dashboard is not supported for Cisco Nexus 7000 series switches. The hardware resources do not have a direct mapping to the objects that show in Cisco NI app. The command that shows hardware details does not provide the percentage of entries used and the maximum number of entries allocated for a particular feature. The Cisco NI application does not raise the anomalies and details page for any resource in Hardware Resources tab for Cisco Nexus 7000 series switches.

●     The features supported on Cisco Nexus 7000 series switches includes Environmental, Statistics, and Resources.

●     The features not supported on Cisco Nexus 7000 series switches includes Endpoint Analytics, Multicast, Microburst, CDP statistics protocol, and harware resource statistics such as COPP, HRT, LPM, QoS, and ACL.

●     The features supported on Cisco Nexus 3000 series switches includes Enviromental, Statistics, and Resources.

●     The features not supported on Cisco Nexus 3000 series includes Endpoint Analytics, Multicast, and Microburst.

●     The IGMP and IGMP Snoop multicast statistics protocols are supported only on Cisco Nexus 9000 series switches.

●     The IGMP and IGMP Snoop multicast statistics protocols are not supported for the following:

◦         Cisco Nexus 3000 and 7000 series switches.

◦         Cisco N9K-X9636C-R, N9K-X9636Q-R, N9K-X96136YC-R, and N3K-C3636C-R line cards.

●      Cisco NI app does not support BGP PrefixSaved statistics on the following:

◦         Cisco Nexus 3000, 7000, and 9000 platform switches.

◦         Cisco N9K-X96136YC-R, N9K-X9636C-R, N9K-X9636Q-R, and N3K-C3636C-R line cards.

●     Classic fabric type is supported for host flow overlay monitoring. VXLAN fabric type is not supported for host overlay flow monitoring.

●     Cisco DCNM allows network-admin and network-operator roles to assign read or write access for fabrics. Cisco NI app displays all the fabrics even though you do not have permission to modify. Any operation on a fabric fails without read or write access to the fabric. Cisco NI app does not enforce the RBAC roles configured in Cisco DCNM, the operations that telemetry manager generates are filtered/enforced by Cisco DCNM according to the RBAC rules configured.

●     In switch add cases, the software or the hardware fabric state might show the final state as Enable-failed. Under this condition the GUI might not refresh the Configuration setup page. Even though the fabric has reached a final state, the failed switch retry might be happening. In order to view the correct fabric and switch states, exit the Configuration Setup page and return back to the Setup page. Click the pending or failed switches to determine if the status has been updated from "Processing" to "Failure" or "Success" states.

●     After enabling Cisco NI on a fabric and adding a group of switches together to the fabric, DCNM sends notification for the newly added switches. When NI tries to program the newly added switches, DCNM can be potentially finishing the switch discovery for these switches. In this case, the NI operation fails on the switches. The failed NI operations should be retried with retry facility in Cisco NI.

●     Enabling Flow collection on NI 5.0 deployed on DCNM 11.5(1) with Cisco NX-OS version 9.3(5), results in OUT_OF_SYNC issue in DCNM. This issue is applicable to -FX2 platform switches only.  To resolve this issue, perform the following steps:

◦    After enabling Flow collection, create a switch freeform intent from DCNM for FX2 switches with the following configuration.

flow event telemetryFlowEvent

  group drop-events

    flow-count 500

◦    Remove the intent whenever Flow collection is disabled from NI to avoid fabric OUT_OF_SYNC issue observed in DCNM.

To disable Flow collection, choose Settings > Data Management > Flows >. In the Flows Rules Configuration page, click the Flow Collection slider.

See Enabling Freeform Configurations on Fabric Switches for more information.

●     If NI 5.0 is enabled, you will not be able to enable Cisco Network Insights Base app on DCNM.

Related Content

The Cisco NI 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.

 

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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