Cisco Verified Scale Limits for DCNM User Guide

**Cisco Verified Scale Limits for DCNM User Guide

**

Verified Scale Limits for Cisco DCNM

This document describes the verified scale limits for Cisco DCNM 11.5(1) for managing LAN, SAN, and Media Controller fabrics. The values are validated on testbeds that are enabled with a reasonable number of features, and aren’t theoretical system limits for Cisco DCNM software or Cisco Nexus/MDS switch hardware and software. The values can increase over time with more testing and validation. When you try to achieve maximum scalability by scaling multiple features at the same time, results might differ from the values that are listed here.

Cisco DCNM LAN Fabric Deployment

All LAN deployments will be managed using the LAN Fabric installation mode. The LAN Fabric mode has various fabric templates that can be used for different kinds of data center deployments. For example, the Easy_Fabric template is used for VXLAN BGP EVPN deployments that primarily use Cisco Nexus 9000 and Cisco Nexus 3000Seriesswitches.Similarly, External and LAN_Classic fabric templates can be used for legacy 3-tier, Fabric Path, and other kinds of deployments.

Note

• We recommend that you deploy Cisco DCNM server in Native HA mode in a production setup.
• We recommend native HA deployment for DCNM servers in the DCNM cluster mode with 3 compute nodes.
• NIR scale with DCNM is 350 switches, independent of Managed/Monitored mode. Network Insights applications are only supported in cluster mode. Refer to Cisco Network Insightsfor Resources Application for Cisco DCNM User Guide.

Refer the following table if you are provisioning new VXLAN EVPN fabrics.

Table 1: Scale Limits For Provisioning New VXLAN EVPN Fabrics (Also referred to as “Greenfield” Deployment)

Fabric Underlay Overlay
Switches Note The maximum recommended number of switches per fabric when DCNM is in managed mode is 150.| 80 – Managed by a DCNM server with no compute nodes. The managed switches can be part of any of the fabrics: Easy, eBGP, External orLAN_Classic.
350 – Managed by a DCNM server with three compute nodes. The managed switches can be part of any of the fabrics: Easy, eBGP, External, orLAN_Classic.
750 – Monitored by a DCNM server with and without compute nodes. Monitored switches are typically part of External or LAN_Classic fabrics with monitor mode enabled.
Physical Interfaces| 30000
Layer-3 scenario: VRFs| 500
Description| Verified Limit
---|---
Layer-3 scenario: Networks| 1000
Layer 2 scenario: Networks| 1500
VRF instances for external connectivity| 300 Note 300 VRFs over 1000 Layer-3 network or 300 VRFs over 1500 Layer-2 network is supported.
Easy fabrics supported for one Multi-Site Domain (MSD)| 8
Endpoint Locator
Endpoints| 100000 across a maximum of 4 fabrics (in cluster mode with 3 compute nodes)
Virtual Machine Manager (VMM)
Virtual Machines (VMs)| 5500
VMware vCenter Servers| 4
IPAM Integrator application| 150 networks with a total of 4K IP allocations on the Infoblox server
Kubernetes Visualizer application| A maximum of 159 namespaces along with a maximum of 1002 pods

Note

There is no limit on the number of Multi-Site Domains (MSDs) that can be created.

Refer the following table if you are transitioning a Cisco Nexus 9000 Series switches based VXLAN EVPN fabric management to DCNM. Before the migration, your fabric was an NFM managed or CLI configured fabric.

Table 2: Scale Limits For Transitioning Existing Fabric Management to DCNM (Also referred to as “Brownfield Migration”)

Fabric Underlay and Overlay
Switches per fabric| 100
Physical Interfaces| 5000
VRF instances| 500
Overlay networks| 1000
VRF instances for external connectivity| 300
Endpoint Locator
Endpoints| 100000 across a maximum of 4 fabrics

Virtual Machine Manager (VMM)
Virtual Machines (VMs)| 5500
VMware vCenter Servers| 4
IPAM Integrator application| 150 networks with a total of 4K IP allocations on the Infoblox server
Kubernetes Visualizer application| A maximum of 159 namespaces along with a maximum of 1002 pods

Cisco DCNM LAN Fabric Deployment Without Network Insights (NI)

Note

For information about various system requirements for proper functioning of Cisco DCNM LAN Fabric deployment, see System Requirements.

Refer to Network Insights User guide for sizing information for Cisco DCNM LAN Deployment with Network Insights (NI).

To see the verified scale limits for Cisco DCNM 11.5(1) for managing LAN Fabric deployments, see Verified Scale Limits for Cisco DCNM.

Table 3: Upto 80 Switches

Node| CPU Deployment Mode| CPU| Memory| Storage| Network
---|---|---|---|---|---
DCNM| OVA/ISO| 16vCPUs| 32G| 500G HDD| 3xNIC
Computes| NA| —| —| —| —

Table 4: 81–350 Switches

Node| CPU Deployment Mode| CPU| Memory| Storage| Network
---|---|---|---|---|---
DCNM| OVA/ISO| 16vCPUs| 32G| 500G HDD| 3xNIC
Computes| OVA/ISO| 16vCPUs| 64G| 500G HDD| 3xNIC

Cisco DCNM SAN Management

This fabric is used for SAN topologies.

SAN Insights

The table specifies values supported for Cisco DCNM SAN deployments.

• Initiator-Target-LUNs (ITLs)
• Initiator-Target-Namespace ID (ITNs)

THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE. ALL STATEMENTS, INFORMATION, AND RECOMMENDATIONS IN THIS MANUAL ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. USERS MUST TAKE FULL RESPONSIBILITY FOR THEIR APPLICATION OF ANY PRODUCTS. THE SOFTWARE LICENSE AND LIMITED WARRANTY FOR THE ACCOMPANYING PRODUCT ARE SET FORTH IN THE INFORMATION PACKET THAT SHIPPED WITH THE PRODUCT AND ARE INCORPORATED HEREIN BY THIS REFERENCE. IF YOU ARE UNABLE TO LOCATE THE SOFTWARE LICENSE OR LIMITED WARRANTY, CONTACT YOUR CISCO REPRESENTATIVE FOR A COPY.

The Cisco implementation of TCP header compression is an adaptation of a program developed by the University of California, Berkeley (UCB) as part of UCB’s public domain version of the UNIX operating system. All rights reserved. Copyright © 1981, Regents of the University of California.

NOTWITHSTANDING ANY OTHER WARRANTY HEREIN, ALL DOCUMENT FILES AND SOFTWARE OF THESE SUPPLIERS ARE PROVIDED “AS IS” WITH ALL FAULTS. CISCO AND THE ABOVE- NAMED SUPPLIERS DISCLAIM ALL WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION, THOSE OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OR ARISING FROM A COURSE OF DEALING, USAGE, OR TRADE PRACTICE.

IN NO EVENT SHALL CISCO OR ITS SUPPLIERS BE LIABLE FOR ANY INDIRECT, SPECIAL, CONSEQUENTIAL, OR INCIDENTAL DAMAGES,  INCLUDING, WITHOUTLIMITATION, LOST PROFITS OR LOSS OR DAMAGE TO DATA ARISING OUT OF THE USE OR INABILITY TO USE THIS MANUAL, EVEN IF CISCO OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

Any Internet Protocol (IP) addresses and phone numbers used in this document are not intended to be actual addresses and phone numbers. Any examples, command display output, network topology diagrams, and other figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses or phone numbers  IN illustrative content is unintentional and coincidental.

All printed copies and duplicate soft copies of this document are considered uncontrolled. See the current online version for the latest version.

Cisco has more than 200 offices worldwide. Addresses and phone numbers are listed on the Cisco website at www.cisco.com/go/offices.

The documentation set for this product strives to use bias-free language. For 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  thedocumentation due to language that is hardcoded in the user interfaces of the product software, language used based on standards documentation, or language that is used by a referenced third party product.

Cisco and the Cisco logo are trademarks or registered trademarks of Cisco and/or its affiliates in the U.S. and other countries. To view a list of Cisco trademarks, go to this URL: https://www.cisco.com/c/en/us/about/legal/trademarks.html. Third-party trademarks mentioned are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (1721R)

© 2019–2022 Cisco Systems, Inc. All rights reserved.

Americas Headquarters
Cisco Systems, Inc.
San Jose, CA 95134-1706
USA

Asia Pacific Headquarters
Cisco Systems (USA)Pte. Ltd.
Singapore

Europe Headquarters
Cisco Systems International BV
Amsterdam, The Netherlands

Cisco has more than 200 offices worldwide. Addresses, phone numbers, and fax numbers are listed on the
Cisco Website at www.cisco.com/go/offices

Read User Manual Online (PDF format)

Read User Manual Online (PDF format)  >>

Download This Manual (PDF format)

Download this manual  >>