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Chapter 1. Verified Scale Limits for Cisco DCNM, Release 11.1(1)

This document describes the verified scale limits for Cisco DCNM 11.1(1) for managing LAN Classic, LAN Fabric, SAN Management, and Media Controller fabrics. The values are validated on testbeds that are enabled with a reasonable number of features, and are not theoretical system limits for Cisco DCNM software or Cisco Nexus 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 Classic Management

This fabric is primarily used for traditional LAN topologies including but not limited to virtual port channels (vPCs), Access-Aggregation-Core, and FabricPath.

Description

Verified Limit

Switches

1000

FEX devices

58

Physical ports

32000

Cisco DCNM LAN Fabric Management

This fabric is primarily used for Cisco Nexus 9000 and Cisco Nexus 3000 Series switches based VXLAN BGP EVPN deployments. (Easy Fabric installation mode).

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

Scale Limits For Provisioning New VXLAN EVPN Fabrics (Also referred to as "Greenfield" Deployment)

Description

Verified Limit

Fabric Underlay and Overlay

Switches

250 - Managed by a DCNM server with three compute nodes.

80 - Managed by a DCNM server with no additional compute nodes required.

Note

DCNM server Native HA is recommended in production setups.

Interfaces

20000

VRF instances

500

Overlay networks

1000

VRF instances for external connectivity

300

Endpoint Locator

Endpoints

10000

Virtual Machine Manager (VMM)

Virtual Machines (VMs)

5500

VMware vCenter Servers

4

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.

Scale Limits For Transitioning Existing Fabric Management to DCNM (Also referred to as "Brownfield Migration")

Description

Verified Limit

Fabric Underlay and Overlay

Switches per fabric

70

Interfaces

5000

VRF instances

500

Overlay networks

1000

VRF instances for external connectivity

300

Endpoint Locator

Endpoints

10000

Virtual Machine Manager (VMM)

Virtual Machines (VMs)

5500

VMware vCenter Servers

4

Cisco DCNM SAN Management

This fabric is used for SAN topologies.

Description

Verified Limit

Switches

80

Hosts or targets

20000

Zone sets

1000

Zones

16000

Notices