Verified Scale Limits for Cisco DCNM
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 3000 Series switches. Similarly, External and LAN_Classic fabric templates can be used for legacy 3-tier, FabricPath, and other kinds of deployments.
Note |
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Refer to the following table if you are provisioning new VXLAN EVPN fabrics. The table applies to all deployments except for "Brownfield Migrations".
Description |
Verified Limit |
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Fabric Underlay Overlay |
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Switches
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80 – Managed by a DCNM server with no compute nodes. The managed switches can be part of any of the fabrics: Easy, eBGP, External or LAN_Classic. |
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350 – Managed by a DCNM server with three compute nodes. The managed switches can be part of any of the fabrics: Easy, eBGP, External, or LAN_Classic. |
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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. |
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Physical Interfaces |
30000 |
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Layer-3 scenario: VRFs |
500 |
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Layer-3 scenario: Networks |
1000 |
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Layer 2 scenario: Networks |
1500 |
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VRF instances for external connectivity |
300
|
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Easy fabrics supported for one Multi-Site Domain (MSD) |
8 |
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Endpoint Locator |
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Endpoints |
100000 across a maximum of 4 fabrics (in cluster mode with 3 compute nodes) |
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Virtual Machine Manager (VMM) |
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Virtual Machines (VMs) |
5500 |
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VMware vCenter Servers |
4 |
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IPAM Integrator application |
150 networks with a total of 4K IP allocations on the Infoblox server |
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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 to 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.
Description |
Verified Limit |
---|---|
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. |
Node | CPU Deployment Mode | CPU | Memory | Storage | Network |
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DCNM | OVA/ISO | 16 vCPUs | 32G | 500G HDD | 3xNIC |
Computes | NA | — | — | — | — |
Node | CPU Deployment Mode | CPU | Memory | Storage | Network |
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DCNM | OVA/ISO | 16 vCPUs | 32G | 500G HDD | 3xNIC |
Computes | OVA/ISO | 16 vCPUs | 64G | 500G HDD | 3xNIC |
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 |
SAN Insights
The table specifies values supported for Cisco DCNM SAN deployments.
Description |
Verified Limit 1 |
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Cisco Nexus Dashboard |
60,000 ITLs/ITNs |
Cisco DCNM on OVA Virtual Appliances |
40,000 ITLs/ITNs |
Cisco DCNM on Linux (RHEL) |
20,000 ITLs/ITNs |
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Initiator-Target-LUNs (ITLs)
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Initiator-Target-Namespace ID (ITNs)