Verified Scale Limits for Cisco DCNM
Verified Scale Limits for Cisco DCNM
This document describes the verified scale limits for Cisco DCNM 11.3(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 Classic LAN 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 |
64 |
Physical ports |
36000 |
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).
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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 |
||
---|---|---|---|
Fabric Underlay and Overlay |
|||
Switches
|
80 – Managed by a DCNM server with no compute nodes. |
||
350 – Managed by a DCNM server with three compute nodes. |
|||
750 – Monitored by a DCNM server with no compute nodes. |
|||
Interfaces |
30000 |
||
Layer-3 scenario: VRFs |
500 |
||
Layer-3 scenario: Networks |
1000 |
||
Layer 2 scenario: Networks |
1500 |
||
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 |
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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 |
70 |
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 |
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
A maximum of 20K Initiator-Target-LUNs (ITLs) and Initiator-Target-N (ITNs) combined are supported .The 'N' in ITN represents a namespace ID.