First Published: August 14, 2018

Last Updated: October 10, 2019

Configuration Limits

New and Changed Information for This Release

The following table provides an overview of the significant changes to this guide for this current release. The table does not provide an exhaustive list of all changes made to this guide or of all new features in this release.

Table 1. New and Changed Configuration Values in Cisco UCS Manager, Release 4.0(4)

Feature

Description

Where Documented

Uplink port channels per Fabric interconnect

For UCS 6454 Fabric Interconnets, this value was changed from 12 to 8

Ethernet Environment Configuration Limits

Native FC links

For UCS 6454 Fabric Interconnets, this value was changed from 8 to 16

Fibre Channel Environment Configuration Limits

Configuration Limits

The following tables list the Cisco verified limits for Cisco UCS 6200, 6332, 6324, and 6454 series fabric interconnects with Cisco UCS Manager Release 4.0.

The limits in this document indicate the maximum scale capability tested for the corresponding feature individually. This number is the absolute maximum currently supported by Cisco UCS Manager for the corresponding feature. When used in combination, the practical limit for each feature may be lower than the maximum limit cited in this document.


Note
For additional VMware ESX configuration information, see the Cisco VM-FEX Best Practices for VMware ESX Environment Deployment Guide available at the following URL: http://www.cisco.com/en/US/solutions/collateral/ns340/ns517/ns224/ns944/vm_fex_best_practices_deployment_guide_ns1124_Networking_Solutions_White_Paper.html

Ethernet Environment Configuration Limits

Feature Cisco UCS 6200 Series Cisco UCS 6332 Series Cisco UCS 6324 Cisco UCS 6454

Active VLANs per Cisco UCS domain

2000

This is the combined total of VLANs and VSANs that can be configured on each fabric interconnect. Of that total, no more than 32 can be VSANs.

3000

This is the combined total of VLANs and VSANs that can be configured on each fabric interconnect. Of that total, no more than 32 can be VSANs.

982

3000

VLAN/VSAN ID space per Cisco UCS domain

4030-4047 and 4095 are reserved

4030-4047 and 4095 are reserved

4030-4047 and 4095 are reserved

3915-4042 are reserved and can be modified. Refer to the Cisco UCS Networking Management Guide for additional information on Reserved VLANs.

4030-4047 and 4095 are reserved and fixed

STP logical Interfaces (also referred to as VLAN port count) per fabric interconnect

Note 

The only exception is for failover vNICs. These consume resources on a per Cisco UCS domain basis.

64000 (with VLAN Port Count Optimization enabled)

32000 (with VLAN Port Count Optimization disabled)

64000 (with VLAN Port Count Optimization enabled)

16000 (with VLAN Port Count Optimization disabled)

4096

64000 (with VLAN Port Count Optimization enabled)

16000 (with VLAN Port Count Optimization disabled)

VIFs (virtual interfaces) per fabric interconnect that map through VM-FEX to a vNIC or VM itself

Note 

The only exception is for failover vNICs. These consume resources on a per Cisco UCS domain basis.

VMware VM-FEX—2750

Hyper-V and KVM—2000

VMware VM-FEX—2750

KVM VM-FEX—2670

648

1600

IGMP groups per Cisco UCS domain

4000

4000

1000

4000

Uplink port channels per fabric interconnect

12

12

4

8

Note 

When there is a mix of FC SAN port channels and FCoE SAN port channels, then together they cannot exceed a total of 8 port channels in the system.

FC SAN port channels + FCoE SAN port channels: 8 (4 +4, 3+ 5, 2+ 6, 1+7, or 0+8)

Maximum number of uplinks per fabric interconnect (including up to12 port channels)

31

31

4

31

Member interfaces per port channel

16

16

4

16

Interfaces per FCoE SAN port channel

16

16

4

16

Primary VLANs per Cisco UCS domain

Note 

Private VLANs count towards the total number of VLANs.

150

150

N/A

150

Secondary VLANs per Cisco UCS domain

1000

1000

N/A

1000

Maximum secondary VLANs per primary VLANs.

200

200

N/A

200

QOS system classes per Cisco UCS domain

6 (including the class default)

6 (including the class default)

6

6 (including the class default)

VIC Environment Configuration Limits

Static Virtual NICs per Host for Cisco UCS 6200 Series, Cisco UCS 6332 Series, Cisco 6324, and 6454 Fabric Interconnects

OS vNICs vHBAs Max Combination of vNICs and vHBAs

Win 2008 SP2 and R2 SP1

20

16

12 Enics and 8 Fnics

Win 2012 and Win 2012 R2

20

16

12 Enics and 8 Fnics

Windows 2016

20

16

12 Enics and 8 Fnics

Windows 2019

20

16

12 Enics and 8 Fnics

Red Hat Enterprise Linux 5.9 - 7.6

32

16

24 Enics and 8 Fnics

ESX 5.0 U2 - ESX 6.7 U1

26

16

18 Enics and 8 Fnics

or 24 Enics and 2 Fnics

XenServer 6.1 – 7.5

32

16

24 Enics and 8 Fnics

OL 6.4 to 7.3

18

6

18 Enics and 6 Fnics

SUSE Linux Enterprise Server 11.2 to 15 64bit

32

16

24 Enics and 8 Fnics

Ubuntu 12.04.2 to 18

32

N/A

32 Enics

Dynamic Virtual NICs

Dynamic vNICs are not supported by Cisco 6454 Fabric Interconnects.


Note

Dynamic vNICs are not supported on VIC 14XX adapters with Windows and ESX OS versions.
Cisco UCS 6200 Series, Cisco UCS 6332 Series, and Cisco 6324 Fabric Interconnect
Max vNICs for Emulated Mode Max vNICs for Hypervisor Bypass Mode

OS

Half Width Blade (1 VIC)

Full Width Blade (2 VIC)

Half Width Blade (1 VIC)

Full Width Blade (2 VIC)

ESXi 5.0 U2—5.5

114 vNICs and 2 vHBAs

114 vNICs and 2 vHBAs

114 vNICs and 2 vHBAs

114 vNICs and 2 vHBAs

ESXi 6.5—6.7 U1
Note 

VM-FEX is not supported for ESXi 6.5—6.7.

Windows 2012 (SR-IOV)

114 vNICs and 2 vHBAs

223 vNICs with 4 vHBAs

114 vNICs and 2 vHBAs

223 vNICs with 4 vHBAs

KVM 6.2—7.6 (SR-IOV with MacVTap)

Note 

KVM is not supported on the Cisco 6324 Fabric Interconnect

114 vNICs and 2 vHBAs

223 vNICs with 4 vHBAs

N/A

N/A

KVM 6.3 —7.6 (SR-IOV with PCI Passthrough)

Note 

KVM is not supported on the Cisco 6324 Fabric Interconnect

N/A

N/A

114 vNICs and 2 vHBAs

223 vNICs with 4 vHBAs

Fibre Channel Environment Configuration Limits

Feature Cisco UCS 6200 Series Cisco UCS 6332 Series Cisco UCS 6324

Cisco 6454

VSANs

32

A combined total of 2000 VLANs and VSANs can be configured on each fabric interconnect.

6332-16UP—15

6332—32

A combined total of 3000 VLANs and VSANs can be configured on each fabric interconnect.

32

32

Zones

  • Per VSAN—8000

  • Across all VSANS—8000

If you implement Cisco UCS Manager-based zoning, the maximum number of targets per service profile is 64.

  • Per VSAN—8000

  • Across all VSANS—8000

If you implement Cisco UCS Manager-based zoning, the maximum number of targets per service profile is 64.

  • Per VSAN—4000

  • Across all VSANS—4000

If you implement Cisco UCS Manager-based zoning, the maximum number of targets per service profile is 4.

  • Per VSAN—8000

  • Across all VSANS—8000

If you implement Cisco UCS Manager-based zoning, the maximum number of targets per service profile is 64.

Native FC links

6248—Up to 48

6296—Up to 96

6332-16UP—16

6332—N/A

4

16

Ports 1 to 16 support native FC

Note 

The number of FC links was increased from 8 to 16 in Cisco UCS Manager Release 4.0(4a)

Virtual Fibre Channel interfaces per fabric interconnect

320

320

30

320

Virtual Fibre Channel interfaces per blade

16

16

16

16

FC-NVMe initiators per blade

4

4

4

4

Flogis per fabric interconnect

320

320

255

320

Maximum number of FC SAN port channels

4

4

1

4

Maximum port channel members per port channel

16

16

4

8

Port channel mode in NPV

Active

Active

N/A

Active

Port channel mode in FC switching

On

On

On

On

VM-FEX Environment Configuration Limits

Cisco UCS 6200 Series Cisco UCS 6332 Series Cisco UCS 6454
Hypervisor Manager DVS /Logical Switches Hypervisor Manager DVS /Logical Switches Hypervisor Manager DVS /Logical Switches

ESX/ESXi

4 vCenter per Cisco UCS domain

8 DVS per vCenter

4 vCenter per Cisco UCS domain

8 DVS per vCenter

N/A

N/A

Hyper-V

4 SCVMM hosts per Cisco UCS domain

8 logical switches per SCVMM

4 SCVMM hosts per Cisco UCS domain

8 logical switches per SCVMM

N/A

N/A

KVM

N/A

1 DVS per Cisco UCS domain

N/A

1 DVS per Cisco UCS domain

N/A

N/A

Port profiles per Cisco UCS domain

512

512

N/A

Dynamic ports per port profile

4096

4096

N/A

Dynamic ports per DVS

4096

4096

N/A

SCVMM Support Matrix


Note

  • SCVMM VM-FEX for UCS 6454 Fabric Interconnects is not supported with VIC 14XX adapters

  • SCVMM VM-FEX is not supported with Windows 2019


Note

When you configure scale environment, make sure to configure retention timer value as 30 minutes.

Microsoft Software

Cisco UCS Software

Active Directory Services

SCVMM 2012 SP1, SCVMM 2012R2, or SCVMM 2016 1

Cisco UCS Manager, release 3.2(1a) Infrastructure Bundle and Adapter Firmware

Cisco ENIC Drivers for Windows Server 2012

Cisco ENIC Drivers for Windows Server 2012 R2

Cisco ENIC Drivers for Windows Server 2016

AD 2008 R2 and SP1, Windows 2012, Windows 2012R2, Windows 2016

AD Domain Controller must have the following:

  • DNS

  • DHCP

Windows 2012, Windows 2012R2, or Windows 2016 with Hyper-V installed
1

Using SCVMM also requires MS SQL Server and Windows ADK. Refer to the Microsoft documentation for additional instructions.

General Network Configuration Limits

Feature Cisco UCS 6200 Series Cisco UCS 6332 Series Cisco UCS 6324 Cisco UCS 6454

Unicast MAC addresses per fabric interconnect

20000 entries

32000 entries

20000 entries

32000 entries

Multicast MAC addresses per fabric interconnect

7000

7000

400

N/A

Secured interfaces per Cisco UCS domain

1000

1000 out of the 2000 VIFs can be port-secured.

1000

1000 out of the 2000 VIFs can be port-secured.

N/A

1000

1000 out of the 2000 VIFs can be port-secured.

Secured MAC addresses per Cisco UCS domain

2000

MAC addresses secured using the port-security feature.

2000

MAC addresses secured using the port-security feature.

N/A

2000

MAC addresses secured using the port-security feature.

Maximum MTU

9000

9000

9216

9000

1G ports 2

6248—Up to 48

6296—Up to 96

6332-16UP—16

6332—First 4 ports

4—First 4 unified ports

4 unified ports

Ports 45-48

SPAN active sessions per fabric interconnect

4

4

2

4

Appliance ports per fabric interconnect

16

16

2

16
2 For Ethernet Traffic Monitoring sessions in 6332 and 6332-16UP FIs, you cannot use the 1Gbps speed configuration for the configured Ethernet Destination Port.

General Management Configuration Limits

Feature Cisco UCS 6200 Series Cisco UCS 6332 Series Cisco UCS 6324 Cisco 6454

Chassis per Cisco UCS domain

20

20

2

20

Maximum combined number of blade and rack servers per Cisco UCS domain

160

160

20 (16 blade servers and 4 rack servers)

160
Maximum number of 2232PP Fabric Extenders per Cisco UCS domain 3

20 (10 per fabric interconnect)

20 (10 per fabric interconnect)

N/A

20 (10 per fabric interconnect)

Local user accounts per Cisco UCS domain

48

48

48

48

Concurrent logins per user account

64

This total includes a maximum of 32 concurrent GUI logins and 32 concurrent CLI logins per user account.

This value is the same for both local and remote user accounts.

64

This total includes a maximum of 32 concurrent GUI logins and 32 concurrent CLI logins per user account.

This value is the same for both local and remote user accounts.

64

This value is the same for both local and remote user accounts.

This total includes a maximum of 32 concurrent GUI logins and 32 concurrent CLI logins per user account.

64

This total includes a maximum of 32 concurrent GUI logins and 32 concurrent CLI logins per user account.

This value is the same for both local and remote user accounts.

Active KVM sessions per individual CIMC

4

4

4

4

Concurrent CLI logins per Cisco UCS Manager

32

32

32

32

Concurrent GUI logins per Cisco UCS Manager

256

256

256

256

Number of LDAP groups per Cisco UCS Manager

160

160

160

160

Number of adapter end points per Cisco UCS Manager

320

320

30

320
3

There is a limit of twenty FEX for each UCS domain. For example, you can either have ten 2232 FEX for each FI or a combination of ten chassis and ten FEX.