Configuration Limits
Configuration Limits
Cisco UCS Manager Release 4.1 introduces the UCS 64108 Fabric Interconnect to Cisco UCS 6400 Series Fabric Interconnects. The Cisco UCS 6400 Series Fabric Interconnect now consists of UCS 64108 and UCS 6454 Fabric Interconnects. The following tables list the Cisco verified limits for Cisco UCS 6200, 6332, 6324, and 6400 Series Fabric Interconnects with Cisco UCS Manager Release 4.1.
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.
Ethernet Environment Configuration Limits
Feature |
Cisco UCS 6200 Series |
Cisco UCS 6332 Series |
Cisco UCS 6324 |
Cisco UCS 6400 Series |
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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 |
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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 |
4030-4047 and 4095 are reserved and fixed |
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STP logical Interfaces (also referred to as VLAN port count) per fabric interconnect * |
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 |
108000 (with VLAN Port Count Optimization enabled) 16000 (with VLAN Port Count Optimization disabled) |
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VIFs (virtual interfaces) per fabric interconnect that map through VM-FEX to a vNIC or VM itself * |
KVM VM-FEX—2000 ** |
KVM VM-FEX—2670 ** |
648 |
1600 |
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IGMP groups per Cisco UCS domain |
4000 |
4000 |
1000 |
16000 |
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Uplink port channels per fabric interconnect |
12 |
12 |
4 |
12* |
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Maximum number of uplinks per fabric interconnect (including up to12 port channels) |
31 |
31 |
4 |
31 |
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Member interfaces per port channel |
16 |
16 |
4 |
16 |
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Interfaces per FCoE SAN port channel |
16 |
16 |
4 |
16 |
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Primary VLANs per Cisco UCS domain* |
150 |
50 |
N/A |
150 |
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Secondary VLANs per Cisco UCS domain |
1000 |
1000 |
N/A |
1000 |
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Maximum secondary VLANs per primary VLANs. |
200 |
200 |
N/A |
200 |
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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, 6400, and 6536 Series Fabric Interconnects
OS | vNICs | vHBAs | Max Combination of vNICs and vHBAs |
---|---|---|---|
Windows 2016 |
20 |
16 |
12 Enics and 8 Fnics |
Windows 2019 |
20 |
16 |
12 Enics and 8 Fnics |
Red Hat Enterprise Linux 7.6 - 7.7, 8.0 - 8.1 |
32 |
16 |
24 Enics and 8 Fnics |
ESXi 6.5 U3, 6.7 U2, 6.7 U3 |
26 |
16 |
18 Enics and 8 Fnics or 24 Enics and 2 Fnics |
XenServer 7.1 – 7.6, 8.0 |
32 |
16 |
24 Enics and 8 Fnics |
OL Unbreakable Enterprise Kernel R4 U7, R5 U1, R5 U2. OL |
18 |
6 |
18 Enics and 6 Fnics |
SUSE Linux Enterprise Server 12 SP4, 12 SP5, 15, 15 SP1 |
32 |
16 |
24 Enics and 8 Fnics |
Ubuntu 16.04.5, 16.04.06, 18.04.1, 18.04.2 |
32 |
N/A |
32 Enics |
CentOs 7.6 - 8.0 |
32 |
16 |
24 Enics and 8 Fnics |
Dynamic Virtual NICs
Dynamic vNICs are not supported by Cisco 6400 Series Fabric Interconnects. Dynamic vNICs are not supported on VIC 14XX adapters with Windows and ESX OS versions.
![]() Note |
**Beginning with Cisco UCS Manager Release 4.1(1), VMware VM-FEX and Hyper-V VM-FEX are no longer supported. VM-FEX is supported only with Linux. |
Cisco UCS 6200 Series, Cisco UCS 6332 Series, and Cisco 6324 Fabric Interconnect | ||||||
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OS | Max vNICs for Emulated Mode | Max vNICs for Hypervisor Bypass Mode | ||||
Half Width Blade (1 VIC) |
Full Width Blade (2 VIC) |
Half Width Blade (1 VIC) |
Full Width Blade (2 VIC) |
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RHEL 6.2 - 7.7, 8.0, 8.1 (SR-IOV with MacVTap) |
114 vNICs and 2 vHBAs |
223 vNICs with 4 vHBAs |
N/A |
N/A |
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KVM 6.3 —7.7, 8.0, 8.1 (SR-IOV with PCI Passthrough) |
N/A |
N/A |
114 vNICs and 2 vHBAs |
223 vNICs with 4 vHBAs |
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Fibre Channel Environment Configuration Limits
Feature |
Cisco UCS 6200 Series |
Cisco UCS 6332 Series |
Cisco UCS 6324 |
Cisco UCS 6400 Series |
Cisco UCS 6536 |
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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 |
32 |
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Zones |
If you implement Cisco UCS Manager-based zoning, the maximum number of targets per service profile is 64. |
If you implement Cisco UCS Manager-based zoning, the maximum number of targets per service profile is 64. |
If you implement Cisco UCS Manager-based zoning, the maximum number of targets per service profile is 4. |
If you implement Cisco UCS Manager-based zoning, the maximum number of targets per service profile is 64. |
If you implement Cisco UCS Manager-based zoning, the maximum number of targets per service profile is 64. |
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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* |
16 Ports 1/33/1 to 1/36/4 support native FC |
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Virtual Fibre Channel interfaces per fabric interconnect |
320 |
320 |
30 |
320 |
320 |
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Virtual Fibre Channel interfaces per blade |
16 |
16 |
16 |
16 |
16 |
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FC-NVMe initiators per blade |
4 |
4 |
4 |
4 |
4 |
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Flogis per fabric interconnect |
320 |
320 |
255 |
320 |
320 |
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Maximum number of FC SAN port channels |
4 |
4 |
1 |
4 |
4 |
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Maximum port channel members per port channel |
16 |
16 |
4 |
16 |
16 |
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Port channel mode in NPV |
Active |
Active |
N/A |
Active |
Active |
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Port channel mode in FC switching |
On |
On |
On |
On |
On |
VM-FEX Environment Configuration Limits
![]() Note |
**Beginning with Cisco UCS Manager Release 4.1(1), VMware VM-FEX and Hyper-V VM-FEX are no longer supported. VM-FEX is supported only with Linux. |
Cisco UCS 6200 Series | Cisco UCS 6332 Series | Cisco UCS 6400 Series |
Cisco UCS 6536 |
|
---|---|---|---|---|
Port profiles per Cisco UCS domain |
512 |
512 |
N/A |
N/A |
Dynamic ports per port profile |
4096 |
4096 |
N/A |
N/A |
General Network Configuration Limits
Feature | Cisco UCS 6200 Series | Cisco UCS 6332 Series | Cisco UCS 6324 | Cisco UCS 6400 Series | |
---|---|---|---|---|---|
Unicast MAC addresses per fabric interconnect |
20000 entries |
32000 entries |
20000 entries |
96000 entries |
96000 entries |
Multicast MAC addresses per fabric interconnect |
7000 |
7000 |
400 |
7000 |
7000 |
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. |
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 |
8000 MAC addresses secured using the port-security feature. |
8000 MAC addresses secured using the port-security feature. |
Maximum MTU |
9000 |
9000 |
9216 |
9000 |
9000 |
1G ports 1 |
6248—Up to 48 6296—Up to 96 |
6332-16UP—16 6332—First 4 ports |
4—First 4 unified ports |
6454 - 4 (45-48) 64108 - 8 (89-96) |
6536 - 2 unified ports (9 and 10) |
SPAN active sessions per fabric interconnect |
4 |
4 |
2 |
4 |
4 |
Appliance ports per fabric interconnect |
16 |
16 |
2 |
16 |
16 |
General Management Configuration Limits
Feature | Cisco UCS 6200 Series | Cisco UCS 6332 Series | Cisco UCS 6324 | Cisco 6400 Series |
Cisco UCS 6536 |
---|---|---|---|---|---|
Chassis per Cisco UCS domain |
20 |
20 |
2 |
20 |
20 |
Maximum combined number of blade and rack servers per Cisco UCS domain |
160 |
160 |
20 (16 blade servers and 4 rack servers) |
160 |
160 |
Maximum number of Fabric Extenders per Cisco UCS domain
2
|
20 (10 per fabric interconnect) |
20 (10 per fabric interconnect) |
N/A |
20 (10 per fabric interconnect) |
20 (10 per fabric interconnect) |
Local user accounts per Cisco UCS domain |
48 |
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. |
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 |
4 |
Concurrent CLI logins per Cisco UCS Manager |
32 |
32 |
32 |
32 |
32 |
Concurrent GUI logins per Cisco UCS Manager |
256 |
256 |
256 |
256 |
256 |
Number of LDAP groups per Cisco UCS Manager |
160 |
160 |
160 |
160 |
160 |
Number of adapter end points per Cisco UCS Manager |
320 |
320 |
30 |
320 |
320 |
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.