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Configuration Limits
The following tables list the Cisco verified limits for Cisco UCS 6100 and 6200 series fabric interconnects running Cisco UCS Manager release 2.2(x).
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 6100 Series Cisco UCS 6200 Series Active VLANs per Cisco UCS domain
982
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.
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.
VLAN/VSAN ID space per Cisco UCS domain
4013 unreserved space
4013 unreserved space
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.
14000
64000 (with VLAN Port Count Optimization enabled)
Important:There is a soft limit of 12k for the VLAN Port Count per ASIC. If you go over the limit, it can overload the dleft table, which has a soft limit of 12k.
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, Hyper-V and KVM - 2000
VMware VM-FEX - 2750
Hyper-V and KVM 2000
IGMP groups per Cisco UCS domain
1000
4000
Uplink port channels per fabric interconnect
12
12
Maximum number of uplinks per fabric interconnect (including up to12 port channels)
31
31
Member interfaces per port channel
8
16
Interfaces per FCoE port channel
8
16
Primary VLANs per Cisco UCS domain
Note Private VLANs count towards the total number of VLANs.
30
50
Secondary VLANs per Cisco UCS domain
30
1000
Maximum secondary VLANs per primary VLANs.
30
30
QOS system classes per Cisco UCS domain
6 (including the class default)
6 (including the class default)
VIC Environment Configuration Limits
Static Virtual NICs per Host
Cisco UCS 6100 Series and Cisco UCS 6200 Series 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
Red Hat Enterprise Linux 5.9 - 6.5 64bit
32
16
24 Enics and 8 Fnics
ESX 5.0 U2—ESX 5.5
26
16
18 Enics and 8 Fnics
XenServer 6.1 – 6.2
32
16
24 Enics and 8 Fnics
OL 6.4 64bit with UEK 2.6.39-400 Update 5
18
6
18 Enics and 6 Fnics
OL 6.4 64bit with UEK 3.8.13-16
18
6
18 Enics and 6 Fnics
SUSE Linux Enterprise Server 11.2 64bit
32
16
24 Enics and 8 Fnics
SUSE Linux Enterprise Server 11.3 64bit
32
16
24 Enics and 8 Fnics
Ubuntu 12.04.2
32
N/A
32 Enics
Dynamic Virtual NIC
Cisco UCS 6100 Series and Cisco UCS 6200 Series 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
Window 2012 (SR-IOV)
114 vNICs and 2 vHBAs
223 vNICs with 4 vHBAs
114 vNICs and 2 vHBAs
223 vNICs with 4 vHBAs
KVM 6.1—6.5 (SR-IOV)
114 vNICs and 2 vHBAs
223 vNICs with 4 vHBAs
114 vNICs and 2 vHBAs
223 vNICs with 4 vHBAs
Fibre Channel Environment Configuration Limits
Feature Cisco UCS 6100 Series Cisco UCS 6200 Series VSANs
32
Note This is the combined total of 982 VLANs and VSANs that can be configured on each fabric interconnect. Of that total, no more than 32 can be VSANs.
32
Note A combined total of 2000 VLANs and VSANs can be configured on each fabric interconnect.
Zones
Note If you implement Cisco UCS Manager-based zoning, the maximum number of targets per service profile is 64.
Note If you implement Cisco UCS Manager-based zoning, the maximum number of targets per service profile is 64.
Native FC links
Native 4G links:
Native 8G links:
6248—Up to 48
6296—Up to 96
Virtual Fibre Channel interfaces per fabric interconnect
160
240
Virtual Fibre Channel interfaces per blade
For more information, see VIC Environment Configuration Limits.
16
16
Flogis per fabric interconnect
256
256
Maximum number of SAN port channels
4
4
Maximum port channel members per port channel
8
16
Port channel mode in NPV
Active
Active
Port channel mode in FC switching
On
On
VM-FEX Environment Configuration Limits
Cisco UCS 6100 Series Cisco UCS 6200 Series Hypervisor Manager DVS /Logical Switches Hypervisor Manager DVS /Logical Switches ESX/ESXi
1 vCenter per Cisco UCS domain
1 DVS per vCenter
4 vCenter per Cisco UCS domain
8 DVS per vCenter
Hyper-V
N/A
N/A
4 SCVMM hosts per Cisco UCS domain
8 logical switches per SCVMM
KVM
N/A
1 DVS per Cisco UCS domain
N/A
1 DVS per Cisco UCS domain
Port profiles per Cisco UCS domain
512
512
Dynamic ports per port profile
4096
4096
Dynamic ports per DVS
4096
4096
SCVMM Support Matrix
Note
SCVMM support is added in Cisco UCS 6200 Series. When you configure scale environment, make sure to configure retention timer value as 30 minutes.
General Network Configuration Limits
Feature Cisco UCS 6100 Series Cisco UCS 6200 Series Unicast MAC addresses per fabric interconnect
13800 entries
20000 entries
Multicast MAC addresses per fabric interconnect
6000
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.
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.
Maximum MTU
9000
9000
1G ports
6120—First 8 fixed ports
6140—First 16 fixed ports
6248—Up to 48
6296—Up to 96
SPAN active sessions per fabric interconnect
2
4
Appliance ports per fabric interconnect
2
Cisco UCS Manager Release 2.2.3 and previous: 2
Cisco UCS Manager Release 2.2.4 and onwards: 4
General Management Configuration Limits
Feature Cisco UCS 6100 Series Cisco UCS 6200 Series Chassis per Cisco UCS domain
20
20
Maximum combined number of blade and rack servers per Cisco UCS domain
160
160
Maximum number of 2232PP Fabric Extenders per Cisco UCS domain
20 (10 per fabric interconnect)
20 (10 per fabric interconnect)
Local user accounts per Cisco UCS domain
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.
Active KVM sessions per individual CIMC
4
4
Concurrent CLI logins per Cisco UCS Manager
32
32
Concurrent GUI logins per Cisco UCS Manager
256
256
Number of LDAP groups per Cisco UCS Manager
28
28
Number of adapter end points per Cisco UCS Manager
160
Cisco UCS Manager Release 2.2.3 and previous: 240
Cisco UCS Manager Release 2.2.4 and onwards: 320
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