The following list catalogs the Cisco verified limits for Cisco UCS 6100 and 6200 Series fabric interconnects running Cisco UCS Manager, Release 2.0 or higher.

Where limit values differ for 6100 series versus 6200 series fabric interconnects, values are represented in 6100-value/6200-value format.

• Active VLANs per system-- 1,024. 32 VLANs are set aside for VSANs.
• VLAN/VSAN ID space per system-- 4,013 unreserved spaces
• STP Logical Interfaces (also referred to as VLAN Port Count) per fabric interconnect-- 14,000/32,000

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

• VIFs (virtual interfaces) per fabric interconnect that map through VM-FEX to a vNIC or VM itself-- 2000.

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

• IGMP groups per Cisco UCS domain-- 1000
• Uplink port channels per fabric interconnect-- 12
• Member interfaces per port channel-- 8
• Primary VLANs per system-- 30. Private VLANs count towards the total number of VLANs.
• Secondary VLANs per Cisco UCS domain-- 30
• QOS system classes per Cisco UCS domain-- 6 (including the class default)
• Dynamic virtual NICs per VIC for PTS (ESX 4.0)-- 56
• Dynamic virtual NICs per VIC for PTS (ESX 4.1)-- 56
• Dynamic virtual NICs per VIC for PTS (ESX 5.0)-- 116 with no vHBAs. Or, 114 with 2 vHBAs.
• Dynamic virtual NICs per VIC for UPT (ESX 5.0)-- 56 with default config, no vHBAs. Or, 54 with 2 vHBAs.
• Dynamic virtual NICs per VIC for PTS (KVM 6.1)-- 116 with no vHBAs. Or, 114 with 2 vHBAs.
• Static virtual NICs per VIC (Win 2003)-- 10 vNICs and 2 vHBAs
• Static virtual NICs per VIC (Win 2008)-- 20 vNICs and 16 vHBAs (the maximum combination of vNICs and vHBAs is limted to 20)
• Static virtual NICs per VIC (RHEL 5.4)-- 32 vNICs and 16 vHBAs (the maximum combination of vNICs and vHBAs is limted to 32)
• Static virtual NICs per VIC (ESX 4UI)-- 26 vNICs and 16 vHBAs (the maximum combination of vNICs and vHBAs is limted to 26)
• Static virtual NICs per VIC (XenServer 5.6FP1)-- 20 vNICs and 2 vHBAs (the maximum combination of vNICs and vHBAs is limted to 20)
• Static virtual NICs per VIC (XenServer 6.0)-- 32 vNICs and 2 vHBAs (the maximum combination of vNICs and vHBAs is limted to 32)

• VSANs-- 32
• Zones-- Default zoning is disabled on a per VSAN basis. (Zoning is not natively supported on the 6100 and 6200 series fabric interconnects. Zones can be uploaded from MDS or Nexus 5000.)
• Native 4G FC links on the 6100 series-- 8 (6120), 16 (6140).
• Native 8G FC links in the 6100 series-- 6 (6120), 12 (6140).
• Native 4G FC links in the 6200 series-- Up to 48
• Virtual Fibre Channel interfaces per fabric interconnect-- 160
• Virtual Fibre Channel interfaces per blade-- 16
• Flogis per Fibre Channel module-- 256
• Max number of SAN port channels-- 4
• Max port channel members per port channel-- 16
• Port channel mode in NPV-- Active
• Port channel mode in FC switching-- On

• Hosts per DVS-- 52
• DVSs per system-- 1
• vCenters per system-- 1/4
• Port profiles per system-- 512
• Dynamic ports per port profile-- 4096
• Dynamic ports per DVS-- 4096

• Chassis per Cisco UCS domain-- 20
• Unicast MAC addresses per fabric interconnect-- 13,800/20,000 entries.
• Multicast MAC addresses per fabric interconnect-- 6,000/7,000 entries.
• Secured interfaces per Cisco UCS domain-- 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.
• Maximum MTU-- 9000
• 1G ports per 6120-- First 8 fixed ports
• 1G ports per 6140-- First 16 fixed ports
• 1G ports per 6248-- Up to 48
• 1G ports per 6296-- Up to 96
• IP storage appliances per fabric interconnect-- 2
• SPAN active sessions per fabric interconnect-- 2