Virtualization Scalability
SUP2 engine supports four VDC (a default vdc + 3 th no-default vdc) or (1 admin vdc + 4 th no-default vdc)
SUP2E engine supports 8 VDC (a default vdc + 7 th no-default VDC) or (1 admin vdc + 8 th no-default vdc)
- Each supports up to 4096 vdc vlan
- Each supports up to 4096 vdc vrf
- It supports up to 768 port-channel on one physical device
- Only support two physical devices on a SPAN
default vdc
VDC fully functional, with all the functions include both management traffic, but also to carry traffic.
VDC resource sharing
In the default vdc vdc or resources under the admin settings are global share
is only in force in the vdc vlan and other information in the other vdc
Storge VDC
Mainly used to run the FCoE traffic.
- Separation of traffic from the LAN and SAN
- Storage or support of FCoE host connectivity
- FCoE ISLs between the support and the other switches (N7K, N5K, MDS)
- Each physical device supports only one storge vdc
Line Card — port group
The concept exists port group on the line card, a port group belong to the same port must be divided into a vdc with Different line cards, the number of port group is not the same.
Big Box Nexus VDC the above mentioned id = "communication between VDC-">Communication between VDC
You can communicate only through a physical connection.
Resource Template
The figure is assigned by default when you create a VDC resource template
VDC hardware utilization
Vdc MAC address forwarding engine on a specific line card, the card only contains the associated on-line entries 
Similarly, the three-tier exchange is the same. FIB table and ACL TCAM table 
is generally used vdc several ports, and only then a few lines assigned to go to the port on the card vdc
theoretically port on a line card, all assigned to a vdc use is optimized
VDC configuration
Direct use vdc
Use show vdc membership can view the current port assignment
Boot sequence
When the device is restarted, default vdc or admin vdc is first enabled. Other non-default vdc boot sequence. Affect the start of the default boot order parameters are 1, the smaller the priority, when the boot order is the same, in order start up.