VMware NSX Edge is a virtual datacentre solution that provides routing, firewall, NAT, DHCP, site-to-site VPN, SSL VPN-Plus, load balancing, high availability, syslog. Physically implemented as a virtual machine connected to the virtual datacentre networks and to external networks (Internet).
EDGE Virtual Machine Features:
| 
 Edge (Compact)  | 
 Edge (Large)  | 
 Edge (Quad-Large)  | 
 Edge (X-Large)  | 
|
| 
 vCPU  | 
 1  | 
 2  | 
 4  | 
 6  | 
| 
 Memory  | 
 512 MB  | 
 1 GB  | 
 1 GB  | 
 8 GB  | 
| 
 Disk  | 
 512 MB  | 
 512 MB  | 
 512 MB  | 
 4.5 GB  | 
         Tested configuration limits:
| 
 Limit  | 
 Edge  | 
| 
 Number of interfaces  | 
 10  | 
| 
 Number of firewall rules  | 
 2,000  | 
| 
 Number of NAT rules  | 
 2,000  | 
| 
 Number of DHCP pools  | 
 25  | 
| 
 Number of static routes  | 
 2048  | 
| 
 Number of load balancer pools  | 
 64  | 
| 
 Number of load balancer virtual servers  | 
 64  | 
| 
 Number of members per load balancer pool  | 
 32  | 
| 
 Concurrent IPSec VPN Tunnels  | 
 512(compact), 1600(Large), 4096(Quad-Large), 6000(X-Large)  | 
| 
 Concurrent SSL VPN Tunnels  | 
 50(compact), 100(Large), 100(Quad-Large), 1000(X-Large)  | 
         Comparison of Firewall performance:
| 
 Edge (Compact)  | 
 Edge (Large)  | 
|
| 
 Firewall Performance (Gbps)  | 
 3  | 
 9.7  | 
| 
 Concurrent Sessions  | 
 64,000  | 
 1,000,000  | 
| 
 New sessions/second  | 
 8,000  | 
 50,000  | 
         VMware recommends using Edge type Large for balancing:
| 
 Edge (Large)  | 
 Edge (Quad-Large)  | 
 Edge(X-Large)  | 
|
| 
 Load balancer throughput – L7 Proxy Mode (Gbps)  | 
 2.2  | 
 2.2  | 
 3  | 
| 
 Load balancer connections / sec – L7 Proxy Mode  | 
 46,000  | 
 50,000  | 
 50,000  | 
| 
 Load balancer concurrent connections – L7 Proxy Mode  | 
 8,000  | 
 60,000  | 
 60,000  | 
Performance was measured in firewall accept mode.