Cisco 1941 & Cisco 3945 Configuration

You can perform Cisco 1941 & Cisco 3945 configuration using the following steps:

ip flow-export destination <NFA Server IP> 9996
ip flow-export source {any l3 interface} //loopback interface of the device
ip flow-export version 5
ip flow-cache timeout active 1
ip flow-cache timeout inactive 15

Enable "ip flow ingress" command on all the layer 3 interfaces.

Huawei 6810

Under System-view: 

sflow collector 1 ip 192.168.2.246 port 9996 description netserver
 sflow agent ip 192.168.60.1 

Under each interface : 

For example: 

system-view 
Interface GE0/0/1 
sflow counter-sampling collector 1
sflow counter-sampling interval 30
sflow flow-sampling collector 1 
sflow flow-sampling rate 1024