# ptf host interface @ switch front port name
0@Ethernet0
1@Ethernet4
2@Ethernet8
3@Ethernet12
4@Ethernet16
5@Ethernet20
6@Ethernet24
7@Ethernet28
8@Ethernet32
9@Ethernet36
10@Ethernet40
11@Ethernet44
12@Ethernet48
13@Ethernet52
14@Ethernet56
15@Ethernet60
16@Ethernet64
17@Ethernet68
18@Ethernet72
19@Ethernet76
20@Ethernet80
21@Ethernet84
22@Ethernet88
23@Ethernet92
24@Ethernet96
25@Ethernet100
26@Ethernet104
27@Ethernet108
28@Ethernet112
29@Ethernet116
30@Ethernet120
31@Ethernet124