Quality of Service Device for Uplink 1

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[alokratha]

Hi,

I have three Ethernet cards on my Endian box. Eth0(green), Eth1(Main Uplink) and Eth2(Uplink1). In Network->Interfaces->Current Uplinks it is showing MAIN and UPLINK1. When I try to create Quality of Service Device under target device it is showing Uplink main, GREEN, Interface 1, Interface 2(GREEN), Interface 3 and VPN IPSEC. If I want to create a QOS device for uplink 1 than which interface should I choose(Interface 3)? Is it possible to create multiple QOS devices using single target device?

Thanks,
Alok