Identifying Network Ports

OK, so I have a real dumb question, but I am desperate for an answer.
If my Sun machine shows the following out put.

root@xxxx:/# egrep network /etc/path_to_inst
"/pci@1f,0/pci@1,1/network@c,1" 0 "eri"
"/pci@1f,0/pci@1,1/network@5,1" 1 "eri"

Does that indicate that there is one eri interface card with two ports (eri0 and eri1), or does that mean there are 2 interfaces cards each with one port?

Please reply.

They are both in the same PCI slot, i.e.:
pci@1,1

This is an easy one. You have 2 interfaces , Sun servers , most of them come with 2 interfaces .

bryan