The options for eg*_mode value are:
auto
Auto negotiate
10mbps
10 Mb half duplex
10mbps_full_duplex
10 Mb full duplex
100mbps
100 Mb half duplex
100mbps_full_duplex
100 Mb full duplex
1000mbps
1000 Mb half duplex
1000mbps_full_duplex
1000 Mb full duplex
5-54 DS25 Owner’s Guide
