HOW TO CHECK LINK SPEED INTERFACE ON SOLARIS

Do you ever feel slow when transferring files between server or  long running backup process when using LAN. Maybe one reason of that is link speed of the Network Interface Card of your server. How to check link speed of your NIC server in Solaris? You can use this below command

# dladm show-dev
ce0             link: unknown   speed: 1000  Mbps       duplex: full
ce1             link: unknown   speed: 0     Mbps       duplex: unknown
ce2             link: unknown   speed: 1000  Mbps       duplex: full
ce3             link: unknown   speed: 0     Mbps       duplex: unknown
ce4             link: unknown   speed: 1000  Mbps       duplex: full
ce5             link: unknown   speed: 1000  Mbps       duplex: full