On modular switches, such as the BlackDiamond 8800 series or a SummitStack, the port number is a combination of the slot number and the port number.
The nomenclature for the port number is as follows:
slot:port
If an I/O module that has a total of four ports is installed in slot 2 of the chassis, the following ports are valid:
You can also use wildcard combinations (*) to specify multiple modular slot and port combinations. The following wildcard combinations are allowed: