You can enter either an IP address or a link name. If specifying a link name should follow these requirements:
If the first digit is numeric, the entire name cannot be hexadecimal
If specifying a link's IP address, it must be in dotted decimal notation, in which a 32-bit internet address is represented as four decimal numbers, one for each 8 bits, separated by dots (periods). Each of the four decimal numbers is greater than or equal to 0 and less than or equal to 255. For example:
00001010 00000001 10110100 11111110 a 32-bit address
10
1
180
254
dotted decimal notation (10.1.180.254)