Domain Names
IP addresses are 32 bit numbers
- Part of every packet, designed for easy routing
People prefer to use names for things
- Need to covert “domain names” to numbers
Each name server knows one level of names
- WAM’s name server knows rac1, rac2, …
- UMD’s name server knows wam, glue, ttclass, …
- .edu name server knows umd, umbc, stanford, …
- “Top level” name server knows .edu, .com, .mil, …