Hi, guys
I have a concern. The network books does not tell in detail about how the parent name server communicates with child name server.
Suppose, we have a domain of tomhsiung.com, and this second level domain has its own authoritative DNS server called ns1.tomhsiung.com, so this domain is a separate zone.
Books just say the DNS query is firstly sent to a root DNS server, and the root DNS server replies the name server information of TLD for com. Then a second DNS query is sent to the authoritative DNS server for com, and it replies the name server information of tomhsiung.com. Finally, the last query is sent to the name server authoritative for tomhsiung.com and a IP address mapping is replied.
In this case, there are three DNS zones: the root, the TLD (for com.), and the tomhsiung.com., and I want to understand how the root name server knows the information of the TLD, and how the TLD knows the information of tomhsiung.com,
Tom
I have a concern. The network books does not tell in detail about how the parent name server communicates with child name server.
Suppose, we have a domain of tomhsiung.com, and this second level domain has its own authoritative DNS server called ns1.tomhsiung.com, so this domain is a separate zone.
Books just say the DNS query is firstly sent to a root DNS server, and the root DNS server replies the name server information of TLD for com. Then a second DNS query is sent to the authoritative DNS server for com, and it replies the name server information of tomhsiung.com. Finally, the last query is sent to the name server authoritative for tomhsiung.com and a IP address mapping is replied.
In this case, there are three DNS zones: the root, the TLD (for com.), and the tomhsiung.com., and I want to understand how the root name server knows the information of the TLD, and how the TLD knows the information of tomhsiung.com,
Tom