Planet MH-4000 User Manual page 191

Multi-Homing Security Gateway User's Manual
C:\>nslookup
...
> server 61.11.11.11 -----------------> Change to your own DNS Server
Default Server main.planet.com.tw
Address: 61.11.11.11
> www.planet.com.tw -----------> Test if the web server could map to the IP Address accurately. (Forward)
Server: main.planet.com.tw
Address: 61.11.11.11
Name: web.planet.com.tw ------------> The server's alias (www.planet.com.tw) map to the formal domain
name (web.planet.com.tw).
Addresses: 61.11.11.11 ---------------> Test the result is accurate.
Aliases: www.planet.com.tw ---------> The alias of web server ( web.planet.com.tw).
So the DNS Server records the mapping relation with domain name and IP Address.
In the above table, we can learn the conclusion below.
When users query the DNS name of www.planet.com.tw, the sequence of entering the website is as below.
The first user enter the server of 61.11.11.11
The second user enter the server of 211.22.22.22
The third user enter the server of 211.22.22.22
The fourth user enter the server of 61.11.11.11
The fifth user enter the server of 211.22.22.22
The sixth user enter the server of 211.22.22.22
......
MH-4000 would distribute the load sharing to different WAN ports sequentially via round-robin and weight
repeatedly. That's the mechanism of Inbound Load Balance via round-robin and weight for conquering the
over-loading problem of WAN link in most of enterprises.
In the MX Record of the following table, the less number of priority has much higher priority. Suppose there is
a user would like to send an e-mail to support@mail.planet.com.tw, the user may send the mail via
test.com.tw as SMTP Server. And the server (test.com.tw) could decide how the server ( test.com.tw) to send
the mail via DNS Request.
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