Laddered Concurrent Connect and round-robin DNS

Connectivity
Teradata Employee

Laddered Concurrent Connect and round-robin DNS

My customer is claiming that LCC and round-robin DNS will still cause potential balancing/availability issues. They state that although Windows XP will randomly choose a DNS entry, Vista and Windows 7 will always connect to the nearest host (by IP address) so you do not get a consistent load balance situation. They also claim this will cause an issue if the node that is continually connected to is down.

From what I understand about LCC it will always make connections to multiple IP addresses?

Ian Pemberton

Teradata UK
1 REPLY
Teradata Employee

Re: Laddered Concurrent Connect and round-robin DNS


If DNS returns multiple IP-addresses(based on its defined round-robin scheme), the sequence of IP-addresses will be honored. i.e., LCC attempts the first connection on the first IP-address in the list returned by DNS and so on.