# GSLB Link **URL:** \ **Category:** ADC - Application Delivery\ **Tags:** gslb\ **Created:** [November 6, 2014, 7:38pm UTC](https://community.a10networks.com/t/gslb-link/305 "2014-11-06T19:38:19Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![across\_tcfbank.com](https://avatars.discourse-cdn.com/v4/letter/a/67e7ee/32.png) [@across\_tcfbank.com](https://community.a10networks.com/u/across_tcfbank.com)\ **Post date:** [November 6, 2014, 7:38pm UTC](https://community.a10networks.com/t/gslb-link/305/1 "2014-11-06T19:38:19Z")
I have an HA pair of AX3030’s at data center 1, and another pair at data center 2. We are looking to establish a GSLB link between the 2 pairs. Do I need to have a layer 2 connection for the GSLB pair? ---
**Author:** ![tmitsuhata](https://avatars.discourse-cdn.com/v4/letter/t/3bc359/32.png) [@tmitsuhata](https://community.a10networks.com/u/tmitsuhata)\ **Post date:** [November 11, 2014, 3:04am UTC](https://community.a10networks.com/t/gslb-link/305/2 "2014-11-11T03:04:57Z")
Hi, The GSLB communication between controller and site device basically uses GSLB protocol (port 4149 over TCP/UDP). Therefore, you don’t need to have a L2 connection between the sites. Thanks ---
**Author:** ![wanni](https://avatars.discourse-cdn.com/v4/letter/w/ee59a6/32.png) [@wanni](https://community.a10networks.com/u/wanni)\ **Post date:** [January 8, 2015, 6:54pm UTC](https://community.a10networks.com/t/gslb-link/305/3 "2015-01-08T18:54:10Z")
Hello, Can anyone please post sample configuration of the gslb both data center, I need to do the load balancing between iis servers and DB servers ? Regards, Rohith ---
**Author:** ![bruno.silva](https://avatars.discourse-cdn.com/v4/letter/b/8e8cbc/32.png) [@bruno.silva](https://community.a10networks.com/u/bruno.silva)\ **Post date:** [January 28, 2015, 6:24pm UTC](https://community.a10networks.com/t/gslb-link/305/4 "2015-01-28T18:24:18Z")
Hello All, I would GSLB configuration examples. Best Regards, Bruno