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Forum Discussion

JParedesC_24093's avatar
JParedesC_24093
Icon for Nimbostratus rankNimbostratus
Nov 16, 2016

Load Balancing DNS queries with Geolocalization from Cell Phones via APNs

Hello:   We are trying to implement BIG-IP DNS (GTM) on an ISP Customer, and they are now serving the DNS service for the Mobile Phones via APNs, we would like to use geolocalization to load balan...
application delivery
BIG-IP DNS
iRules
Leonardo_Souza's avatar
Leonardo_Souza
Icon for Cirrocumulus rankCirrocumulus
Nov 17, 2016

The GTM will do topology load balancing (geolocation) based in the source ip it receives. Unless there are some crazy requirements, the users connected from one APN are all located in the same area, so the load balance decision should be the same to all users in that area.

 

If this was HTTP proxy, you could add the source IP in the HTTP headers, but as this is DNS and most likely UDP, not easy to do.

 

Have a look in this questions/answers because is more or less the same you are asking:

 

https://devcentral.f5.com/questions/mac-address-field-50132

 

https://devcentral.f5.com/questions/udp-protocol-insert-client-source-ip-49607