# Load balancing problem **URL:** \ **Category:** ADC - Application Delivery\ **Created:** [December 5, 2013, 3:39pm UTC](https://community.a10networks.com/t/load-balancing-problem/241 "2013-12-05T15:39:47Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![Ahemd\_Star](https://avatars.discourse-cdn.com/v4/letter/a/f19dbf/32.png) [@Ahemd\_Star](https://community.a10networks.com/u/Ahemd_Star)\ **Post date:** [December 5, 2013, 3:39pm UTC](https://community.a10networks.com/t/load-balancing-problem/241/1 "2013-12-05T15:39:47Z")
i’m facing a problem with AX1030 as it only redirect the traffic to only one server and not redirect any traffic for the other server. Top logy: 2\*AX1030 connected to two servers in routed mode ---
**Author:** ![system](https://us1.discourse-cdn.com/flex002/uploads/a10_community/original/1X/bb9f186d33804d3044a0374e589f49fdf3be1328.png) [@system](https://community.a10networks.com/u/system)\ **Post date:** [December 5, 2013, 4:36pm UTC](https://community.a10networks.com/t/load-balancing-problem/241/2 "2013-12-05T16:36:08Z")
Can you share your running config of the virtual server, virtual service, service group? Also, in the statistics for the service group, is there any activity from the AX to the server? The more information/details you share with us the better. Regard! ---
**Author:** ![Ahemd\_Star](https://avatars.discourse-cdn.com/v4/letter/a/f19dbf/32.png) [@Ahemd\_Star](https://community.a10networks.com/u/Ahemd_Star)\ **Post date:** [December 5, 2013, 5:43pm UTC](https://community.a10networks.com/t/load-balancing-problem/241/3 "2013-12-05T17:43:21Z")
Dear luisvin, Kindly check the attached configuration. ---
**Author:** ![system](https://us1.discourse-cdn.com/flex002/uploads/a10_community/original/1X/bb9f186d33804d3044a0374e589f49fdf3be1328.png) [@system](https://community.a10networks.com/u/system)\ **Post date:** [December 5, 2013, 6:40pm UTC](https://community.a10networks.com/t/load-balancing-problem/241/4 "2013-12-05T18:40:34Z")
Hi Ahemd, thanks for sharing the config. Can you tell me which service group is the one with the problem? Or is it with the same server in different service groups and in that case which server is that? It may sound obvious but, is the server being marked up by the health monitor? ---
**Author:** ![Ahemd\_Star](https://avatars.discourse-cdn.com/v4/letter/a/f19dbf/32.png) [@Ahemd\_Star](https://community.a10networks.com/u/Ahemd_Star)\ **Post date:** [December 5, 2013, 7:10pm UTC](https://community.a10networks.com/t/load-balancing-problem/241/5 "2013-12-05T19:10:13Z")
all traffic redirected to the same server 172.25.23.1 with all its service groups. Health monitor is OK ---
**Author:** ![system](https://us1.discourse-cdn.com/flex002/uploads/a10_community/original/1X/bb9f186d33804d3044a0374e589f49fdf3be1328.png) [@system](https://community.a10networks.com/u/system)\ **Post date:** [December 5, 2013, 10:12pm UTC](https://community.a10networks.com/t/load-balancing-problem/241/6 "2013-12-05T22:12:32Z")
Ahemd, After reviewing your configuration I honestly don’t see any obvious configuration setting that could be causing the behavior you are seeing. I would recommend you the following if you can make changes to the config without impacting the environment: - Change the algorithm to simple round-robin - Remove any persistence profile With this, you will rule out that the behavior is caused by any of this config settings and will help to start narrowing down the possible cause. Regards! ---
**Author:** ![Ahemd\_Star](https://avatars.discourse-cdn.com/v4/letter/a/f19dbf/32.png) [@Ahemd\_Star](https://community.a10networks.com/u/Ahemd_Star)\ **Post date:** [December 5, 2013, 10:43pm UTC](https://community.a10networks.com/t/load-balancing-problem/241/7 "2013-12-05T22:43:33Z")
the algorithms that i uses is the recommended in exchange server services also the persist is required for some services , any way i will remove them and see what is the affect. thanks ---
**Author:** ![daniel.neubacher\_xing.com](https://avatars.discourse-cdn.com/v4/letter/d/58956e/32.png) [@daniel.neubacher\_xing.com](https://community.a10networks.com/u/daniel.neubacher_xing.com)\ **Post date:** [December 9, 2013, 10:59am UTC](https://community.a10networks.com/t/load-balancing-problem/241/8 "2013-12-09T10:59:42Z")
In case you are still searching for a problem. I’ve had some trouble with the a10 implementation of persistence because the ax takes persistence very seriously. While ip persistence was active it ignored http app switching completely. I know that this isn’t your problem BUT I don’t know what else is ignored when persistence is on. The config doesn’t look wrong so more information is needed anyway. For example “show slb service-group Exchange-OWA-https” would give you more detailed information whats going on. ---
**Author:** ![Ahemd\_Star](https://avatars.discourse-cdn.com/v4/letter/a/f19dbf/32.png) [@Ahemd\_Star](https://community.a10networks.com/u/Ahemd_Star)\ **Post date:** [December 9, 2013, 11:59am UTC](https://community.a10networks.com/t/load-balancing-problem/241/9 "2013-12-09T11:59:13Z")
Yes i still facing the problem but it different now. when i disabled the persist template every thing work fine but i can not work when i disabled persist as it cause problem with exchange server as you now So i enabled it again and the strange thing is that every thing work fine!!! but i w ant to ask you what do you mean with : ```auto 1-ax takes persistence very seriously. 2-While ip persistence was active it ignored http app switching completely. ``` ---
**Author:** ![troyp](https://avatars.discourse-cdn.com/v4/letter/t/3bc359/32.png) [@troyp](https://community.a10networks.com/u/troyp)\ **Post date:** [December 9, 2013, 12:10pm UTC](https://community.a10networks.com/t/load-balancing-problem/241/10 "2013-12-09T12:10:06Z")
Ahemd, From our SLB Guide: By default, if URL / host switching is configured along with source IP persistence, the URL / host switching settings are not used. Instead, the default service group is always selected. To enable URL / host switching to be used along with source IP persistence, you must use the match-type servicegroup option in the source IP persistence template.