TP-Link ER5120 with 2 WAN from 2 different Network

[pydra]

Hello,


i would like to have some help from the community in relation to the configuration of my brand new TP-LINK ER5120 Load Balancer.

My actual configuration is:

First Network and WAN:
- 1 Asus AC66U Wireless Router (IP 192.168.0.1 – 255.255.255.0) –> Connected via ethernet to WAN1 on ER5120)
-- 1 Modem Digicom Combo Cx (connected to WAN port on Asus Router) (IP 192.168.1.1 – 255.255.255.0)


Second Network and WAN:
- 1 Netgear DGN2200 (IP 192.168.3.1 – 255.255.255.0)
-- Netgear WN3000RP (Wirelessly connect to the DGN2200 and via ethernet is connected to WAN2 on ER5120)

TP-LINK ER5120 Lan: (IP 192.168.0.200 – 255.255.255.0)

Actually my first network is not able to get configured on the Load Balancer, i’ve tryed setting the WAN as static ip using this config:

IP: 192.168.0.101
Subnet: 255.255.255.0
Gw: 192.168.0.1

and i always get error:

The subnet of WAN1 conflicts with the others. Please enter another one.

with this configuration instead:

IP: 192.168.1.101
Subnet: 255.255.255.0
Gw: 192.168.1.1


is connecting but not working (no internet connection).

WAN2 is perfectly working with the WN3000RP in dynamic ip setup with this configuration:

IP Address: 192.168.3.8
Subnet Mask: 255.255.255.0
Gateway: 192.168.3.1


All the DHCP are disabled, exept for DGN2200 and Asus AC66U.

So i can’t understand where’s the problem with that.

Does someone have similar experience to share or some suggestion to fix this issue?


Regards in advance!

 

[bill001g]

You can not have the different interfaces in the same subnet. All you do is change the LAN for the ER5120 to something like 192.168.10.200 and it will "work?". You will not get a error

I have no clue what you are trying to accomplish this appears to be setup backwards. In the simplest configuration you would put 2 cable modems one on each Wan port and they would be on different networks. You would then put all your wireless routers and users on the LAN network and the er5120 would load balance the traffic.

 

[pydra]

Thanks for your reply @bill001g

I've tryed changing the LAN port of the er5120 to 192.168.2.1 but now i'm no longer able to access it from my pc (192.168.0.2), i will try with a laptop asap to check the config.

I've made a little graphic to better explain my lan configuration:

http://oi41.tinypic.com/10qyzcp.jpg


Hope this helps.



Many thanks in advance.

Edit:
setting my lan as 192.168.2.2 allowed me to access the er5120, btw i'm no longer able to login to router and modem on 192.168.0.1 and 192.168.1.1. 🙁

 

[pydra]

Ok i did manage to access all my devices: adding in my pc lan config IP 192.168.0.2 and gw 192.168.0.1 allows me to connect all the devices: router, modem and load balancer.

Btw i've tryed a speedtest right now and the speed it's only using 1 connection, but if i open different websites for showing my wan ip i get some showing wan1, some showing wan2, i'll keep looking into this.

 

[bill001g]

I am going to suspect it may be related to how the load balancer part is setup. Can't be sure why 192.168.0.1 does not work but how would the load balancer know that 192.168.1.1 is behind 192.168.0.1. The way this device works by default is it will send the traffic to both connection sorta at random. So it will send 192.168.1.1 to 192.168.0.1 sometime and other times it will send it to 192.168.3.1

 

[pydra]

This was my fault, i did forgot to setup on the asus router the QOS for WAN1 Ip. Now everything is working just marvelous!

Many many thanks @bill001g!! You made my day! 😀