HOWTO troubleshoot loadbalancing issues
From PFSenseDocs
This article is part of the HOWTO series.
|
Contents |
Summary
This is a collection of things that have been seen on the forums on problems with Multi-Wan / Load balancing setups.
Basic testing of a load balancing setup
You've set it up, and it looks like its working, but is it really happening?
Check that both connections are available. First check that both (all) your WAN connections are marked as available.
If you have a problem here go XXXXXX
As long as none of them are red all is well.
Squid doesn't seem to be using both connections
You are right, at this stage (1.0.1 plus February 2007 updates), Squid (and most other packages) don't understand load balancing, and will just use the WAN connection.
Ground up testing
This set of progressive tests assumes that your pfSense box is running OK and you can access it from another system on the local network (LAN) with a web browser.
pfSense can see the modem / routers
With the pfSense web interface, use Diagnostics - Ping and check that pfSense can ping each (all) of your router / modems. Note that you must select the right interface for the IP address of each modem / router or or will fail.
If you have set up load balancing following the MultiWan/Load-Balancing page, then the IP addresses will be 192.168.0.254 and 192.168.2.254.
If this does not work then you have a basic network or setup problem to resolve. Check your mopdem / router setup, and the cabling between them and the pfSense system.
Can a system on the LAN see the modem / routers
Now try to ping each of your modem routers from another system that is connected to the pfSense LAN network.
If this is the same system that you are accessing the web interface from, then the connection between the system and pfSense is OK.
Is pfSense set as the default gateway on your test system? If not then correct the configuration (or change the pfSense DHCP setup if you are using pfSense for DHCP - the gateway field in the Services - DHCP server settings should be blank).
Is the last rule in your Firewall - Rules the Balance rule?
Are all the ISP connections being used?
Use a search engine (Google) to search for "what is my ip" CLick on several of the resulting sites. You should get results showing that your ip address is each of your WAN ip addresses. If you are the only person using the pfSense firewall, everytime you reload one of the "what is my ip" pages you should get a different ip address
