Hi,
We are using Cisco vWSAs in our environment. We have 6 WSAs in 2 different locations with built in failover capabilities. Location 1 serves users in one country of residence and location 2 for the other country of residence. However, in the event location
1 is lost we expect failover using a WPAD file to location 2 and vice versa.
We are currently seeing an issue where users in location 1 are failing over to location 2 when we know there are 6 available proxies for location 1 to select from.
So my question is this:
What exactly causes the machine to ask for another available proxy when browsing the internet?
I can't find any official documentation for this anywhere, i.e. is it due to a slow response time from your current proxy? If the load on that proxy is too heavy does it switch you?
Once we understand this we will hopefully find out what is the cause of this location failover.
**Other notes**
We are using IE 11 as the main browser fully patched.
The WSAs are configured with HA addresses to load balance within an environment, the statement in the wpad.dat file looks something like this:
// DEFAULT RULE: All other traffic, use below proxies, in fail-over order.
if (myseg==Math.floor(myseg/2)*2) {
return "PROXY LOCATION A HA IP 1; PROXY LOCATION A HA IP 2; PROXY LOCATION B HA IP 1; PROXY PROXY LOCATION B HA IP 2";}
So location A HA ip has a cluster of 3 vWSAs and location A HA IP 2 also has the same. So in theory 6 proxies should be attempted before moving location.
Hope this makes sense and that you can help.