I assumed this is how it worked but never tried any captures to figure it out. However, the reason I queried this theory was due to my observations in B3. This function doesn’t seem to be working as well as it did in B2. If I use one cellular card on its own (with the setting off) things tend to be much smoother than if I use two and enable these settings. There is freezing in Citrix sessions and breakups in VoIP calls.
This was not the case in B2, if I enabled “Single” I would see a major positive change. “Double” was also a noticeable change. Obviously, all of this is a perceived observation and based on a network with no guarantee so take it as you will.
The other observation that I have is that the throughput just drops through the floor. Correct me if I’m wrong but if we’re mirroring traffic then theoretically we should be able to get speed equal to one card minus some overhead?
The results of transferring a file over the VPN with SMB:
- One Cellular modem no latency reduction = 12mbps (bottleneck being the remote end expected)
- Two cellular modems with no latency reduction = 12mbps (bottleneck being the remote end as expected)
- Two cellular modems with “Normal” latency reduction = 2mbps
I have a spare HD2 device and a HD4 device with active LTE services not in production for the rest of this week if anyone is interested in taking a look. The test units are in fixed locations with good reception.
Also, would you be able to tell me what happens if this setting is on and there is only one connection, is the packet transmitted more than once on the one connection or is it overridden? In the case there is only one active connection on one end and two on the other does it work asymmetrically?