We have a customer with bandwidth it's about 100 Mbps. We are using WXC 590 for this link and get the WAN throughput 60 Mbps, If we not using the compression from the device the throughput can reach 100 Mbps. Is there any solution to get compression 45 Mbps and the passthrough 50 Mbps. Thanks
The only way is to start dividing what applications are getting optimized and not. Typically you might see that just a few applications gets really good improvements through the WAN Acceleration device, keep these in there, but pass-through the the rest that are not really being optimized. The applications being passed-through without optimization will be able to use whatever bandwidth is available.
Another option is to use two WXC590/3400 in each end which will provide you with 90 Mbps of compressed throughput.
This sounds to me like a really corner case for WAN Acceleration. With 8 mS of RTT a single TCP flow should be able to get around 60 Mbps of throughput if you are using 64KB TCP Window Size. So the only way we can, with a 45 Mbps box, get to more then 60 Mbps throughput for a single TCP flow is to add good compression. Not sure what type of data you are running and what levels of compression you are getting, but a WXC590/3400 should be able to reach 150-160 Mbps LAN-to-LAN throughput with good compression.
As you say you can fill the 100 Mbps WAN link when the WXC's are not there I assume you are running multiple sessions across the WAN.
So to sum it up:
With good compression you might see a 50% improvment in LAN-to-LAN throughput (150 Mbps vs. 100 Mbps). Would this be good enough for the customer?
Also with bad/no compression you might end up with only 45 Mbps throughput. NOTE!! If you select traffic to be optimized it can not burst beyond the compression tunnel capasity (license) on the WAN side.
The application is actually from AS400 - AS400 for replication data. Because the AS400 traffic didn't get as expected, we tried at a convenience time and did data transfer using CIFS. It's true that the throughput shown at WXC was only 60Mbps, with no passthru. The reduction result was still far from 45Mbps license (we use 30 days trial license)
The CIFS is using two units PC at one end and two units PC at the other end to create a full 160Mbps traffic, with only 5ms reply, using clear channel. Both Local and Remote ports are Gigabit Ethernet, and inline.
We disabled the compression tunnel to see what happen, and the passthrough traffic went up to full 160Mbps as expected. We enabled back the compression, and the traffic went down back to 60Mbps.
We also changed the WXC590 unit at both sides, changed MSR modes, and had the same result.
So, we would like to have a confirmation that one unit WXC590 is capable of processing 160Mbps traffic.