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Messages - peter

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Configuration / Re: simple udp optimization setup help
« on: April 17, 2015, 07:47:03 AM »
Eventually, I got udp optimization working and my problem was I did not keep peer
 timeout long enough.  Peer was not up when I tried to test.

Thanks very much.

However, I found that peer would be down if I reset service for something else.
 Then, I will have to do a quick ftp to bring them up.  Is it there anyway to keep peer auto up or I missed something.

Thanks again.

Thanks again.

Troubleshooting / Re: Strange delay through wan interface - KVM
« on: March 11, 2015, 03:56:38 AM »
one thing I forgot to mention, I tried wanos on open source XEN as well.  But, the performance was not stable as well. 

Configuration / Re: simple udp optimization setup help
« on: March 11, 2015, 03:43:19 AM »
How do I know whether udp optimization policy entered is effective ?
After I entered above udp policy, I reset the service and pressed submit and even restarted wanos.

I created a txt file which is about 200M size and gzip can get it reduced to 1M size.
Since the file can be compressed very much, it should be a good candidate for udp optimization.

After transferring,
1)  From interface stats, it shows there are 200M coming and going on wan0 and lan0.
2)  Peer status shows nothing.

Obviously, optimization did not happen.

Did I do something wrong ?

Troubleshooting / Re: Strange delay through wan interface - KVM
« on: March 11, 2015, 12:23:55 AM »
     I had similar problem when trying to put wanos on kvm.  The throughput is not stable.  Sometimes it was good and sometimes it was bad.  Initially, I thought I had caught problem regarding the physical NIC and its driver. But, later I found that the "problem nic" worked fine with vmware and it is very stable.  I had no chice but to switch vmware.  But, I still hope wanos would work on KVM because open source matters.

Configuration / Re: simple udp optimization setup help
« on: March 10, 2015, 01:34:12 PM »
     We pick udp because udp is faster than tcp and we can bear some errors.  Our application is very timing sensitive and most of our edge network link is only 4Mbps. We hope wanos will speed up our udp message delivery.  That is also why I tried to simulate slow network in our lab.

Configuration / Re: simple udp optimization setup help
« on: March 10, 2015, 07:40:07 AM »

Yesterday, I did not reset service inside reset page after put policy on both appliances.
However, I still did not optimization on udp today again.  Basically because I did not how to simulate network to low bandwidth like real world.

My lab is  100M network.

Without hooking up wanos appliance:

In order to simulate 4M in real world, I used netem
htb tool.  But once bandwidth is low, udp start getting bad. File received
is corrupted by diff. For example 4Mbytes ppt file corrupted
on 2.5M simulated network but it was good on orginal 100M network.

I understand that file gone bad on udp is expected . but, if file is corrupted, there will be no ground for the further optimization test.

As your test result is impressive, I am wondering if you could help with following question.

1) Which udp transferring program ? Is it public available or privately written by yourself ? (Yesterday I used uftp and today I wrote my very simple udp client and server program for tranferring only  because uftp has tcp-kind  error handling system.  My program is good when both bandwidth is fast enough and file is small enough.

2) What was your test network bandwidth or how to simulate it properly ?
   With what tools ?
3) What are the good format and size for a file to be tested ?

I would like to following your steps to see what is wrong with my lab setup.

Thanks very much again.

Configuration / simple udp optimization setup help
« on: March 09, 2015, 01:51:28 PM »
I am trying to get simple udp optimization working with version 2.0.2. 
Udp test program: uftp which supports both unicast and multicast.  I only need unicast working. 

I had  two sites, sever and client  What i did was put following line policy on both wanos virtual appliances running on vmware workstaion. udp ,please see attached policy screenshot.

I tried to tranfer a ubuntu iso image and udp optimization did not work. 
Tomorrow, I will try txt file tomorrow.
My question:
1.   Is my setting correct or something missing ?
2.   What is the setup and best file type and size for simple udp  (unicast only) optimization working ?


General Discussion / Re: udp multicast igmp
« on: March 05, 2015, 05:23:39 AM »
" Best to test, but if multicast means wanos is going get 239.x destination addresses, then MultiSite is going to be a bit tricky. "

Why?  In this case,  does  not wanos do optimization based on the policy, ( over here is preset source ip and destination ip for udp ) . As long as, my guessing,   wanos sees a udp packet with source ip and destination 239.x, it starts reducing packet at server side and restoring packet at client side because the policy is there already.  Or internal design is some different?  Pls help.

General Discussion / Re: compressing already compressed file
« on: March 05, 2015, 05:06:00 AM »
Thanks very much. 
I understand network traffic will go through compression and deduplication for data minimization.  I am just wondering which one comes first ( compression or dedup ) for final better reduction rate.

Thanks again

General Discussion / compressing already compressed file
« on: March 04, 2015, 05:06:44 AM »
I just read a article about " compressing already compressed file could create a slightly bigger file".  Then, I am just wondering  that how  wanos deals with zipped file ( or already compressed file )  because sending zipped file is not uncommon in this days.


General Discussion / Re: udp multicast igmp
« on: March 03, 2015, 12:55:55 PM »
"UDP needs to be configured very specifically: e.g. source and destination address"

I am confused.  TCP optimization initial connection is done by putting probe ins
ide three-way-handshake.

How does UDP do ? Putting two sites' IP address on policy field on both wanos appliances,  then starting udp transmission ? Or something else ?

Pls help


General Discussion / Re: udp multicast igmp
« on: March 02, 2015, 03:35:28 PM »
"Need to check the MTU of the server to avoid fragmentation"
I do not catch you over here, please explain it a bit more.


Since datastore is only around 13G for free version, generally when will datastore  reach 100% and swapping out happen (after how much data(GB) pass through the wanos appliance).


General Discussion / udp multicast igmp
« on: March 02, 2015, 02:14:06 AM »
Case 1:

We have developed application with udp, multicast and igmp.

Udp server sends a file snapshot every 0.3 second to clients because the content of the file changes constantly.  The file snapshot is complete file, not the difference.


Would  wanos appliance handle above case and give optimization ?

Case 2:
Based on case 1, we are currently (still under developing stage) trying to send compressed complete snapshot in order to save the bandwidth.

Would wanos appliance handle case 2 and give optimization ?



Simple bridge deployment of wanos does not require ip on each wanos appliance.


1) How does datastore on each site get built and synced for deduplication ?
2) How long is datastore time to live or gets refreshed for better tuning


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