WAAS and quality of Service (Jacques)

I currently have WAAS deployed in my environment. I would like to introduce you to David in order to avoid the overiding my network sessions. However, my engineer WAAS think that using WAAS would pose a problem.

Question:

At least once a week a user trying to ftp a large file by internet, which eventually cause saturation and performance issues. The internet is through the data center so evacuation qos is used.

Internet - WAAS - router = MPLS = router - WAAS - customer

Since there is no way to set entry in the form. And that would be not entirely help either. I need a session by session in the congestion management solution. So introduce WRED. Who's going to look like that.

Internet---WAAS---Router===MPLS===Router--(wred)---WAAS---Client

On the internal interface LAN's going to regulate the sessions of infiltration to the local network for the State of congestion.

The problem for thought.

Let's say that in a State of congestion THAT DAVID randomly deletes packages for reducing the size of the window of a ftp session through WAAS. How WAAS would meet abandonment random packages? These drops are going to the source of the packets to reduce or WAAS is she as a source? Specialty WAAS's performance, so it is supposed to compensate for the fall of packages. In this scenerio is WAAS the problem?

If you are an expert in WAAS, I welcome your opinion.

Hi Derek,.

As you have known it WAAS technology runs on the TCP proxy feature by masking the real customers of WAN environment. Thus, any packet loss (whether because the WAN congestion or because of DAVID) will be handful of WAAS TFO (using BIC and BAG) and will not gas real customers.

Also optimized thanks to the WAAS TFO feature automatically traffic supports the ECN of DAVID function also.

I hope this information can help

Tags: Cisco DataCenter

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