I have a question regarding QoS and WAAS. From documentation I've ascertained that QoS needs to be done on the routers.
Configuring a service policy on the output interface can be used to guarantee bandwidth for certain applications. However, the amount guaranteed would be applied to the compressed output from the WAE.
Is there a way to guarantee bandwidth for the uncompressed amount of traffic? For example, I want to guarantee 256KBps for SQL - the reduction achieved on the WAE will be variable, and I want to be able to guarantee the bandwidth for the unoptimized traffic.
One option is to apply a service-policy outbound on the interface facing your WAEs. Your service-policy criteria would need to take traffic direction into consideration, since traffic going towards the WAEs can ultimately be destined for the LAN or the WAN (you want towards the WAN).
Thanks for the reply. If we apply a service policy to the interface facing the WAE (for WAN traffic), won't we have to choose an arbitrary amount to which to shape the traffic, since the LAN interface will have much higher bandwidth than the WAN? If there is no queueing taking place, QoS will not function. However, the problem is that the data reduction is variable, making choosing the shape value difficult.
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