Branch local Internet - how is bandwidth controlled?

[timhl]

I've read through the CVD for setting up spoke routers to utilize a branch's local ISP connection for designated local applications, and it seems that this application traffic would not be passing through a tunnel where CBWFQ guarantees percentages of bandwidth to classes of applications.  When local application traffic is directed out the local ISP interface, are tunnels that share that interface aware of how much bandwidth the local apps are consuming?  To the point, is it possible for local application traffic to overwhelm the ISP interface to the point where prioritized tunnel traffic is unknowingly impacted?

Thanks!

[sdipippo · Accepted solution]

Hi Tim,

The CBWFQ that you are referring to is applied to the interface itself, not the tunnel. Therefore it applies to all traffic, including DIA traffic.

"When local application traffic is directed out the local ISP interface, are tunnels that share that interface aware of how much bandwidth the local apps are consuming?"

The tunnels don't need to be aware, only the underlying interface must be aware, which it is.

"To the point, is it possible for local application traffic to overwhelm the ISP interface to the point where prioritized tunnel traffic is unknowingly impacted?"

No, its not possible. QoS is applied to the holistic traffic on the physical interface.

I hope it helps!

Steve