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DDOS and Priority or custom queuing

We have had a problem with DDOS attacks. I have one subnet that I absolutely cannot afford to have taken down. Is it possible to set up queuing on my serial interface, such that traffic for that subnet will be serviced even if the traffic bombing my interface, seeking another network is in access of my WAN bandwidth?

Sinking in packets over here. Any suggestion would be appreciated.

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Re: DDOS and Priority or custom queuing

As far as my knowledge goes, you cannot queue on serial interface in this way.

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