Cisco router resource reservation

[Ricky Sandhu]

Hi all,  is there a way to reserve CPU cycles on a Cisco router for management/control operations?  We run into issues time and again where a smaller ISR (1941 etc.) would get overwhelmed with a sudden influx of IPSec traffic over the VPN tunnels due to a large file transfer that it drops all neighborships and other functions.  I already have the following command in my configuration but I don't think this would apply to CPU?

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memory reserve critical 2000

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What I am hoping to achieve is that a certain amount of CPU remains reserved for management functions such as keeping the crypto funcationality UP.

[Joseph W. Doherty]

See what "scheduler" configuration commands are available in your IOS version.

[Georg Pauwen]

Hello,

post the running configuration of your 1941, so we can see what you have configured and if some sort of fine tuning can be applied.

If the CPU spikes are caused by high (IPSec) traffic, your best bet is to implement some sort of QoS traffic shaping...