Cisco 881 Router with 10 Mbps WAN?

[manish.gangal]

Will I face any performance issues if I use a Cisco 881 Router with WAN speeds upto 10 Mbps? I am more interested in knowing the effects on Hardware Resources such as CPU Utilization & Memory Utilization which is the primary concern of my customer. The customer traffic is consistently expected around 8-10 Mbps during business hours which will put lots of strain on the resources however due to limited budgets the 800 is more preferred over 1900.

[Leo Laohoo]

880 is rated to push 25.6 Mbps (single-direction traffic, no encryption).  

Half the value of 25.6 and you'll get a rough estimate of a simultaneous two-way traffic (download and upload) but without any encryption.  

My recommendation is to load the DRAM and Flash to it's maximum. 

[Joseph W. Doherty]

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Posting

The 881 might be overstressed to support up to 10 Mbps (duplex).

Have you've also consider the 890 series?

I've attached a Cisco whitepaper that details ISR performance in different situations.