I have been asked to recommend a router or firewall for two locations.
At the main office there is currently adsl link. There is an avaya ip pbx. Another internet link with static address will be added. (the adsl should be used as backup link)
At a different location there is also another avaya ip pbx.
The requirment is is theat a vpn will be created between the sites and through this vpn there will mainly be voip traffic. QoS has to be implemented to prioritize the voip traffic (in the tunnel and also to prioritize the vpn traffic over let's say http traffic on the internet).
So I'm not sure wether to recommend ASA5510 for the main site or some Router that will have security IOS (2811 for instance)?
Also for the remote location is cisco 861 security bundle enough? Does it support QoS?
It's hard to say which is best with only limited information. Both will work, but I would lean towards a router. What model depends on many other things. Use the datasheets for guidance on how big of a router to get (if you go that way). All ISR routers support QoS.
ASA's can priority queueing and do VPN of course.The ASA also has more security features also (botnet filtering, potential malware modules etc), so depending how strict security requirements you will have you might need or not need an ASA.
Traffic load and potential routing protocol capabilities and needs will tell you if the ASA can do what you want. As Collin suggested, the routers can probably do it, it is a matter of traffic load. I don't think you will forget to factor in price either.
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