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2821 throughput for ISP

sjonessha
Level 1
Level 1

‎11-15-2009 09:46 PM - edited ‎03-04-2019 06:43 AM

I have 2 providers for my customers, 1st is 20 meg and they provide the routing and a 2nd 100 meg link which we provide routing. Currently I have a 3550 w/EMI routing to one provider and a vlan for the other. Will a 2821 w/ max memory give me the full 100 meg and also pass the other 20 meg? We don't use NAT or other services. We will be doing some Qos soon. Thinking of using a 4 HWIC to Vlan the other 20 megs to our 1st provider. We give our customers public static addresses. Thanks.

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Nagendra Kumar Nainar
Cisco Employee
Cisco Employee

‎11-15-2009 10:26 PM

Hi,

Positioning 2821 platform to handle 120 Mbps of traffic is not advisable.

You may be able to reach more than 120 Mbps when you have only IP traffic forwarding (without any services configured). But when you start running features like QoS, throughput will be degraded.

As you are planning to run QoS feature and SVI interface which are highly CPU intensive, I doubt you will be able to reach 120 Mbps throughput.

HTH,

Nagendra