Cisco 2851 vs 2951

[Boris Krajnc]

Can anybody suggest how to find major performance difference between this two routers ? I have small network with 150 users (NAT, DHCP,  few access lists, 2/2MB traffic per user, 40MB peak traffic, static routes  ....nothing special)  and Cisco 2851 works with max 80% CPU utilization. Regarding to the customer will increase teh number of users to around 700 I would like to know if Cisco 2951 will be enough?

Thank you for any advice or suggestion.

Boris

[paolo bevilacqua]

There is a big performance difference and you search the forum you will find many threads and documents.

You can also consider a 2921 or 2911.

[Joseph W. Doherty · Accepted solution]

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Posting

If your routing is only to/from your WAN link, you really only need to size the router to deal with the WAN link (as this normally is the principal bottleneck).

If your routing is also within the LAN (i.e. between LAN subnets), then you might want to consider also using a L3 switch.

PS:

The 2851 is rated at 220 Kpps, the 2951 is rated at 579 Kpps.

I've attached a Cisco whitepaper for latest ISR performance.

[Boris Krajnc]

First of all Happy new year and thank you for your explanations. There is no special routing between subnets in LAN. I think 2951 should be good decission.