What is maximuam site to site connection cisco router 2821

LopezLas11 · ‎03-11-2014

Hi, i want to setup multiple site to site connection, between my headoffice and remote offices.
on HeadOffice, i've cisco router 2821, with IOS model:
c2800nm-adventerprisek9-mz.124-20.T.bin

There is no extra hardware module on this router, and i want to know the number>
What i've found on internet, is that is support up to 10 Cisco VPN Clients, but i've already tested it with 14 simultanious users, so i'm in doubt.
let me know

Emmanuel Valdez · ‎03-11-2014

Hi,

Nowadays I have a customer with a Cisco 2821 for Internet connectivity and VPN Service with 200 VPN clients with factory RAM and Flash memory, if you check documentation this router can support up to 1500 VPN tunnels with AIM-EPII-Plus Module.

http://www.cisco.com/c/en/us/products/routers/2821-integrated-services-router-isr/index.html

You can use the CIsco 2821 with Easy VPN Server on Headquarters and Branch router with Easy VPN Remote.

I recommend you upgrade the IOS version to c2800nm-adventerprisek9-mz.124-20.T.bin

If it was useful please rate.

Regards.

Sanjay Shaw · ‎03-16-2014

Hi Lopez,

Please find the below Tunnel count and the below url to find the maximum tunnel supported VPN without any extra module i.e., embedded VPN feature.

http://www.cisco.com/c/en/us/products/collateral/routers/2800-series-integrated-services-routers-isr/prod_qas0900aecd80169bd6.html

IPSec Performance and Tunnel Count by Platform


Platform	IMIX Traffic Mbps	1400 Byte Mbps	Maximum Number of Tunnels
Cisco 2801 with embedded VPN	14 Mbps	50 Mbps	150
Cisco 2801 with AIM-VPN/EPII-PLUS	30 Mbps	100 Mbps	1500
Cisco 2811 with embedded VPN	20 Mbps	55 Mbps	200
Cisco 2811 with AIM-VPN/EPII-PLUS	35 Mbps	130 Mbps	1500
*Cisco 2821 with embedded VPN*	*36 Mbps*	*56 Mbps*	*250*
Cisco 2821 with AIM-VPN/EPII-PLUS	70 Mbps	140 Mbps	1500
Cisco 2851 with embedded VPN	53 Mbps	66 Mbps	300
Cisco 2851 with AIM-VPN/EPII-PLUS	100 Mbps	145 Mbps	1500

Please Note: The Maximum Tunnel Scalability test is done with no data passing over the tunnels to only determine maximum number. So again it depends upon the factor that untill there is no problem with Bandwidth, CPU and Memory.

BR// Sanjay

Leo Laohoo · ‎03-11-2014

The main important question is this: What is the bandwidth of your WAN?