number of DMVPN spokes

[Adis Cato]

How many spoke devices can connect to the Cisco 2951 router as DMVPN hub? On which parameters in the router data sheet specification I should to pay attention so figured this out?

[Lei Tian]

Hi,

There are some hard limited number like number of ipsec tunnel, encryption throughput for ISR G2, You can find it from

http://www.cisco.com/en/US/prod/collateral/modules/ps2706/ps12202/data_sheet_c78-682436.html

In term of the max number of spokes 2950 can support for DMVPN design, you also need to consider the routing protocol, features that will be enabled, authentication/encryption mode. We have some internal scalability testing document of ISR G2 for DMVPN, please reach out your cisco SE for that information.

HTH,

Lei Tian

[paolo bevilacqua]

Let's put it another way, how many do you need? For example 20 or 200 is no big deal, while 2000 may need some care in design.

[Adis Cato]

Hi,

to be precise, I need a router that can be a hub for 325 dmvpn spoke routers. Any advice?

People from the local Cisco office recommended me ASR1000, but it is a very expensive device.

[Joseph W. Doherty]

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Posting

The number of spokes will have an impact on router load, but how much traffic will be passing across DMVPN  tunnels perhaps even more so.

Cisco recommends a 2951 for up to 500 IPSec tunnels, and 103 Mbps, see Table 7 in attachment.

[Zubair Nawab]

Can any one confirm how many IP sec tunnel support by Cisco 892 router ?

[Spooster IT Services]

Hi Zubair,

890 routers support the maximum of 50 IPSec tunnels with Security license. Maximum IPSec throughput can be 125 Mbps but the maximum speed of WAN circuit supported is 15 Mbps.