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New Member

Dynamic Site to Site VPN

Hi,

I will have almost more than 150 site to site tunnel to be configured on ASA 5540. is it possible to have a single tunnel group for all these site to site tunnel. like remote access vpn. peer ip address will be dynamic.

2 REPLIES
Bronze

Re: Dynamic Site to Site VPN

Refer to Configuring IPSec Between Two PIXes With VPN Client 4.x Access in order to configure Site-to-Site VPN client connection on the same PIX.

http://www.cisco.com/en/US/products/hw/vpndevc/ps2030/products_configuration_example09186a00800948b8.shtml

On completion, the crypto-map configuration ideally looks like this example:

crypto map VpnTunnel 10 match address 100

crypto map VpnTunnel 10 set peer 70.70.70.70

!-- This is the LAN-to-LAN tunnel with Lower sequence number, high priority.

crypto map VpnTunnel 10 set transform-set lan2lan

crypto map VpnTunnel 20 ipsec-isakmp dynamic dyn1

!-- This is the dynamic map with higher sequence number, lower priority.

crypto map VpnTunnel interface OutSide

New Member

Re: Dynamic Site to Site VPN

To get this to work on the ASA you need to set the pre-shared key on the L2L base group which does not require a peer address. This behavior resembles what you would have had to do on a VPN concentrator.

To see the base group:

show run all

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