ASA with two internet connections

Hello

I want to connect an ASA with two ISPS for internet traffic, one for the VPN S2S, there is a router VPN dedicatet on the second link.

In case of failure of the first link, the second must be enabled.

route outside 0.0.0.0 0.0.0.0 10.20.20.1 1 track 1route backup 0.0.0.0 0.0.0.0 10.20.30.1 254
route backup 192.168.0.0 255.255.0.0 10.20.30.1

Is this configuration working??

Hello

You need to configure the 'als' monitor configuration to monitor some destination on the main IP address ISP for the ASA whether the connection works. Probably an IP address on the public network.

SLA 1 monitor

type echo protocol ipIcmpEcho outside interface

NUM-packages

timeout

frequency

SLA monitor Appendix 1 point of life to always start-time now

You will also need a configuration related to 'track' of the order

track 1 rtr 1 accessibility

Route outside 0.0.0.0 0.0.0.0 10.20.20.1 track 1

Backup route 0.0.0.0 0.0.0.0 10.20.30.1 254

The above combined with the routes you mention should be enough about the delivery. Naturally for each remote VPN L2L network you will always need a specific static route on the SAA to the backup ISP device.

Also you must naturally maintain the translations on the SAA. Seems that your ISP links have in mind a separate device that contains public IP addresses. So am I right in assuming you pass all traffic from the LAN links for links to PSI via the ASA without any type of NAT, and leave these routers from the private to the public NAT?

-Jouni

Tags: Cisco Security

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