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IPSec VPN IOS HA to Fortigate 400A

mariocabrejo
Level 1
Level 1

‎10-11-2007 05:33 AM - edited ‎02-21-2020 03:19 PM

I am running several VPNs from my HA router with different appliances. We have issues with this Fortigate 400A, tunnel, but traffic passes only sporadically (tunnel never drops). For example sometimes icmp responds through the tunnel and sometimes it just times out. Need to know any know issue that could prevent traffic from crossing the tunnel.

Thanks

flash:c2800nm-advsecurityk9-mz.124-3g.bin

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tstanik
Level 5
Level 5

‎10-17-2007 08:54 AM

The problem will be due to mismatch IKE keepalives. By default IKE keepalive's on cisco devices is 86400 seconds. Check the keepalive's at the Fortigate and configure it accordingly. Following links may help you

http://www.cisco.com/en/US/products/hw/vpndevc/ps2030/products_configuration_example09186a0080094498.shtml

http://www.cisco.com/en/US/products/hw/vpndevc/ps2030/products_configuration_example09186a0080094761.shtml

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