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Fail-over VPN site-to-site
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02-07-2019 03:22 AM - edited 02-07-2019 03:40 AM
Hi,
We have a PA with two VPNs configured. VPN-Main is the active one and if this vpn falls, the traffic must go through the other VPN-backup. The fact is that when the active VPN falls, the route that has the Palo Alto continues going through the previous VPN, it does not refresh the route and adds it through the new tunnel.
This configuration worked when this deployment was done but suddenly stop working.
We have configured a tunnel monitor with destination IP and profile fail-over.
In VPN Main (active):
In VPN (backup):
And this is the route table:
tunnel.29 is the main (active). The metric is 2.
tunnel.27 is the backup. Metric is 5.
Why PA is not deleting the "active" route if the monitor ip is down through the vpn down.
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02-08-2019 07:27 AM
Hello,
In the static route, was the Route monitoring configured? Sorry if I missed it somewhere in the thread?
Regards,
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02-08-2019 11:38 AM - edited 02-08-2019 11:39 AM
Hey @OtakarKlier
I may be completely wrong here, but the way that I thought it worked was that if you had tunnel monitoring configured with action of 'fail-over' the actual failover mechanism works by removing any static routes associated with that tunnel interface from the FIB - effectively making it so you can start using another IPSec tunnel via routes in your RIB.
Reading the documentation - when failover option is selected, tunnel interface is disabled so all routes with that tunnel interface are indeed removed from the FIB. So yes @BigPalo this setup is valid and the traffic would start using the backup tunnel so long as your primary tunnel has tunnel monitoring with failover option set.
Cheers,
Luke.
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02-11-2019 12:14 AM
PanOS is 7.1.x. It this version there is no path monitoring in the static route.
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02-11-2019 12:16 AM
So the version is 7.1.x. We think that its all configured properly but we dont know why its not working
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02-11-2019 01:49 PM
A ticket with support may help find the rason why.
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