Routing issue

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Routing issue

Hi,

 

We are expecting a routing problem. Our Pa is learning router from eth1 from OSPF, so the VoIP traffic is going through this interface properly, on the another hand we have a VPN configured in another ISP just in case OSPF goes down. the problem is that OSPF is working fine and suddenly some connections (same source/destination) are going through VPN.

 

10.0.0.0/8 10.3.200.14 220 A S tunnel.4 (VPN BACKUP TUNEL)

10.0.24.0/22 10.3.0.1 10 A O2 19554 ethernet1/1 (MPLS) (MAIN)

 

 

OSPF learn routes have more preference than static rotue to the tunnel.

 

PA version is 7.1.4-h2

 

Captura1.JPG

 

Why PA is routing some connections to the tunnel??????

 

 

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Cyber Elite

Re: Routing issue

Highlighted

Re: Routing issue

I checked this document. Static route has 220 of Administrative distance, so its higher than OSPF.

Highlighted
Cyber Elite

Re: Routing issue

Hello,

If the route is more specific, it doesnt matter what the admin distance is, it will be preferred. I have setup connections similar to the one you have many times and use Policy Based Routing rules with a monitor to force traffic over the 'better' link and fail over automatically.

 

This is an older doc but still holds true.

https://live.paloaltonetworks.com/t5/Configuration-Articles/Dual-ISP-Branch-Office-Configuration/ta-...

 

This one is a bit newer but the config does not require multiple VR's

https://live.paloaltonetworks.com/t5/Configuration-Articles/How-to-Configure-a-Palo-Alto-Networks-Fi...

 

Hope that helps.

Highlighted

Re: Routing issue

Yes i know, route more specifi is over MPLS so this is OK. The behaviour is expected but suddenly traffic is going trough VPN with no reason.

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