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??????

 

 

4 REPLIES 4

Cyber Elite
Cyber Elite

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

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.

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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