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BGP peering on loopbacks, struggle is real

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BGP peering on loopbacks, struggle is real

L3 Networker

I am really struggling with this. I have been at it for hours. I have two Palo Altos in standalone mode both forwarding traffic.I have connected to each palo cisco 9500s and Cisco 9300s. These are not fully meshed. So i know that I am going to need RR. 

 

I cannot for the life of me get peering to work on the loopback interfaces of the palos. The session never forms on the Cisco switches. Do I need to create a policy for this traffic to pass? 

 

I am running OSPF between all devices and redistributing connected routes only allowing the the loopbbacks. So on all the switches I see these all the looback addresses. The Palos also see them so I know OSPF is working. Then when i try to peer bgp with loopbacks it never forms. I am using update-source loopback on the Cisco side but i am not sure that exists on the Palo side.

 

I see the loopback in the local rib on the palo but not rib out. so i assume thats why its not working?

2 REPLIES 2

Cyber Elite
Cyber Elite

Hello,

Are the Loopback interfaces in the same zone? If not you will need policies. I say create a new policy as number 1 to allow the traffic and select logging at start and end. The other option would be to do a pcap to see if the packets are getting to the PAN and where they are getting dropped.

 

Regards,

So this was it. Zone to Zone allowing of app BGP was needed. 

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