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Forum Discussion

escman's avatar
escman
Icon for Cirrus rankCirrus
Aug 18, 2023

Outbound iRule / BGP routing

Hey sirs, I would like to ask a question about the order of precedence/execute of a connection that consumes a forwarding virtual server/routing table. Currently, we have a forwarding any:0 virtual...
application delivery
bgp
cloud
irule
outbound
security
Paulius's avatar
Paulius
Icon for MVP rankMVP
Aug 20, 2023

escman Can you please rephrase what you're asking because I'm not understanding that last sentence.

  • escman's avatar
    escman
    Icon for Cirrus rankCirrus
    Aug 20, 2023

    Hi Paulius,

    My main question is how does a connection is handled by F5 (which triggered first, routing table or vip behavior), assuming that I have a BGP session for route the outbound traffic and also have a forwarding IP VIP with default_gateway_pool and irule.

    Thank you

    • JRahm's avatar
      JRahm
      Icon for Admin rankAdmin
      Aug 21, 2023

      HI escman, the important thing to understand is that the routing table is HOW packets are forwarded on BIG-IP, but that is completely moot if a listener (virtual server) is not configured to allow traffic to flow through the BIG-IP. As far as precedence is concerned with the virtual servers, that information is covered in knowledge article K14800.