6 Replies Latest reply: Dec 11, 2017 12:25 AM by Sergey RSS

    IBGP

    Nazmus

      ibgp.png

      If i am not wrong both PE1 and PE2 can be ibgp peers and we simply need to run an igp like ospf,isis or eigrp to ensure PE1 and PE2 can reach each other. There is no need for P1 and P2 to run ibgp session. As I know bgp uses TCP sessions. So for PE routers, there TCP TTL value should be 1 since they are simply just 1 hop away. My question is how PE1 & PE2 send packets despite they have TTL value 1 and they have multiple hops/routers in their path ? Sorry for my bad English.