hi guys i have to following topology
now i have added loop back addreses on R1 and advertised it thorugh network command under bgp and both IBGP peers can con ping that loop back
also i added lookpback on R4 AS 3
this one will be reachable by Ebgp
now the issue is
i can see all loopback on show ip bgp
thats mean its advertised corectly
R2 has next-hop-self ro R1 to solve the next hope issue
but when i ping between ASs i cant ping the advertsed loopbacks unless i advertise the networks between the deffrent ASs
for example if i want tp ping from R3 to R1 loopback address i need to advertise the IBGP link network address to R3 thourgh bgp to let it ping i think the return traffic need it !!
also if i wanna ping from R1 to R4 AS Loopback address i need to advertise the netwrok between R3 and R4
in other words i need to advertise the networks between ASs ( not directly connected) to get the ping work
by the way R2 peer with R3
R3 peer with R4
no direct peering between R2 and R4
is it normal to advertise those network between routers to get it ping ???
for IBGP no sync done
and it is directly connected no IGP \
but they ping but beyond thats i have the network advertisment need !!!