Hello All, I attached sipmple BGP lab herewith. iBGP configuration is done On R1, R2 and R3 router and eBGP from R2>R4 and R3>R5. Likewise R10,R11 & R12 iBGP and eBGP from R10>R8 and R11>R9. on every router prefix is advertised. for iBGP full meshed i run RIP on both side. Simple eBGP is configured between R4,R5,R6,R8,R7 & R9. Which carried all prefixes and advertised it's neighbour AS. When R1 advertised it's prefeix to R2, R4, R6, R8, R10 and r12. So Every router is in as per their configured AS's. My questios is that when i am trying to ping 184.108.40.206 prefix from R4 RTR then it is not pinging. I done the sh ip route 220.127.116.11 then it gave the ouput: same is advertised by BGP as 26. In sh ip bgp : prefix is available of each AS Do i need to do any routing OR i need to apply ant BGP ATT for reach-ability of all Prefixes.
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hello All, I have created lab and was doing preparation of BGP lab. Lab Scenario is attached herewith. I just do the simple configuration of BGP, for three router's i used iBGP and other router's are connected via eBGP. I checked and found that every prfixes are advertised in every AS but when i was doing the ping, then prefixes are not reachable. Only from iBGP to eBGP, advertised prefixes were reachable. eg: AS1 prefixes are updated in AS2>AS3>AS4>AS5 AND vice-versa. When i do the sh ip route to any prefixes, then it display, no subnet in Route table. When i do sh ip bgp, i must see that prefixes are advertised in BGP. Please correct me for the same. My question is that Do i need to do routing for other AS to update Prefixes in router's rout table.
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