A simple bgp question

[ilovebgp4]

Hi!Guys,I am a newbie in BGP area,I have a doubt about IGP/IBGP Synchronization and want your help.

Does it means if the below conditions satisfied the bgp router will always advertise the bgp route to ebgp peers?even if there is no "network" or "redistribue" command to declare it.

conditions:

1.the router's bgp table has the bgp route.

2.the router's igp route table has the route,that means the router learns the bgp route through igp(border bgp router redistribute all bgp route into igp).

Thanks for your help!

[Harold Ritter]

Absolutely correct. BTW, this requirement is an issue when RRs are used since the OSPF RID and the BGP RID don't match. But frankly, who is doing RR and synchronization these days ;o)

[ilovebgp4]

hi!I have done the lab and confirm it is the ospf router-id different with iBGP router-id that cause the telluride can not synchronized.

Thanks everybody for your great help!