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Dear Group,
I have a confusion regarding usage of no-advertise and no-export communities. I know that no-advertise means NOT TO ADVERTISE to any bgp peer ( iBGP & eBGP ) whereas no-export says NOT TO ADVERTISE to any eBGP peer means don’t advertise outside this AS. Consider the following topology,
R1(AS 10) ——–R2(AS 10)————R3(AS 30)
Let say AS 10 is advertising a prefix to AS 30 and requirement is that AS 30 should not forward this prefix further to any other AS. Now we have option to use either no-advertise or no-export on R2 towards R3. Both will give the desired result , what should be the recommended approach here ??
HTH
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